mirror of
https://review.haiku-os.org/buildtools
synced 2025-02-07 14:34:51 +01:00
b58ddff026
* merged mpfr 3.0.0 and gmp 5.0.1 in buildtools trunk git-svn-id: file:///srv/svn/repos/haiku/buildtools/trunk@37378 a95241bf-73f2-0310-859d-f6bbb57e9c96
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
/* gmp_urandomb_ui -- random bits returned in a ulong.
|
|
|
|
Copyright 2003, 2004 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 Lesser General Public License as published by
|
|
the Free Software Foundation; either version 3 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 Lesser General Public
|
|
License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public License
|
|
along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
|
|
|
|
#include "gmp.h"
|
|
#include "gmp-impl.h"
|
|
|
|
|
|
/* Currently bits>=BITS_PER_ULONG is quietly truncated to BITS_PER_ULONG,
|
|
maybe this should raise an exception or something. */
|
|
|
|
unsigned long
|
|
gmp_urandomb_ui (gmp_randstate_ptr rstate, unsigned long bits)
|
|
{
|
|
mp_limb_t a[LIMBS_PER_ULONG];
|
|
|
|
/* start with zeros, since if bits==0 then _gmp_rand will store nothing at
|
|
all, or if bits <= GMP_NUMB_BITS then it will store only a[0] */
|
|
a[0] = 0;
|
|
#if LIMBS_PER_ULONG > 1
|
|
a[1] = 0;
|
|
#endif
|
|
|
|
_gmp_rand (a, rstate, MIN (bits, BITS_PER_ULONG));
|
|
|
|
#if LIMBS_PER_ULONG == 1
|
|
return a[0];
|
|
#else
|
|
return a[0] | (a[1] << GMP_NUMB_BITS);
|
|
#endif
|
|
}
|