diff options
Diffstat (limited to 'Build/source/libs/gmp/gmp-src/mpn/generic/random.c')
-rw-r--r-- | Build/source/libs/gmp/gmp-src/mpn/generic/random.c | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/Build/source/libs/gmp/gmp-src/mpn/generic/random.c b/Build/source/libs/gmp/gmp-src/mpn/generic/random.c new file mode 100644 index 00000000000..485f9ebcea0 --- /dev/null +++ b/Build/source/libs/gmp/gmp-src/mpn/generic/random.c @@ -0,0 +1,50 @@ +/* mpn_random -- Generate random numbers. + +Copyright 2001, 2002 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 either: + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at your + option) any later version. + +or + + * the GNU General Public License as published by the Free Software + Foundation; either version 2 of the License, or (at your option) any + later version. + +or both in parallel, as here. + +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 General Public License +for more details. + +You should have received copies of the GNU General Public License and the +GNU Lesser General Public License along with the GNU MP Library. If not, +see https://www.gnu.org/licenses/. */ + +#include "gmp-impl.h" + +void +mpn_random (mp_ptr ptr, mp_size_t size) +{ + gmp_randstate_ptr rands; + + /* FIXME: Is size==0 supposed to be allowed? */ + ASSERT (size >= 0); + + if (size == 0) + return; + + rands = RANDS; + _gmp_rand (ptr, rands, size * GMP_NUMB_BITS); + + /* Make sure the most significant limb is non-zero. */ + while (ptr[size-1] == 0) + _gmp_rand (&ptr[size-1], rands, GMP_NUMB_BITS); +} |