Random rounding mode#15
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…ly generated (uniform distribution) rounding mode.
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This pull request adds a macro
__RAPTOR_RANDOM_ROUNDING_MODEwhere if it were defined during compilation of RAPTOR,__RAPTOR_MPFR_DEFAULT_ROUNDING_MODEgenerates a new random MPFR rounding mode (betweenMPFR_RNDUandMPFR_RNDD) for each use.This pull request also adds a macro
__RATPTOR_USE_STOCHASTIC_ROUNDINGwhere if it were defined during compilation of RAPTOR, a naive implementation of stochastic rounding is used for each MPFR operation. The rounding mode is randomly selected betweenMPFR_RNDUandMPFR_RNDDwith the probability based on the proximity.PS: The macros can be defined from the
cmakecommand line with-DCMAKE_CXX_FLAGS.