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aa9bc17601
BMakefiles and other bits will follow. Requested by: Andrey Chernov Made world by: Chuck Robey
57 lines
1.5 KiB
C
57 lines
1.5 KiB
C
/* mpz_random -- Generate a random mpz_t of specified size.
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This function is non-portable and generates poor random numbers.
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Copyright (C) 1991, 1993, 1994, 1995 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Library General Public License as published by
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the Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
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License for more details.
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You should have received a copy of the GNU Library General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA. */
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#include "gmp.h"
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#include "gmp-impl.h"
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#include "urandom.h"
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void
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#if __STDC__
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mpz_random (mpz_ptr x, mp_size_t size)
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#else
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mpz_random (x, size)
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mpz_ptr x;
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mp_size_t size;
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#endif
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{
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mp_size_t i;
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mp_limb_t ran;
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mp_ptr xp;
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mp_size_t abs_size;
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abs_size = ABS (size);
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if (x->_mp_alloc < abs_size)
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_mpz_realloc (x, abs_size);
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xp = x->_mp_d;
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for (i = 0; i < abs_size; i++)
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{
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ran = urandom ();
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xp[i] = ran;
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}
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MPN_NORMALIZE (xp, abs_size);
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x->_mp_size = size < 0 ? -abs_size : abs_size;
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}
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