Introduce loadable pseudo-random number generators. #200
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etherx-dev
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After initial feedback, it was decided to split up the PR into several smaller commits |
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Add data structures and definitions.
Add runtime routines callable by a rnglib: getRngState getInitialBits putErrorCode Add rnglib routines callable by the runtime: startRng putSeed getRandomFpt getErrorText getRandomBits -- optional getRandomInt -- optional Add new standard functions: loadrng rngbits rngbitstring rngval
Add "loadable RNGs" to &features. Add _RNG_LIBRARY to the preprocessor predefined symbols.
RngIconEx is a reimplemtation of the (Icon) built-in generator as a loadable rnglib. It serves as an example for how implement a loadable rng library.
Rabbit is a cryptographically secure random number generator from the ESTREAM project. rngRbt implements it as a loadable rng library.
rngRlx++ is a reimplementation in C of the RanLux++ generator.
rngGSL isn't a random number generator as such; it provides an interface to the generators in the GNU Scientific Library, if that is installed.
Add a new argument --enable-rnglibs to configure. Detect the presence (or otherwise) of the GNU Scientific Library.
Add a test for --enable-rnglibs
…araibeh] This is a slight rework of commit 27b385c. It is needed because the PRNG code uses unicon_getrandom() in fmisc.r as well as init.r
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N.B. The PRNG interface introduced here is subject to review and may change.
PRNGs are per-thread and may be changed with the new loadrng() standard
function. Two PRNGs are present:
IconEx A reimplementation of the traditional generator
as a loadable library.
Rabbit A cryptographically strong PRNG from the eSTREAM project.
Other PRNGs -- probably RanLux and the Mersenne Twister -- will follow.