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author | Linus Nordberg <linus@nordberg.se> | 2000-03-31 16:19:07 +0200 |
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committer | Linus Nordberg <linus@nordberg.se> | 2000-03-31 16:19:07 +0200 |
commit | 332f65ff8794a8abee466e30386f9b76647cd2d8 (patch) | |
tree | 6b6d952cd7ad801943d4a14b5341a96aaa234948 /mpz/urandomb.c | |
parent | 62315b4f7f3ddefec618d83bd038eb8e35b646ba (diff) | |
download | gmp-332f65ff8794a8abee466e30386f9b76647cd2d8.tar.gz |
Rename urandom.c to urandomb.c.
Diffstat (limited to 'mpz/urandomb.c')
-rw-r--r-- | mpz/urandomb.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/mpz/urandomb.c b/mpz/urandomb.c new file mode 100644 index 000000000..f08ca6440 --- /dev/null +++ b/mpz/urandomb.c @@ -0,0 +1,49 @@ +/* urandomb (rop, state, n) -- Generate a uniform pseudorandom integer + in the range 0 to 2^N - 1, inclusive, using STATE as the random + state previously initialized by a call to gmp_rand_init(). + +Copyright (C) 1999, 2000 Free Software Foundation, Inc. + +This file is part of the GNU MP Library. + +The GNU MP Library is free software; you can redistribute it and/or modify +it under the terms of the GNU Library General Public License as published by +the Free Software Foundation; either version 2 of the License, or (at your +option) any later version. + +The GNU MP Library is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public +License for more details. + +You should have received a copy of the GNU Library General Public License +along with the GNU MP Library; see the file COPYING.LIB. If not, write to +the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, +MA 02111-1307, USA. */ + +#include "gmp.h" +#include "gmp-impl.h" + +void +#if __STDC__ +mpz_urandomb (mpz_t rop, gmp_rand_state s, unsigned long int nbits) +#else +mpz_urandomb (rop, nbits, s) + mpz_t rop; + gmp_rand_state s; + unsigned long int nbits; +#endif +{ + mp_ptr rp; + mp_size_t size; + + size = nbits / BITS_PER_MP_LIMB + (nbits % BITS_PER_MP_LIMB != 0); + if (size > SIZ (rop)) + _mpz_realloc (rop, size); + + rp = PTR (rop); + + mpn_rawrandom (rp, s, nbits); + MPN_NORMALIZE (rp, size); + SIZ (rop) = size; +} |