From 055c199f4333a7e4cefd4ea8663ee2e0cd0b680f Mon Sep 17 00:00:00 2001 From: Arjan Date: Sat, 25 Jul 2026 12:02:05 +0530 Subject: [PATCH 1/9] feat: setup `/math/base/special/expf` package --- type: pre_commit_static_analysis_report description: Results of running static analysis checks when committing changes. report: - task: lint_filenames status: passed - task: lint_editorconfig status: passed - task: lint_markdown_pkg_readmes status: na - task: lint_markdown_docs status: na - task: lint_markdown status: na - task: lint_package_json status: passed - task: lint_repl_help status: na - task: lint_javascript_src status: passed - task: lint_javascript_cli status: na - task: lint_javascript_examples status: na - task: lint_javascript_tests status: na - task: lint_javascript_benchmarks status: na - task: lint_python status: na - task: lint_r status: na - task: lint_c_src status: na - task: lint_c_examples status: na - task: lint_c_benchmarks status: na - task: lint_c_tests_fixtures status: na - task: lint_shell status: na - task: lint_typescript_declarations status: passed - task: lint_typescript_tests status: na - task: lint_license_headers status: passed --- --- .../math/base/special/expf/lib/main.js | 107 ++++++++++++++ .../math/base/special/expf/lib/polyval_p.js | 57 ++++++++ .../math/base/special/expf/package.json | 136 ++++++++++++++++++ 3 files changed, 300 insertions(+) create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/lib/main.js create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/lib/polyval_p.js create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/package.json diff --git a/lib/node_modules/@stdlib/math/base/special/expf/lib/main.js b/lib/node_modules/@stdlib/math/base/special/expf/lib/main.js new file mode 100644 index 000000000000..55d11270904d --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/lib/main.js @@ -0,0 +1,107 @@ +/** +* @license Apache-2.0 +* +* Copyright (c) 2025 The Stdlib Authors. +* +* Licensed under the Apache License, Version 2.0 (the "License"); +* you may not use this file except in compliance with the License. +* You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +* +* +* ## Notice +* +* The following copyright, license, and long comment were part of the original implementation available as part of [FreeBSD]{@link https://svnweb.freebsd.org/base/release/12.2.0/lib/msun/src/s_sinf.c}. The implementation follows the original, but has been modified for JavaScript. +* +* ```text +* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. +* +* Developed at SunPro, a Sun Microsystems, Inc. business. +* Permission to use, copy, modify, and distribute this +* software is freely granted, provided that this notice +* is preserved. +* ``` +*/ + +'use strict'; + +// MODULES // + +var float64ToFloat32 = require( '@stdlib/number/float64/base/to-float32' ); +var floorf = require( '@stdlib/math/base/special/floorf' ); +var ldexpf = require( '@stdlib/math/base/special/ldexpf' ); +var FLOAT32_MAX = require( '@stdlib/constants/float32/max' ); +var FLOAT32_MAX_LN = require( '@stdlib/constants/float32/max-ln' ); +var FLOAT32_MIN_LN = require( '@stdlib/constants/float32/min-ln' ); +var FLOAT32_LOG2E = require( '@stdlib/constants/float32/log2-e' ); +var polyvalP = require( './polyval_p.js' ); + + +// VARIABLES // + +var LN2_HI = 0.693359375; +var LN2_LO = -2.12194440e-4; + + +// MAIN // + +/** +* Evaluates the natural exponential function of single-precision floating-point numbers. +* +* @param {number} x - input value +* @returns {number} function value +* +* @example +* var v = expf( 4.0 ); +* // returns ~54.59815 +* +* @example +* var v = expf( -9.0 ); +* // returns ~1.234098e-4 +* +* @example +* var v = expf( 0.0 ); +* // returns 1.0 +* +* @example +* var v = expf( NaN ); +* // returns NaN +*/ +function expf( x ) { + var z; + var n; + var p; + var y; + if ( x > FLOAT32_MAX_LN ) { + return FLOAT32_MAX; + } + if ( x < FLOAT32_MIN_LN ) { + return 0.0; + } + + // e^x = e^(nln2 + g) = e^(nln2) * e^g = 2^n * e^g. + z = floorf( ( float64ToFloat32( FLOAT32_LOG2E * float64ToFloat32( x ) ) + 0.5 ) ); + + x -= float64ToFloat32( z * LN2_HI ); + x -= float64ToFloat32( z * LN2_LO ); + x = float64ToFloat32( x ); + n = z; + + z = float64ToFloat32( x * x ); + p = polyvalP( x ); + y = float64ToFloat32(p * z) + x + 1.0; + + return ldexpf( y, n ); +} + + +// EXPORTS // + +module.exports = expf; diff --git a/lib/node_modules/@stdlib/math/base/special/expf/lib/polyval_p.js b/lib/node_modules/@stdlib/math/base/special/expf/lib/polyval_p.js new file mode 100644 index 000000000000..912d6018c4f4 --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/lib/polyval_p.js @@ -0,0 +1,57 @@ +/** +* @license Apache-2.0 +* +* Copyright (c) 2026 The Stdlib Authors. +* +* Licensed under the Apache License, Version 2.0 (the "License"); +* you may not use this file except in compliance with the License. +* You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +*/ + +'use strict'; + +// MODULES // + +var float64ToFloat32 = require( '@stdlib/number/float64/base/to-float32' ); + + +// MAIN // + +/** +* Evaluates the polynomial P(x) in exp(x) ≈ 1 + x + x²P(x) for |x| ≤ ln(2)/2. +* +* ## Notes +* +* - The implementation uses [Horner's rule][horners-method] for efficient computation. +* +* [horners-method]: https://en.wikipedia.org/wiki/Horner%27s_method +* +* @private +* @param {number} x - value at which to evaluate the polynomial +* @returns {number} evaluated polynomial +*/ +function polyvalP( x ) { + var p; + + p = float64ToFloat32( 1.9875691500e-4 ); + p = float64ToFloat32( (p * x) + 1.3981999507e-3 ); + p = float64ToFloat32( (p * x) + 8.3334519073e-3 ); + p = float64ToFloat32( (p * x) + 4.1665795894e-2 ); + p = float64ToFloat32( (p * x) + 1.6666665459e-1 ); + p = float64ToFloat32( (p * x) + 5.0000001201e-1 ); + + return p; +} + + +// EXPORTS // + +module.exports = polyvalP; diff --git a/lib/node_modules/@stdlib/math/base/special/expf/package.json b/lib/node_modules/@stdlib/math/base/special/expf/package.json new file mode 100644 index 000000000000..2f66609a1424 --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/package.json @@ -0,0 +1,136 @@ +{ + "name": "@stdlib/math/base/special/expf", + "version": "0.0.0", + "description": "Natural exponential function for single-precision floating point numbers.", + "license": "Apache-2.0", + "author": { + "name": "The Stdlib Authors", + "url": "https://github.com/stdlib-js/stdlib/graphs/contributors" + }, + "contributors": [ + { + "name": "The Stdlib Authors", + "url": "https://github.com/stdlib-js/stdlib/graphs/contributors" + } + ], + "main": "./lib", + "directories": { + "lib": "./lib" + }, + "scripts": {}, + "homepage": "https://github.com/stdlib-js/stdlib", + "repository": { + "type": "git", + "url": "git://github.com/stdlib-js/stdlib.git" + }, + "bugs": { + "url": "https://github.com/stdlib-js/stdlib/issues" + }, + "dependencies": {}, + "devDependencies": {}, + "engines": { + "node": ">=0.10.0", + "npm": ">2.7.0" + }, + "os": [ + "aix", + "darwin", + "freebsd", + "linux", + "macos", + "openbsd", + "sunos", + "win32", + "windows" + ], + "keywords": [ + "stdlib", + "stdmath", + "mathematics", + "math", + "special", + "function", + "math.exp", + "exp", + "natural", + "exponential", + "euler", + "power", + "number" + ], + "__stdlib__": { + "scaffold": { + "$schema": "math/base@v1.0", + "base_alias": "expf", + "alias": "expf", + "pkg_desc": "evaluate the natural exponential function of a single-precision floating point number", + "desc": "evaluates the natural exponential function of a single-precision floating point number", + "short_desc": "natural exponential function", + "parameters": [ + { + "name": "x", + "desc": "input value", + "type": { + "javascript": "number", + "jsdoc": "number", + "c": "float", + "dtype": "float32" + }, + "domain": [ + { + "min": "-infinity", + "max": "infinity" + } + ], + "rand": { + "prng": "random/base/uniform", + "parameters": [ + -10, + 10 + ] + }, + "example_values": [ + -1.2, + 2, + -3.1, + -4.7, + 5.5, + 6.7, + 8.9, + -10.2, + 11.3, + -12.4, + 13.5, + 14.6, + -15.7, + 16.8, + -17.9, + 18.1, + -19.11, + 20.12, + -21.15, + 23.78 + ] + } + ], + "returns": { + "desc": "function value", + "type": { + "javascript": "number", + "jsdoc": "number", + "c": "float", + "dtype": "float32" + } + }, + "keywords": [ + "natural", + "exponential", + "exp", + "power" + ], + "extra_keywords": [ + "math.exp" + ] + } + } +} From 97787a738582bd93a3cec39a58db15655da63321 Mon Sep 17 00:00:00 2001 From: Arjan Date: Sat, 25 Jul 2026 21:51:26 +0530 Subject: [PATCH 2/9] docs: add docs/types --- type: pre_commit_static_analysis_report description: Results of running static analysis checks when committing changes. report: - task: lint_filenames status: passed - task: lint_editorconfig status: passed - task: lint_markdown_pkg_readmes status: na - task: lint_markdown_docs status: na - task: lint_markdown status: na - task: lint_package_json status: passed - task: lint_repl_help status: na - task: lint_javascript_src status: na - task: lint_javascript_cli status: na - task: lint_javascript_examples status: na - task: lint_javascript_tests status: na - task: lint_javascript_benchmarks status: na - task: lint_python status: na - task: lint_r status: na - task: lint_c_src status: na - task: lint_c_examples status: na - task: lint_c_benchmarks status: na - task: lint_c_tests_fixtures status: na - task: lint_shell status: na - task: lint_typescript_declarations status: passed - task: lint_typescript_tests status: passed - task: lint_license_headers status: passed --- --- .../base/special/expf/docs/types/index.d.ts | 48 +++++++++++++++++++ .../math/base/special/expf/docs/types/test.ts | 44 +++++++++++++++++ .../math/base/special/expf/package.json | 4 +- 3 files changed, 95 insertions(+), 1 deletion(-) create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/docs/types/index.d.ts create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/docs/types/test.ts diff --git a/lib/node_modules/@stdlib/math/base/special/expf/docs/types/index.d.ts b/lib/node_modules/@stdlib/math/base/special/expf/docs/types/index.d.ts new file mode 100644 index 000000000000..d0e589a4237f --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/docs/types/index.d.ts @@ -0,0 +1,48 @@ +/* +* @license Apache-2.0 +* +* Copyright (c) 2019 The Stdlib Authors. +* +* Licensed under the Apache License, Version 2.0 (the "License"); +* you may not use this file except in compliance with the License. +* You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +*/ + +// TypeScript Version: 4.1 + +/** +* Evaluates the natural exponential function of single-precision floating-point number. +* +* @param x - input value +* @returns function value +* +* @example +* var v = expf( 4.0 ); +* // returns ~54.598 +* +* @example +* var v = expf( -9.0 ); +* // returns ~1.234e-4 +* +* @example +* var v = expf( 0.0 ); +* // returns 1.0 +* +* @example +* var v = expf( NaN ); +* // returns NaN +*/ +declare function expf( x: number ): number; + + +// EXPORTS // + +export = expf; diff --git a/lib/node_modules/@stdlib/math/base/special/expf/docs/types/test.ts b/lib/node_modules/@stdlib/math/base/special/expf/docs/types/test.ts new file mode 100644 index 000000000000..e2ff29750af1 --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/docs/types/test.ts @@ -0,0 +1,44 @@ +/* +* @license Apache-2.0 +* +* Copyright (c) 2019 The Stdlib Authors. +* +* Licensed under the Apache License, Version 2.0 (the "License"); +* you may not use this file except in compliance with the License. +* You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +*/ + +import expf = require( './index' ); + + +// TESTS // + +// The function returns a number... +{ + expf( 0.5 ); // $ExpectType number +} + +// The compiler throws an error if the function is provided a value other than a number... +{ + expf( true ); // $ExpectError + expf( false ); // $ExpectError + expf( null ); // $ExpectError + expf( undefined ); // $ExpectError + expf( '5' ); // $ExpectError + expf( [] ); // $ExpectError + expf( {} ); // $ExpectError + expf( ( x: number ): number => x ); // $ExpectError +} + +// The compiler throws an error if the function is provided insufficient arguments... +{ + expf(); // $ExpectError +} diff --git a/lib/node_modules/@stdlib/math/base/special/expf/package.json b/lib/node_modules/@stdlib/math/base/special/expf/package.json index 2f66609a1424..b687517d6156 100644 --- a/lib/node_modules/@stdlib/math/base/special/expf/package.json +++ b/lib/node_modules/@stdlib/math/base/special/expf/package.json @@ -15,7 +15,9 @@ ], "main": "./lib", "directories": { - "lib": "./lib" + "lib": "./lib", + "doc": "./docs", + "test": "./test" }, "scripts": {}, "homepage": "https://github.com/stdlib-js/stdlib", From 74d168ca433403e5ed1ec2a27808055a46eb5dfc Mon Sep 17 00:00:00 2001 From: Arjan Date: Sat, 25 Jul 2026 21:54:52 +0530 Subject: [PATCH 3/9] feat: setup tests --- type: pre_commit_static_analysis_report description: Results of running static analysis checks when committing changes. report: - task: lint_filenames status: passed - task: lint_editorconfig status: passed - task: lint_markdown_pkg_readmes status: na - task: lint_markdown_docs status: na - task: lint_markdown status: na - task: lint_package_json status: na - task: lint_repl_help status: na - task: lint_javascript_src status: passed - task: lint_javascript_cli status: na - task: lint_javascript_examples status: na - task: lint_javascript_tests status: passed - task: lint_javascript_benchmarks status: na - task: lint_python status: na - task: lint_r status: na - task: lint_c_src status: na - task: lint_c_examples status: na - task: lint_c_benchmarks status: na - task: lint_c_tests_fixtures status: na - task: lint_shell status: na - task: lint_typescript_declarations status: passed - task: lint_typescript_tests status: na - task: lint_license_headers status: passed --- --- .../math/base/special/expf/lib/index.js | 49 ++++++ .../special/expf/test/fixtures/julia/REQUIRE | 2 + .../test/fixtures/julia/medium_negative.json | 1 + .../test/fixtures/julia/medium_positive.json | 1 + .../expf/test/fixtures/julia/runner.jl | 82 +++++++++ .../test/fixtures/julia/small_negative.json | 1 + .../test/fixtures/julia/small_positive.json | 1 + .../expf/test/fixtures/julia/tiny.json | 1 + .../math/base/special/expf/test/test.js | 155 ++++++++++++++++++ 9 files changed, 293 insertions(+) create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/lib/index.js create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/REQUIRE create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/medium_negative.json create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/medium_positive.json create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/runner.jl create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/small_negative.json create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/small_positive.json create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/tiny.json create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/test/test.js diff --git a/lib/node_modules/@stdlib/math/base/special/expf/lib/index.js b/lib/node_modules/@stdlib/math/base/special/expf/lib/index.js new file mode 100644 index 000000000000..2b971e138938 --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/lib/index.js @@ -0,0 +1,49 @@ +/** +* @license Apache-2.0 +* +* Copyright (c) 2018 The Stdlib Authors. +* +* Licensed under the Apache License, Version 2.0 (the "License"); +* you may not use this file except in compliance with the License. +* You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +*/ + +'use strict'; + +/** +* Evaluate the natural exponential function of single-precision floating-point numbers. +* +* @module @stdlib/math/base/special/expf +* +* @example +* var expf = require( '@stdlib/math/base/special/expf' ); +* +* var v = expf( 4.0 ); +* // returns ~54.598 +* +* v = expf( -9.0 ); +* // returns ~1.234e-4 +* +* v = expf( 0.0 ); +* // returns 1.0 +* +* v = expf( NaN ); +* // returns NaN +*/ + +// MODULES // + +var main = require( './main.js' ); + + +// EXPORTS // + +module.exports = main; diff --git a/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/REQUIRE b/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/REQUIRE new file mode 100644 index 000000000000..308c3be89c85 --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/REQUIRE @@ -0,0 +1,2 @@ +julia 1.5 +JSON 0.21 diff --git a/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/medium_negative.json b/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/medium_negative.json new file mode 100644 index 000000000000..ac5e053c4660 --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/medium_negative.json @@ -0,0 +1 @@ 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diff --git a/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/medium_positive.json b/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/medium_positive.json new file mode 100644 index 000000000000..b2c17c8d7558 --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/medium_positive.json @@ -0,0 +1 @@ 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diff --git a/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/runner.jl b/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/runner.jl new file mode 100644 index 000000000000..b36ffe3af346 --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/runner.jl @@ -0,0 +1,82 @@ +#!/usr/bin/env julia +# +# @license Apache-2.0 +# +# Copyright (c) 2018 The Stdlib Authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +import JSON + +""" + gen( domain, filepath ) + +Generate fixture data and write to file. + +# Arguments + +* `domain`: domain +* `filepath::AbstractString`: filepath of the output file + +# Examples + +``` julia +julia> x = range( -100, stop = 100, length = 2001 ); +julia> gen( x, \"./data.json\" ); +``` +""" +function gen( domain, name ) + x = collect( domain ); + y = exp.( x ); + + # Store data to be written to file as a collection: + data = Dict([ + ("x", x), + ("expected", y) + ]); + + # Based on the script directory, create an output filepath: + filepath = joinpath( dir, name ); + + # Write the data to the output filepath as JSON: + outfile = open( filepath, "w" ); + write( outfile, JSON.json(data) ); + write( outfile, "\n" ); + close( outfile ); +end + +# Get the filename: +file = @__FILE__; + +# Extract the directory in which this file resides: +dir = dirname( file ); + +# Medium negative values: +x = Float32.( range( -87.336f0, stop = -1.0f0, length = 1000 ) ); +gen( x, "./medium_negative.json" ); + +# Medium positive values: +x = Float32.( range( 1.0f0, stop = 88.0f0, length = 1000 ) ); +gen( x, "./medium_positive.json" ); + +# Small negative values: +x = Float32.( range(-1.0f0, stop=-2.0f0^-25, length=1000) ); +gen( x, "./small_negative.json" ); + +# Small positive values: +x = Float32.( range(2.0f0^-25, stop=1.0f0, length=1000) ); +gen( x, "./small_positive.json" ); + +# Tiny values: +x = Float32.( range(-2.0f0^-20, stop=2.0f0^-20, length=1000) ); +gen( x, "./tiny.json" ); diff --git a/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/small_negative.json b/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/small_negative.json new file mode 100644 index 000000000000..0ed0a7747d47 --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/small_negative.json @@ -0,0 +1 @@ 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diff --git a/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/small_positive.json b/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/small_positive.json new file mode 100644 index 000000000000..5307adbc57a1 --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/small_positive.json @@ -0,0 +1 @@ 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diff --git a/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/tiny.json b/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/tiny.json new file mode 100644 index 000000000000..d3cd18751f6e --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/test/fixtures/julia/tiny.json @@ -0,0 +1 @@ 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diff --git a/lib/node_modules/@stdlib/math/base/special/expf/test/test.js b/lib/node_modules/@stdlib/math/base/special/expf/test/test.js new file mode 100644 index 000000000000..24e40c428901 --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/test/test.js @@ -0,0 +1,155 @@ +/** +* @license Apache-2.0 +* +* Copyright (c) 2018 The Stdlib Authors. +* +* Licensed under the Apache License, Version 2.0 (the "License"); +* you may not use this file except in compliance with the License. +* You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +*/ + +'use strict'; + +// MODULES // + +var tape = require( 'tape' ); +var abs = require( '@stdlib/math/base/special/abs' ); +var f32 = require( '@stdlib/number/float64/base/to-float32' ); +var EPS = require( '@stdlib/constants/float32/eps' ); +var expf = require( './../lib' ); + + +// FIXTURES // + +var mediumNegative = require( './fixtures/julia/medium_negative.json' ); +var mediumPositive = require( './fixtures/julia/medium_positive.json' ); +var smallNegative = require( './fixtures/julia/small_negative.json' ); +var smallPositive = require( './fixtures/julia/small_positive.json' ); +var tiny = require( './fixtures/julia/tiny.json' ); + + +// TESTS // + +tape( 'main export is a function', function test( t ) { + t.ok( true, __filename ); + t.strictEqual( typeof expf, 'function', 'main export is a function' ); + t.end(); +}); + +tape( 'the function accurately computes the natural exponential function for negative medium numbers', function test( t ) { + var expected; + var delta; + var tol; + var x; + var v; + var i; + + x = mediumNegative.x; + expected = mediumNegative.expected; + + for ( i = 0; i < x.length; i++ ) { + x[ i ] = f32( x[ i ] ); + expected[ i ] = f32( expected[ i ] ); + v = expf( x[ i ] ); + delta = abs( v - expected[ i ] ); + tol = EPS * abs( expected[ i ] ); + t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + } + t.end(); +}); + +tape( 'the function accurately computes the natural exponential function for positive medium numbers', function test( t ) { + var expected; + var delta; + var tol; + var x; + var v; + var i; + + x = mediumPositive.x; + expected = mediumPositive.expected; + + for ( i = 0; i < x.length; i++ ) { + x[ i ] = f32( x[ i ] ); + expected[ i ] = f32( expected[ i ] ); + v = expf( x[ i ] ); + delta = abs( v - expected[ i ] ); + tol = EPS * abs( expected[ i ] ); + t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + } + t.end(); +}); + +tape( 'the function accurately computes the natural exponential function for negative small numbers', function test( t ) { + var expected; + var delta; + var tol; + var x; + var v; + var i; + + x = smallNegative.x; + expected = smallNegative.expected; + + for ( i = 0; i < x.length; i++ ) { + x[ i ] = f32( x[ i ] ); + expected[ i ] = f32( expected[ i ] ); + v = expf( x[ i ] ); + delta = abs( v - expected[ i ] ); + tol = EPS * abs( expected[ i ] ); + t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + } + t.end(); +}); + +tape( 'the function accurately computes the natural exponential function for positive small numbers', function test( t ) { + var expected; + var delta; + var tol; + var x; + var v; + var i; + + x = smallPositive.x; + expected = smallPositive.expected; + + for ( i = 0; i < x.length; i++ ) { + x[ i ] = f32( x[ i ] ); + expected[ i ] = f32( expected[ i ] ); + v = expf( x[ i ] ); + delta = abs( v - expected[ i ] ); + tol = EPS * abs( expected[ i ] ); + t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + } + t.end(); +}); + +tape( 'the function accurately computes the natural exponential function for very small `x`', function test( t ) { + var expected; + var delta; + var tol; + var x; + var v; + var i; + + x = tiny.x; + expected = tiny.expected; + + for ( i = 0; i < x.length; i++ ) { + x[ i ] = f32( x[ i ] ); + expected[ i ] = f32( expected[ i ] ); + v = expf( x[ i ] ); + delta = abs( v - expected[ i ] ); + tol = EPS * abs( expected[ i ] ); + t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + } + t.end(); +}); From 1e9909e0a3e284a37e45460bff00f83f406db67c Mon Sep 17 00:00:00 2001 From: Arjan Date: Sun, 26 Jul 2026 11:51:58 +0530 Subject: [PATCH 4/9] feat: add C implementation of `expf` --- type: pre_commit_static_analysis_report description: Results of running static analysis checks when committing changes. report: - task: lint_filenames status: passed - task: lint_editorconfig status: passed - task: lint_markdown_pkg_readmes status: na - task: lint_markdown_docs status: na - task: lint_markdown status: na - task: lint_package_json status: passed - task: lint_repl_help status: na - task: lint_javascript_src status: passed - task: lint_javascript_cli status: na - task: lint_javascript_examples status: na - task: lint_javascript_tests status: na - task: lint_javascript_benchmarks status: na - task: lint_python status: na - task: lint_r status: na - task: lint_c_src status: missing_dependencies - task: lint_c_examples status: na - task: lint_c_benchmarks status: na - task: lint_c_tests_fixtures status: na - task: lint_shell status: na - task: lint_typescript_declarations status: passed - task: lint_typescript_tests status: na - task: lint_license_headers status: passed --- --- .../math/base/special/expf/binding.gyp | 170 ++++++++++++++++++ .../math/base/special/expf/include.gypi | 53 ++++++ .../include/stdlib/math/base/special/expf.h | 38 ++++ .../math/base/special/expf/lib/native.js | 58 ++++++ .../math/base/special/expf/lib/polyval_p.js | 26 +-- .../math/base/special/expf/manifest.json | 51 ++++++ .../math/base/special/expf/package.json | 1 + .../base/special/expf/scripts/evalpoly.js | 122 +++++++++++++ .../math/base/special/expf/src/Makefile | 70 ++++++++ .../math/base/special/expf/src/addon.c | 22 +++ .../@stdlib/math/base/special/expf/src/main.c | 101 +++++++++++ 11 files changed, 694 insertions(+), 18 deletions(-) create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/binding.gyp create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/include.gypi create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/include/stdlib/math/base/special/expf.h create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/lib/native.js create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/manifest.json create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/scripts/evalpoly.js create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/src/Makefile create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/src/addon.c create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/src/main.c diff --git a/lib/node_modules/@stdlib/math/base/special/expf/binding.gyp b/lib/node_modules/@stdlib/math/base/special/expf/binding.gyp new file mode 100644 index 000000000000..1058b57bab16 --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/binding.gyp @@ -0,0 +1,170 @@ +# @license Apache-2.0 +# +# Copyright (c) 2022 The Stdlib Authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +# A `.gyp` file for building a Node.js native add-on. +# +# [1]: https://gyp.gsrc.io/docs/InputFormatReference.md +# [2]: https://gyp.gsrc.io/docs/UserDocumentation.md +{ + # List of files to include in this file: + 'includes': [ + './include.gypi', + ], + + # Define variables to be used throughout the configuration for all targets: + 'variables': { + # Target name should match the add-on export name: + 'addon_target_name%': 'addon', + + # Set variables based on the host OS: + 'conditions': [ + [ + 'OS=="win"', + { + # Define the object file suffix: + 'obj': 'obj', + }, + { + # Define the object file suffix: + 'obj': 'o', + } + ], # end condition (OS=="win") + ], # end conditions + }, # end variables + + # Define compile targets: + 'targets': [ + + # Target to generate an add-on: + { + # The target name should match the add-on export name: + 'target_name': '<(addon_target_name)', + + # Define dependencies: + 'dependencies': [], + + # Define directories which contain relevant include headers: + 'include_dirs': [ + # Local include directory: + '<@(include_dirs)', + ], + + # List of source files: + 'sources': [ + '<@(src_files)', + ], + + # Settings which should be applied when a target's object files are used as linker input: + 'link_settings': { + # Define libraries: + 'libraries': [ + '<@(libraries)', + ], + + # Define library directories: + 'library_dirs': [ + '<@(library_dirs)', + ], + }, + + # C/C++ compiler flags: + 'cflags': [ + # Enable commonly used warning options: + '-Wall', + + # Aggressive optimization: + '-O3', + ], + + # C specific compiler flags: + 'cflags_c': [ + # Specify the C standard to which a program is expected to conform: + '-std=c99', + ], + + # C++ specific compiler flags: + 'cflags_cpp': [ + # Specify the C++ standard to which a program is expected to conform: + '-std=c++11', + ], + + # Linker flags: + 'ldflags': [], + + # Apply conditions based on the host OS: + 'conditions': [ + [ + 'OS=="mac"', + { + # Linker flags: + 'ldflags': [ + '-undefined dynamic_lookup', + '-Wl,-no-pie', + '-Wl,-search_paths_first', + ], + }, + ], # end condition (OS=="mac") + [ + 'OS!="win"', + { + # C/C++ flags: + 'cflags': [ + # Generate platform-independent code: + '-fPIC', + ], + }, + ], # end condition (OS!="win") + ], # end conditions + }, # end target <(addon_target_name) + + # Target to copy a generated add-on to a standard location: + { + 'target_name': 'copy_addon', + + # Declare that the output of this target is not linked: + 'type': 'none', + + # Define dependencies: + 'dependencies': [ + # Require that the add-on be generated before building this target: + '<(addon_target_name)', + ], + + # Define a list of actions: + 'actions': [ + { + 'action_name': 'copy_addon', + 'message': 'Copying addon...', + + # Explicitly list the inputs in the command-line invocation below: + 'inputs': [], + + # Declare the expected outputs: + 'outputs': [ + '<(addon_output_dir)/<(addon_target_name).node', + ], + + # Define the command-line invocation: + 'action': [ + 'cp', + '<(PRODUCT_DIR)/<(addon_target_name).node', + '<(addon_output_dir)/<(addon_target_name).node', + ], + }, + ], # end actions + }, # end target copy_addon + ], # end targets +} diff --git a/lib/node_modules/@stdlib/math/base/special/expf/include.gypi b/lib/node_modules/@stdlib/math/base/special/expf/include.gypi new file mode 100644 index 000000000000..3b437d524797 --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/include.gypi @@ -0,0 +1,53 @@ +# @license Apache-2.0 +# +# Copyright (c) 2022 The Stdlib Authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +# A GYP include file for building a Node.js native add-on. +# +# Main documentation: +# +# [1]: https://gyp.gsrc.io/docs/InputFormatReference.md +# [2]: https://gyp.gsrc.io/docs/UserDocumentation.md +{ + # Define variables to be used throughout the configuration for all targets: + 'variables': { + # Source directory: + 'src_dir': './src', + + # Include directories: + 'include_dirs': [ + ' + +static const double LN2_HI = 6.93147180369123816490e-01; +static const double LN2_LO = 1.90821492927058770002e-10; +/* Begin auto-generated functions. The following functions are auto-generated. Do not edit directly. */ + +// BEGIN: polyval_p + +/** +* Evaluates a polynomial. +* +* ## Notes +* +* - The implementation uses [Horner's rule][horners-method] for efficient computation. +* +* [horners-method]: https://en.wikipedia.org/wiki/Horner%27s_method +* +* @param x value at which to evaluate the polynomial +* @return evaluated polynomial +*/ +static float polyval_p( const float x ) { + return 0.50000001201f + (x * (0.16666665459f + (x * (0.041665795894f + (x * (0.0083334519073f + (x * (0.0013981999507f + (x * 0.000198756915f))))))))); +} + +// END: polyval_p + +/* End auto-generated functions. */ + +/** +* Evaluates the natural exponential function of single-precision floating-point numbers. +* +* @param x input value +* @return output value +* +* @example +* float out = stdlib_base_exp( 0.0 ); +* // returns 1.0 +*/ +float stdlib_base_expf( const float x ) { + float z; + float g; + float n; + if ( x > STDLIB_CONSTANT_FLOAT32_MAX_LN ) { + return STDLIB_CONSTANT_FLOAT32_MAX; + } + if ( x < STDLIB_CONSTANT_FLOAT32_MIN_LN ) { + return 0.0f; + } + + // e^x = e^(nln2 + g) = e^(nln2) * e^g = 2^n * e^g. + z = stdlib_base_floorf( STDLIB_CONSTANT_FLOAT32_LOG2E * x + 0.5f ); + g = x; + g -= z * LN2_HI; + g -= z * LN2_LO; + n = z; + z = g * g; + + // e^g ≈ 1 + g + g^2 * P(x) + z = 1.0f + g + z * polyval_p( g ); + + return stdlib_base_ldexpf( z, n ); +} From f267ab4238f58168f47d4fec15c1327667f55716 Mon Sep 17 00:00:00 2001 From: Arjan Date: Sun, 26 Jul 2026 12:04:36 +0530 Subject: [PATCH 5/9] feat: add test for C implementation --- type: pre_commit_static_analysis_report description: Results of running static analysis checks when committing changes. report: - task: lint_filenames status: passed - task: lint_editorconfig status: passed - task: lint_markdown_pkg_readmes status: na - task: lint_markdown_docs status: na - task: lint_markdown status: na - task: lint_package_json status: na - task: lint_repl_help status: na - task: lint_javascript_src status: na - task: lint_javascript_cli status: na - task: lint_javascript_examples status: na - task: lint_javascript_tests status: passed - task: lint_javascript_benchmarks status: na - task: lint_python status: na - task: lint_r status: na - task: lint_c_src status: na - task: lint_c_examples status: na - task: lint_c_benchmarks status: na - task: lint_c_tests_fixtures status: na - task: lint_shell status: na - task: lint_typescript_declarations status: passed - task: lint_typescript_tests status: na - task: lint_license_headers status: passed --- --- .../base/special/expf/test/test.native.js | 164 ++++++++++++++++++ 1 file changed, 164 insertions(+) create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/test/test.native.js diff --git a/lib/node_modules/@stdlib/math/base/special/expf/test/test.native.js b/lib/node_modules/@stdlib/math/base/special/expf/test/test.native.js new file mode 100644 index 000000000000..fb5c757d9e7c --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/test/test.native.js @@ -0,0 +1,164 @@ +/** +* @license Apache-2.0 +* +* Copyright (c) 2018 The Stdlib Authors. +* +* Licensed under the Apache License, Version 2.0 (the "License"); +* you may not use this file except in compliance with the License. +* You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +*/ + +'use strict'; + +// MODULES // + +var resolve = require( 'path' ).resolve; +var tape = require( 'tape' ); +var abs = require( '@stdlib/math/base/special/abs' ); +var f32 = require( '@stdlib/number/float64/base/to-float32' ); +var EPS = require( '@stdlib/constants/float32/eps' ); +var tryRequire = require( '@stdlib/utils/try-require' ); + + +// FIXTURES // + +var mediumNegative = require( './fixtures/julia/medium_negative.json' ); +var mediumPositive = require( './fixtures/julia/medium_positive.json' ); +var smallNegative = require( './fixtures/julia/small_negative.json' ); +var smallPositive = require( './fixtures/julia/small_positive.json' ); +var tiny = require( './fixtures/julia/tiny.json' ); + + +// VARIABLES // + +var expf = tryRequire( resolve( __dirname, './../lib/native.js' ) ); +var opts = { + 'skip': ( expf instanceof Error ) +}; + + +// TESTS // + +tape( 'main export is a function', opts, function test( t ) { + t.ok( true, __filename ); + t.strictEqual( typeof expf, 'function', 'main export is a function' ); + t.end(); +}); + +tape( 'the function accurately computes the natural exponential function for negative medium numbers', opts, function test( t ) { + var expected; + var delta; + var tol; + var x; + var v; + var i; + + x = mediumNegative.x; + expected = mediumNegative.expected; + + for ( i = 0; i < x.length; i++ ) { + x[ i ] = f32( x[ i ] ); + expected[ i ] = f32( expected[ i ] ); + v = expf( x[ i ] ); + delta = abs( v - expected[ i ] ); + tol = EPS * abs( expected[ i ] ); + t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + } + t.end(); +}); + +tape( 'the function accurately computes the natural exponential function for positive medium numbers', opts, function test( t ) { + var expected; + var delta; + var tol; + var x; + var v; + var i; + + x = mediumPositive.x; + expected = mediumPositive.expected; + + for ( i = 0; i < x.length; i++ ) { + x[ i ] = f32( x[ i ] ); + expected[ i ] = f32( expected[ i ] ); + v = expf( x[ i ] ); + delta = abs( v - expected[ i ] ); + tol = EPS * abs( expected[ i ] ); + t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + } + t.end(); +}); + +tape( 'the function accurately computes the natural exponential function for negative small numbers', opts, function test( t ) { + var expected; + var delta; + var tol; + var x; + var v; + var i; + + x = smallNegative.x; + expected = smallNegative.expected; + + for ( i = 0; i < x.length; i++ ) { + x[ i ] = f32( x[ i ] ); + expected[ i ] = f32( expected[ i ] ); + v = expf( x[ i ] ); + delta = abs( v - expected[ i ] ); + tol = EPS * abs( expected[ i ] ); + t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + } + t.end(); +}); + +tape( 'the function accurately computes the natural exponential function for positive small numbers', opts, function test( t ) { + var expected; + var delta; + var tol; + var x; + var v; + var i; + + x = smallPositive.x; + expected = smallPositive.expected; + + for ( i = 0; i < x.length; i++ ) { + x[ i ] = f32( x[ i ] ); + expected[ i ] = f32( expected[ i ] ); + v = expf( x[ i ] ); + delta = abs( v - expected[ i ] ); + tol = EPS * abs( expected[ i ] ); + t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + } + t.end(); +}); + +tape( 'the function accurately computes the natural exponential function for very small `x`', opts, function test( t ) { + var expected; + var delta; + var tol; + var x; + var v; + var i; + + x = tiny.x; + expected = tiny.expected; + + for ( i = 0; i < x.length; i++ ) { + x[ i ] = f32( x[ i ] ); + expected[ i ] = f32( expected[ i ] ); + v = expf( x[ i ] ); + delta = abs( v - expected[ i ] ); + tol = EPS * abs( expected[ i ] ); + t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + } + t.end(); +}); From e4a69563379795f7615fc2532911eb646ef6c3d7 Mon Sep 17 00:00:00 2001 From: Arjan Date: Sun, 26 Jul 2026 12:43:51 +0530 Subject: [PATCH 6/9] test: migrate `math/base/special/expf` to ULP-based testing --- type: pre_commit_static_analysis_report description: Results of running static analysis checks when committing changes. report: - task: lint_filenames status: passed - task: lint_editorconfig status: passed - task: lint_markdown_pkg_readmes status: na - task: lint_markdown_docs status: na - task: lint_markdown status: na - task: lint_package_json status: na - task: lint_repl_help status: na - task: lint_javascript_src status: na - task: lint_javascript_cli status: na - task: lint_javascript_examples status: na - task: lint_javascript_tests status: passed - task: lint_javascript_benchmarks status: na - task: lint_python status: na - task: lint_r status: na - task: lint_c_src status: na - task: lint_c_examples status: na - task: lint_c_benchmarks status: na - task: lint_c_tests_fixtures status: na - task: lint_shell status: na - task: lint_typescript_declarations status: passed - task: lint_typescript_tests status: na - task: lint_license_headers status: passed --- --- .../math/base/special/expf/test/test.js | 68 +++++++------------ .../base/special/expf/test/test.native.js | 68 +++++++------------ 2 files changed, 52 insertions(+), 84 deletions(-) diff --git a/lib/node_modules/@stdlib/math/base/special/expf/test/test.js b/lib/node_modules/@stdlib/math/base/special/expf/test/test.js index 24e40c428901..1c66460e7d8a 100644 --- a/lib/node_modules/@stdlib/math/base/special/expf/test/test.js +++ b/lib/node_modules/@stdlib/math/base/special/expf/test/test.js @@ -21,9 +21,8 @@ // MODULES // var tape = require( 'tape' ); -var abs = require( '@stdlib/math/base/special/abs' ); var f32 = require( '@stdlib/number/float64/base/to-float32' ); -var EPS = require( '@stdlib/constants/float32/eps' ); +var isAlmostSameValue = require( '@stdlib/number/float32/base/assert/is-almost-same-value' ); var expf = require( './../lib' ); @@ -46,10 +45,9 @@ tape( 'main export is a function', function test( t ) { tape( 'the function accurately computes the natural exponential function for negative medium numbers', function test( t ) { var expected; - var delta; - var tol; var x; - var v; + var y; + var e; var i; x = mediumNegative.x; @@ -57,21 +55,18 @@ tape( 'the function accurately computes the natural exponential function for neg for ( i = 0; i < x.length; i++ ) { x[ i ] = f32( x[ i ] ); - expected[ i ] = f32( expected[ i ] ); - v = expf( x[ i ] ); - delta = abs( v - expected[ i ] ); - tol = EPS * abs( expected[ i ] ); - t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + e = f32( expected[ i ] ); + y = expf( x[ i ] ); + t.strictEqual( isAlmostSameValue( y, e, 1 ), true, 'returns expected value' ); } t.end(); }); tape( 'the function accurately computes the natural exponential function for positive medium numbers', function test( t ) { var expected; - var delta; - var tol; var x; - var v; + var y; + var e; var i; x = mediumPositive.x; @@ -79,21 +74,18 @@ tape( 'the function accurately computes the natural exponential function for pos for ( i = 0; i < x.length; i++ ) { x[ i ] = f32( x[ i ] ); - expected[ i ] = f32( expected[ i ] ); - v = expf( x[ i ] ); - delta = abs( v - expected[ i ] ); - tol = EPS * abs( expected[ i ] ); - t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + e = f32( expected[ i ] ); + y = expf( x[ i ] ); + t.strictEqual( isAlmostSameValue( y, e, 1 ), true, 'returns expected value' ); } t.end(); }); tape( 'the function accurately computes the natural exponential function for negative small numbers', function test( t ) { var expected; - var delta; - var tol; var x; - var v; + var y; + var e; var i; x = smallNegative.x; @@ -101,21 +93,18 @@ tape( 'the function accurately computes the natural exponential function for neg for ( i = 0; i < x.length; i++ ) { x[ i ] = f32( x[ i ] ); - expected[ i ] = f32( expected[ i ] ); - v = expf( x[ i ] ); - delta = abs( v - expected[ i ] ); - tol = EPS * abs( expected[ i ] ); - t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + e = f32( expected[ i ] ); + y = expf( x[ i ] ); + t.strictEqual( isAlmostSameValue( y, e, 1 ), true, 'returns expected value' ); } t.end(); }); tape( 'the function accurately computes the natural exponential function for positive small numbers', function test( t ) { var expected; - var delta; - var tol; var x; - var v; + var y; + var e; var i; x = smallPositive.x; @@ -123,21 +112,18 @@ tape( 'the function accurately computes the natural exponential function for pos for ( i = 0; i < x.length; i++ ) { x[ i ] = f32( x[ i ] ); - expected[ i ] = f32( expected[ i ] ); - v = expf( x[ i ] ); - delta = abs( v - expected[ i ] ); - tol = EPS * abs( expected[ i ] ); - t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + e = f32( expected[ i ] ); + y = expf( x[ i ] ); + t.strictEqual( isAlmostSameValue( y, e, 1 ), true, 'returns expected value' ); } t.end(); }); tape( 'the function accurately computes the natural exponential function for very small `x`', function test( t ) { var expected; - var delta; - var tol; var x; - var v; + var y; + var e; var i; x = tiny.x; @@ -145,11 +131,9 @@ tape( 'the function accurately computes the natural exponential function for ver for ( i = 0; i < x.length; i++ ) { x[ i ] = f32( x[ i ] ); - expected[ i ] = f32( expected[ i ] ); - v = expf( x[ i ] ); - delta = abs( v - expected[ i ] ); - tol = EPS * abs( expected[ i ] ); - t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + e = f32( expected[ i ] ); + y = expf( x[ i ] ); + t.strictEqual( isAlmostSameValue( y, e, 1 ), true, 'returns expected value' ); } t.end(); }); diff --git a/lib/node_modules/@stdlib/math/base/special/expf/test/test.native.js b/lib/node_modules/@stdlib/math/base/special/expf/test/test.native.js index fb5c757d9e7c..53ccf0f3f80d 100644 --- a/lib/node_modules/@stdlib/math/base/special/expf/test/test.native.js +++ b/lib/node_modules/@stdlib/math/base/special/expf/test/test.native.js @@ -22,9 +22,8 @@ var resolve = require( 'path' ).resolve; var tape = require( 'tape' ); -var abs = require( '@stdlib/math/base/special/abs' ); var f32 = require( '@stdlib/number/float64/base/to-float32' ); -var EPS = require( '@stdlib/constants/float32/eps' ); +var isAlmostSameValue = require( '@stdlib/number/float32/base/assert/is-almost-same-value' ); var tryRequire = require( '@stdlib/utils/try-require' ); @@ -55,10 +54,9 @@ tape( 'main export is a function', opts, function test( t ) { tape( 'the function accurately computes the natural exponential function for negative medium numbers', opts, function test( t ) { var expected; - var delta; - var tol; var x; - var v; + var y; + var e; var i; x = mediumNegative.x; @@ -66,21 +64,18 @@ tape( 'the function accurately computes the natural exponential function for neg for ( i = 0; i < x.length; i++ ) { x[ i ] = f32( x[ i ] ); - expected[ i ] = f32( expected[ i ] ); - v = expf( x[ i ] ); - delta = abs( v - expected[ i ] ); - tol = EPS * abs( expected[ i ] ); - t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + e = f32( expected[ i ] ); + y = expf( x[ i ] ); + t.strictEqual( isAlmostSameValue( y, e, 1 ), true, 'returns expected value' ); } t.end(); }); tape( 'the function accurately computes the natural exponential function for positive medium numbers', opts, function test( t ) { var expected; - var delta; - var tol; var x; - var v; + var y; + var e; var i; x = mediumPositive.x; @@ -88,21 +83,18 @@ tape( 'the function accurately computes the natural exponential function for pos for ( i = 0; i < x.length; i++ ) { x[ i ] = f32( x[ i ] ); - expected[ i ] = f32( expected[ i ] ); - v = expf( x[ i ] ); - delta = abs( v - expected[ i ] ); - tol = EPS * abs( expected[ i ] ); - t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + e = f32( expected[ i ] ); + y = expf( x[ i ] ); + t.strictEqual( isAlmostSameValue( y, e, 1 ), true, 'returns expected value' ); } t.end(); }); tape( 'the function accurately computes the natural exponential function for negative small numbers', opts, function test( t ) { var expected; - var delta; - var tol; var x; - var v; + var y; + var e; var i; x = smallNegative.x; @@ -110,21 +102,18 @@ tape( 'the function accurately computes the natural exponential function for neg for ( i = 0; i < x.length; i++ ) { x[ i ] = f32( x[ i ] ); - expected[ i ] = f32( expected[ i ] ); - v = expf( x[ i ] ); - delta = abs( v - expected[ i ] ); - tol = EPS * abs( expected[ i ] ); - t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + e = f32( expected[ i ] ); + y = expf( x[ i ] ); + t.strictEqual( isAlmostSameValue( y, e, 1 ), true, 'returns expected value' ); } t.end(); }); tape( 'the function accurately computes the natural exponential function for positive small numbers', opts, function test( t ) { var expected; - var delta; - var tol; var x; - var v; + var y; + var e; var i; x = smallPositive.x; @@ -132,21 +121,18 @@ tape( 'the function accurately computes the natural exponential function for pos for ( i = 0; i < x.length; i++ ) { x[ i ] = f32( x[ i ] ); - expected[ i ] = f32( expected[ i ] ); - v = expf( x[ i ] ); - delta = abs( v - expected[ i ] ); - tol = EPS * abs( expected[ i ] ); - t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + e = f32( expected[ i ] ); + y = expf( x[ i ] ); + t.strictEqual( isAlmostSameValue( y, e, 1 ), true, 'returns expected value' ); } t.end(); }); tape( 'the function accurately computes the natural exponential function for very small `x`', opts, function test( t ) { var expected; - var delta; - var tol; var x; - var v; + var y; + var e; var i; x = tiny.x; @@ -154,11 +140,9 @@ tape( 'the function accurately computes the natural exponential function for ver for ( i = 0; i < x.length; i++ ) { x[ i ] = f32( x[ i ] ); - expected[ i ] = f32( expected[ i ] ); - v = expf( x[ i ] ); - delta = abs( v - expected[ i ] ); - tol = EPS * abs( expected[ i ] ); - t.ok( delta <= tol, 'within tolerance. x: ' + x[ i ] + '. Value: ' + v + '. Expected: ' + expected[ i ] + '. Tolerance: ' + tol + '.' ); + e = f32( expected[ i ] ); + y = expf( x[ i ] ); + t.strictEqual( isAlmostSameValue( y, e, 1 ), true, 'returns expected value' ); } t.end(); }); From 029a0ab51e62a612b254ca034daf154e63b063d9 Mon Sep 17 00:00:00 2001 From: Arjan Date: Sun, 26 Jul 2026 13:26:53 +0530 Subject: [PATCH 7/9] fix: update directories, types fields in package.json --- type: pre_commit_static_analysis_report description: Results of running static analysis checks when committing changes. report: - task: lint_filenames status: passed - task: lint_editorconfig status: passed - task: lint_markdown_pkg_readmes status: na - task: lint_markdown_docs status: na - task: lint_markdown status: na - task: lint_package_json status: passed - task: lint_repl_help status: na - task: lint_javascript_src status: na - task: lint_javascript_cli status: na - task: lint_javascript_examples status: na - task: lint_javascript_tests status: na - task: lint_javascript_benchmarks status: na - task: lint_python status: na - task: lint_r status: na - task: lint_c_src status: na - task: lint_c_examples status: na - task: lint_c_benchmarks status: na - task: lint_c_tests_fixtures status: na - task: lint_shell status: na - task: lint_typescript_declarations status: passed - task: lint_typescript_tests status: na - task: lint_license_headers status: passed --- --- .../@stdlib/math/base/special/expf/package.json | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/lib/node_modules/@stdlib/math/base/special/expf/package.json b/lib/node_modules/@stdlib/math/base/special/expf/package.json index 0b769cbb79e7..7a7eeb810335 100644 --- a/lib/node_modules/@stdlib/math/base/special/expf/package.json +++ b/lib/node_modules/@stdlib/math/base/special/expf/package.json @@ -16,10 +16,16 @@ "main": "./lib", "gypfile": true, "directories": { - "lib": "./lib", + "benchmark": "./benchmark", "doc": "./docs", + "example": "./examples", + "include": "./include", + "lib": "./lib", + "scripts": "./scripts", + "src": "./src", "test": "./test" }, + "types": "./docs/types", "scripts": {}, "homepage": "https://github.com/stdlib-js/stdlib", "repository": { From 6568f1adc8065d8177b237dc5809a9c0b856664a Mon Sep 17 00:00:00 2001 From: Arjan Date: Sun, 26 Jul 2026 16:01:05 +0530 Subject: [PATCH 8/9] feat: add js and native benchmarks --- type: pre_commit_static_analysis_report description: Results of running static analysis checks when committing changes. report: - task: lint_filenames status: passed - task: lint_editorconfig status: passed - task: lint_markdown_pkg_readmes status: na - task: lint_markdown_docs status: na - task: lint_markdown status: na - task: lint_package_json status: na - task: lint_repl_help status: na - task: lint_javascript_src status: na - task: lint_javascript_cli status: na - task: lint_javascript_examples status: na - task: lint_javascript_tests status: na - task: lint_javascript_benchmarks status: passed - task: lint_python status: na - task: lint_r status: na - task: lint_c_src status: na - task: lint_c_examples status: na - task: lint_c_benchmarks status: missing_dependencies - task: lint_c_tests_fixtures status: na - task: lint_shell status: na - task: lint_typescript_declarations status: passed - task: lint_typescript_tests status: na - task: lint_license_headers status: passed --- --- .../base/special/expf/benchmark/benchmark.js | 79 ++++++++++ .../expf/benchmark/benchmark.native.js | 64 +++++++++ .../base/special/expf/benchmark/c/Makefile | 126 ++++++++++++++++ .../base/special/expf/benchmark/c/benchmark.c | 135 ++++++++++++++++++ .../math/base/special/expf/manifest.json | 38 +++++ 5 files changed, 442 insertions(+) create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/benchmark/benchmark.js create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/benchmark/benchmark.native.js create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/benchmark/c/Makefile create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/benchmark/c/benchmark.c diff --git a/lib/node_modules/@stdlib/math/base/special/expf/benchmark/benchmark.js b/lib/node_modules/@stdlib/math/base/special/expf/benchmark/benchmark.js new file mode 100644 index 000000000000..c972f9d0ba86 --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/benchmark/benchmark.js @@ -0,0 +1,79 @@ +/** +* @license Apache-2.0 +* +* Copyright (c) 2018 The Stdlib Authors. +* +* Licensed under the Apache License, Version 2.0 (the "License"); +* you may not use this file except in compliance with the License. +* You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +*/ + +'use strict'; + +// MODULES // + +var bench = require( '@stdlib/bench' ); +var randu = require( '@stdlib/random/array/uniform' ); +var isnan = require( '@stdlib/math/base/assert/is-nan' ); +var format = require( '@stdlib/string/format' ); +var pkg = require( './../package.json' ).name; +var expf = require( './../lib' ); + + +// MAIN // + +bench( pkg, function benchmark( b ) { + var x; + var y; + var i; + + x = randu( 100, -50.0, 50.0, { + 'dtype': 'float32' + }); + + b.tic(); + for ( i = 0; i < b.iterations; i++ ) { + y = expf( x[ i % x.length ] ); + if ( isnan( y ) ) { + b.fail( 'should not return NaN' ); + } + } + b.toc(); + if ( isnan( y ) ) { + b.fail( 'should not return NaN' ); + } + b.pass( 'benchmark finished' ); + b.end(); +}); + +bench( format( '%s::built-in', pkg ), function benchmark( b ) { + var x; + var y; + var i; + + x = randu( 100, -50.0, 50.0, { + 'dtype': 'float32' + }); + + b.tic(); + for ( i = 0; i < b.iterations; i++ ) { + y = Math.exp( x[ i % x.length ] ); // eslint-disable-line stdlib/no-builtin-math + if ( isnan( y ) ) { + b.fail( 'should not return NaN' ); + } + } + b.toc(); + if ( isnan( y ) ) { + b.fail( 'should not return NaN' ); + } + b.pass( 'benchmark finished' ); + b.end(); +}); diff --git a/lib/node_modules/@stdlib/math/base/special/expf/benchmark/benchmark.native.js b/lib/node_modules/@stdlib/math/base/special/expf/benchmark/benchmark.native.js new file mode 100644 index 000000000000..ca0983f4193f --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/benchmark/benchmark.native.js @@ -0,0 +1,64 @@ +/** +* @license Apache-2.0 +* +* Copyright (c) 2022 The Stdlib Authors. +* +* Licensed under the Apache License, Version 2.0 (the "License"); +* you may not use this file except in compliance with the License. +* You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +*/ + +'use strict'; + +// MODULES // + +var resolve = require( 'path' ).resolve; +var bench = require( '@stdlib/bench' ); +var randu = require( '@stdlib/random/array/uniform' ); +var isnan = require( '@stdlib/math/base/assert/is-nan' ); +var tryRequire = require( '@stdlib/utils/try-require' ); +var format = require( '@stdlib/string/format' ); +var pkg = require( './../package.json' ).name; + + +// VARIABLES // + +var expf = tryRequire( resolve( __dirname, './../lib/native.js' ) ); +var opts = { + 'skip': ( expf instanceof Error ) +}; + + +// MAIN // + +bench( format( '%s::native', pkg ), opts, function benchmark( b ) { + var x; + var y; + var i; + + x = randu( 100, -50.0, 50.0, { + 'dtype': 'float32' + }); + + b.tic(); + for ( i = 0; i < b.iterations; i++ ) { + y = expf( x[ i % x.length ] ); + if ( isnan( y ) ) { + b.fail( 'should not return NaN' ); + } + } + b.toc(); + if ( isnan( y ) ) { + b.fail( 'should not return NaN' ); + } + b.pass( 'benchmark finished' ); + b.end(); +}); diff --git a/lib/node_modules/@stdlib/math/base/special/expf/benchmark/c/Makefile b/lib/node_modules/@stdlib/math/base/special/expf/benchmark/c/Makefile new file mode 100644 index 000000000000..f24d4547e47a --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/benchmark/c/Makefile @@ -0,0 +1,126 @@ +#/ +# @license Apache-2.0 +# +# Copyright (c) 2018 The Stdlib Authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +#/ + +# VARIABLES # + +ifndef VERBOSE + QUIET := @ +else + QUIET := +endif + +# Determine the OS ([1][1], [2][2]). +# +# [1]: https://en.wikipedia.org/wiki/Uname#Examples +# [2]: http://stackoverflow.com/a/27776822/2225624 +OS ?= $(shell uname) +ifneq (, $(findstring MINGW,$(OS))) + OS := WINNT +else +ifneq (, $(findstring MSYS,$(OS))) + OS := WINNT +else +ifneq (, $(findstring CYGWIN,$(OS))) + OS := WINNT +else +ifneq (, $(findstring Windows_NT,$(OS))) + OS := WINNT +endif +endif +endif +endif + +# Define the program used for compiling C source files: +ifdef C_COMPILER + CC := $(C_COMPILER) +else + CC := gcc +endif + +# Define the command-line options when compiling C files: +CFLAGS ?= \ + -std=c99 \ + -O3 \ + -Wall \ + -pedantic + +# Determine whether to generate position independent code ([1][1], [2][2]). +# +# [1]: https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code-Gen-Options +# [2]: http://stackoverflow.com/questions/5311515/gcc-fpic-option +ifeq ($(OS), WINNT) + fPIC ?= +else + fPIC ?= -fPIC +endif + +# List of C targets: +c_targets := benchmark.out + + +# RULES # + +#/ +# Compiles C source files. +# +# @param {string} [C_COMPILER] - C compiler +# @param {string} [CFLAGS] - C compiler flags +# @param {(string|void)} [fPIC] - compiler flag indicating whether to generate position independent code +# +# @example +# make +# +# @example +# make all +#/ +all: $(c_targets) + +.PHONY: all + +#/ +# Compiles C source files. +# +# @private +# @param {string} CC - C compiler +# @param {string} CFLAGS - C compiler flags +# @param {(string|void)} fPIC - compiler flag indicating whether to generate position independent code +#/ +$(c_targets): %.out: %.c + $(QUIET) $(CC) $(CFLAGS) $(fPIC) -o $@ $< -lm + +#/ +# Runs compiled benchmarks. +# +# @example +# make run +#/ +run: $(c_targets) + $(QUIET) ./$< + +.PHONY: run + +#/ +# Removes generated files. +# +# @example +# make clean +#/ +clean: + $(QUIET) -rm -f *.o *.out + +.PHONY: clean diff --git a/lib/node_modules/@stdlib/math/base/special/expf/benchmark/c/benchmark.c b/lib/node_modules/@stdlib/math/base/special/expf/benchmark/c/benchmark.c new file mode 100644 index 000000000000..2c67f802d016 --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/benchmark/c/benchmark.c @@ -0,0 +1,135 @@ +/** +* @license Apache-2.0 +* +* Copyright (c) 2018 The Stdlib Authors. +* +* Licensed under the Apache License, Version 2.0 (the "License"); +* you may not use this file except in compliance with the License. +* You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +*/ + +#include +#include +#include +#include +#include + +#define NAME "expf" +#define ITERATIONS 1000000 +#define REPEATS 3 + +/** +* Prints the TAP version. +*/ +static void print_version( void ) { + printf( "TAP version 13\n" ); +} + +/** +* Prints the TAP summary. +* +* @param total total number of tests +* @param passing total number of passing tests +*/ +static void print_summary( int total, int passing ) { + printf( "#\n" ); + printf( "1..%d\n", total ); // TAP plan + printf( "# total %d\n", total ); + printf( "# pass %d\n", passing ); + printf( "#\n" ); + printf( "# ok\n" ); +} + +/** +* Prints benchmarks results. +* +* @param elapsed elapsed time in seconds +*/ +static void print_results( double elapsed ) { + double rate = (double)ITERATIONS / elapsed; + printf( " ---\n" ); + printf( " iterations: %d\n", ITERATIONS ); + printf( " elapsed: %0.9f\n", elapsed ); + printf( " rate: %0.9f\n", rate ); + printf( " ...\n" ); +} + +/** +* Returns a clock time. +* +* @return clock time +*/ +static double tic( void ) { + struct timeval now; + gettimeofday( &now, NULL ); + return (double)now.tv_sec + (double)now.tv_usec/1.0e6; +} + +/** +* Generates a random number on the interval [0,1). +* +* @return random number +*/ +static float rand_float( void ) { + int r = rand(); + return (float)r / ( (float)RAND_MAX + 1.0f ); +} + +/** +* Runs a benchmark. +* +* @return elapsed time in seconds +*/ +static double benchmark( void ) { + float x[ 100 ]; + float y; + double elapsed; + double t; + int i; + + for ( i = 0; i < 100; i++ ) { + x[ i ] = ( 100.0f * rand_float() ) - 50.0f; + } + + t = tic(); + for ( i = 0; i < ITERATIONS; i++ ) { + y = expf( x[ i % 100 ] ); + if ( y != y ) { + printf( "should not return NaN\n" ); + break; + } + } + elapsed = tic() - t; + if ( y != y ) { + printf( "should not return NaN\n" ); + } + return elapsed; +} + +/** +* Main execution sequence. +*/ +int main( void ) { + double elapsed; + int i; + + // Use the current time to seed the random number generator: + srand( time( NULL ) ); + + print_version(); + for ( i = 0; i < REPEATS; i++ ) { + printf( "# c::%s\n", NAME ); + elapsed = benchmark(); + print_results( elapsed ); + printf( "ok %d benchmark finished\n", i+1 ); + } + print_summary( REPEATS, REPEATS ); +} diff --git a/lib/node_modules/@stdlib/math/base/special/expf/manifest.json b/lib/node_modules/@stdlib/math/base/special/expf/manifest.json index a9787cebd915..e8db2779ba2b 100644 --- a/lib/node_modules/@stdlib/math/base/special/expf/manifest.json +++ b/lib/node_modules/@stdlib/math/base/special/expf/manifest.json @@ -46,6 +46,44 @@ "@stdlib/math/base/special/floorf", "@stdlib/math/base/special/ldexpf" ] + }, + { + "task": "benchmark", + "wasm": false, + "src": [ + "./src/main.c" + ], + "include": [ + "./include" + ], + "libraries": [], + "libpath": [], + "dependencies": [ + "@stdlib/math/base/assert/is-nan", + "@stdlib/constants/float64/ninf", + "@stdlib/constants/float64/pinf", + "@stdlib/math/base/special/trunc", + "@stdlib/math/base/special/ldexp" + ] + }, + { + "task": "examples", + "wasm": false, + "src": [ + "./src/main.c" + ], + "include": [ + "./include" + ], + "libraries": [], + "libpath": [], + "dependencies": [ + "@stdlib/math/base/assert/is-nan", + "@stdlib/constants/float64/ninf", + "@stdlib/constants/float64/pinf", + "@stdlib/math/base/special/trunc", + "@stdlib/math/base/special/ldexp" + ] } ] } From 4816d7ffc4bc551932269c6352206b240157e438 Mon Sep 17 00:00:00 2001 From: Arjan Date: Sun, 26 Jul 2026 16:16:21 +0530 Subject: [PATCH 9/9] docs: add examples and README.md --- type: pre_commit_static_analysis_report description: Results of running static analysis checks when committing changes. report: - task: lint_filenames status: passed - task: lint_editorconfig status: passed - task: lint_markdown_pkg_readmes status: passed - task: lint_markdown_docs status: na - task: lint_markdown status: na - task: lint_package_json status: na - task: lint_repl_help status: na - task: lint_javascript_src status: na - task: lint_javascript_cli status: na - task: lint_javascript_examples status: passed - task: lint_javascript_tests status: na - task: lint_javascript_benchmarks status: na - task: lint_python status: na - task: lint_r status: na - task: lint_c_src status: na - task: lint_c_examples status: missing_dependencies - task: lint_c_benchmarks status: na - task: lint_c_tests_fixtures status: na - task: lint_shell status: na - task: lint_typescript_declarations status: passed - task: lint_typescript_tests status: na - task: lint_license_headers status: passed --- --- .../@stdlib/math/base/special/expf/README.md | 231 ++++++++++++++++++ .../base/special/expf/examples/c/Makefile | 146 +++++++++++ .../base/special/expf/examples/c/example.c | 33 +++ .../math/base/special/expf/examples/index.js | 30 +++ .../math/base/special/expf/manifest.json | 16 +- 5 files changed, 442 insertions(+), 14 deletions(-) create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/README.md create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/examples/c/Makefile create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/examples/c/example.c create mode 100644 lib/node_modules/@stdlib/math/base/special/expf/examples/index.js diff --git a/lib/node_modules/@stdlib/math/base/special/expf/README.md b/lib/node_modules/@stdlib/math/base/special/expf/README.md new file mode 100644 index 000000000000..561b564f215b --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/README.md @@ -0,0 +1,231 @@ + + +# expf + +> Natural [exponential function][exponential-function] for single-precision floating-point numbers. + +
+ +The natural [exponential function][exponential-function] is defined as + + + +```math +y = e^x +``` + + + + + +where `e` is [Euler's][@stdlib/constants/float64/e] number. + +
+ + + +
+ +## Usage + +```javascript +var expf = require( '@stdlib/math/base/special/expf' ); +``` + +#### expf( x ) + +Evaluates the natural [exponential function][exponential-function]. + +```javascript +var v = expf( 4.0 ); +// returns ~54.5982 + +v = expf( -9.0 ); +// returns ~1.234e-4 + +v = expf( 0.0 ); +// returns 1.0 + +v = expf( NaN ); +// returns NaN +``` + +
+ + + +
+ +## Examples + + + +```javascript +var uniform = require( '@stdlib/random/array/uniform' ); +var logEachMap = require( '@stdlib/console/log-each-map' ); +var expf = require( '@stdlib/math/base/special/expf' ); + +var opts = { + 'dtype': 'float32' +}; +var x = uniform( 100, -50.0, 50.0, opts ); + +logEachMap( 'e^%0.4f = %0.4f', x, expf ); +``` + +
+ + + + + +* * * + +
+ +## C APIs + + + +
+ +
+ + + + + +
+ +### Usage + +```c +#include "stdlib/math/base/special/expf.h" +``` + +#### stdlib_base_expf( x ) + +Evaluates the natural [exponential function][exponential-function]. + +```c +float out = stdlib_base_expf( 4.0 ); +// returns ~54.5982 + +out = stdlib_base_expf( -9.0 ); +// returns ~1.234e-4 +``` + +The function accepts the following arguments: + +- **x**: `[in] float` input value. + +```c +float stdlib_base_expf( const float x ); +``` + +
+ + + + + +
+ +
+ + + + + +
+ +### Examples + +```c +#include "stdlib/math/base/special/expf.h" +#include +#include + +int main( void ) { + float x; + float v; + int i; + + for ( i = 0; i < 100; i++ ) { + x = ( (float)rand() / (float)RAND_MAX ) * 100.0f; + v = stdlib_base_expf( x ); + printf( "e^%lf = %lf\n", x, v ); + } +} +``` + +
+ + + +
+ + + + + +
+ +* * * + +## See Also + +- [`@stdlib/math/base/special/exp10`][@stdlib/math/base/special/exp10]: base 10 exponential function. +- [`@stdlib/math/base/special/exp2`][@stdlib/math/base/special/exp2]: base 2 exponential function. +- [`@stdlib/math/base/special/expm1`][@stdlib/math/base/special/expm1]: compute exp(x) - 1. +- [`@stdlib/math/base/special/ln`][@stdlib/math/base/special/ln]: evaluate the natural logarithm of a double-precision floating-point number. + +
+ + + + + +
+ +[exponential-function]: https://en.wikipedia.org/wiki/Exponential_function + +[@stdlib/constants/float64/e]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/constants/float64/e + + + +[@stdlib/math/base/special/exp10]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/math/base/special/exp10 + +[@stdlib/math/base/special/exp2]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/math/base/special/exp2 + +[@stdlib/math/base/special/expm1]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/math/base/special/expm1 + +[@stdlib/math/base/special/ln]: https://github.com/stdlib-js/stdlib/tree/develop/lib/node_modules/%40stdlib/math/base/special/ln + + + +
+ + + diff --git a/lib/node_modules/@stdlib/math/base/special/expf/examples/c/Makefile b/lib/node_modules/@stdlib/math/base/special/expf/examples/c/Makefile new file mode 100644 index 000000000000..91d364d19fc3 --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/examples/c/Makefile @@ -0,0 +1,146 @@ +#/ +# @license Apache-2.0 +# +# Copyright (c) 2022 The Stdlib Authors. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. +#/ + +# VARIABLES # + +ifndef VERBOSE + QUIET := @ +else + QUIET := +endif + +# Determine the OS ([1][1], [2][2]). +# +# [1]: https://en.wikipedia.org/wiki/Uname#Examples +# [2]: http://stackoverflow.com/a/27776822/2225624 +OS ?= $(shell uname) +ifneq (, $(findstring MINGW,$(OS))) + OS := WINNT +else +ifneq (, $(findstring MSYS,$(OS))) + OS := WINNT +else +ifneq (, $(findstring CYGWIN,$(OS))) + OS := WINNT +else +ifneq (, $(findstring Windows_NT,$(OS))) + OS := WINNT +endif +endif +endif +endif + +# Define the program used for compiling C source files: +ifdef C_COMPILER + CC := $(C_COMPILER) +else + CC := gcc +endif + +# Define the command-line options when compiling C files: +CFLAGS ?= \ + -std=c99 \ + -O3 \ + -Wall \ + -pedantic + +# Determine whether to generate position independent code ([1][1], [2][2]). +# +# [1]: https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code-Gen-Options +# [2]: http://stackoverflow.com/questions/5311515/gcc-fpic-option +ifeq ($(OS), WINNT) + fPIC ?= +else + fPIC ?= -fPIC +endif + +# List of includes (e.g., `-I /foo/bar -I /beep/boop/include`): +INCLUDE ?= + +# List of source files: +SOURCE_FILES ?= + +# List of libraries (e.g., `-lopenblas -lpthread`): +LIBRARIES ?= + +# List of library paths (e.g., `-L /foo/bar -L /beep/boop`): +LIBPATH ?= + +# List of C targets: +c_targets := example.out + + +# RULES # + +#/ +# Compiles source files. +# +# @param {string} [C_COMPILER] - C compiler (e.g., `gcc`) +# @param {string} [CFLAGS] - C compiler options +# @param {(string|void)} [fPIC] - compiler flag determining whether to generate position independent code (e.g., `-fPIC`) +# @param {string} [INCLUDE] - list of includes (e.g., `-I /foo/bar -I /beep/boop/include`) +# @param {string} [SOURCE_FILES] - list of source files +# @param {string} [LIBPATH] - list of library paths (e.g., `-L /foo/bar -L /beep/boop`) +# @param {string} [LIBRARIES] - list of libraries (e.g., `-lopenblas -lpthread`) +# +# @example +# make +# +# @example +# make all +#/ +all: $(c_targets) + +.PHONY: all + +#/ +# Compiles C source files. +# +# @private +# @param {string} CC - C compiler (e.g., `gcc`) +# @param {string} CFLAGS - C compiler options +# @param {(string|void)} fPIC - compiler flag determining whether to generate position independent code (e.g., `-fPIC`) +# @param {string} INCLUDE - list of includes (e.g., `-I /foo/bar`) +# @param {string} SOURCE_FILES - list of source files +# @param {string} LIBPATH - list of library paths (e.g., `-L /foo/bar`) +# @param {string} LIBRARIES - list of libraries (e.g., `-lopenblas`) +#/ +$(c_targets): %.out: %.c + $(QUIET) $(CC) $(CFLAGS) $(fPIC) $(INCLUDE) -o $@ $(SOURCE_FILES) $< $(LIBPATH) -lm $(LIBRARIES) + +#/ +# Runs compiled examples. +# +# @example +# make run +#/ +run: $(c_targets) + $(QUIET) ./$< + +.PHONY: run + +#/ +# Removes generated files. +# +# @example +# make clean +#/ +clean: + $(QUIET) -rm -f *.o *.out + +.PHONY: clean diff --git a/lib/node_modules/@stdlib/math/base/special/expf/examples/c/example.c b/lib/node_modules/@stdlib/math/base/special/expf/examples/c/example.c new file mode 100644 index 000000000000..5f6f10b2271f --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/examples/c/example.c @@ -0,0 +1,33 @@ +/** +* @license Apache-2.0 +* +* Copyright (c) 2022 The Stdlib Authors. +* +* Licensed under the Apache License, Version 2.0 (the "License"); +* you may not use this file except in compliance with the License. +* You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +*/ + +#include "stdlib/math/base/special/expf.h" +#include +#include + +int main( void ) { + float x; + float v; + int i; + + for ( i = 0; i < 100; i++ ) { + x = ( (float)rand() / (float)RAND_MAX ) * 100.0f; + v = stdlib_base_expf( x ); + printf( "e^%lf = %lf\n", x, v ); + } +} diff --git a/lib/node_modules/@stdlib/math/base/special/expf/examples/index.js b/lib/node_modules/@stdlib/math/base/special/expf/examples/index.js new file mode 100644 index 000000000000..3d7283f62f48 --- /dev/null +++ b/lib/node_modules/@stdlib/math/base/special/expf/examples/index.js @@ -0,0 +1,30 @@ +/** +* @license Apache-2.0 +* +* Copyright (c) 2018 The Stdlib Authors. +* +* Licensed under the Apache License, Version 2.0 (the "License"); +* you may not use this file except in compliance with the License. +* You may obtain a copy of the License at +* +* http://www.apache.org/licenses/LICENSE-2.0 +* +* Unless required by applicable law or agreed to in writing, software +* distributed under the License is distributed on an "AS IS" BASIS, +* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +* See the License for the specific language governing permissions and +* limitations under the License. +*/ + +'use strict'; + +var uniform = require( '@stdlib/random/array/uniform' ); +var logEachMap = require( '@stdlib/console/log-each-map' ); +var expf = require( './../lib' ); + +var opts = { + 'dtype': 'float32' +}; +var x = uniform( 100, -50.0, 50.0, opts ); + +logEachMap( 'e^%0.4f = %0.4f', x, expf ); diff --git a/lib/node_modules/@stdlib/math/base/special/expf/manifest.json b/lib/node_modules/@stdlib/math/base/special/expf/manifest.json index e8db2779ba2b..09b05dda42cd 100644 --- a/lib/node_modules/@stdlib/math/base/special/expf/manifest.json +++ b/lib/node_modules/@stdlib/math/base/special/expf/manifest.json @@ -58,13 +58,7 @@ ], "libraries": [], "libpath": [], - "dependencies": [ - "@stdlib/math/base/assert/is-nan", - "@stdlib/constants/float64/ninf", - "@stdlib/constants/float64/pinf", - "@stdlib/math/base/special/trunc", - "@stdlib/math/base/special/ldexp" - ] + "dependencies": [] }, { "task": "examples", @@ -77,13 +71,7 @@ ], "libraries": [], "libpath": [], - "dependencies": [ - "@stdlib/math/base/assert/is-nan", - "@stdlib/constants/float64/ninf", - "@stdlib/constants/float64/pinf", - "@stdlib/math/base/special/trunc", - "@stdlib/math/base/special/ldexp" - ] + "dependencies": [] } ] }