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Annotation of OpenXM_contrib/gmp/mpz/urandomb.c, Revision 1.1.1.1

1.1       maekawa     1: /* mpz_urandomb (rop, state, n) -- Generate a uniform pseudorandom
                      2:    integer in the range 0 to 2^N - 1, inclusive, using STATE as the
                      3:    random state previously initialized by a call to gmp_randinit().
                      4:
                      5: Copyright (C) 1999, 2000  Free Software Foundation, Inc.
                      6:
                      7: This file is part of the GNU MP Library.
                      8:
                      9: The GNU MP Library is free software; you can redistribute it and/or modify
                     10: it under the terms of the GNU Lesser General Public License as published by
                     11: the Free Software Foundation; either version 2.1 of the License, or (at your
                     12: option) any later version.
                     13:
                     14: The GNU MP Library is distributed in the hope that it will be useful, but
                     15: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
                     16: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
                     17: License for more details.
                     18:
                     19: You should have received a copy of the GNU Lesser General Public License
                     20: along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
                     21: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
                     22: MA 02111-1307, USA. */
                     23:
                     24: #include "gmp.h"
                     25: #include "gmp-impl.h"
                     26:
                     27: void
                     28: #if __STDC__
                     29: mpz_urandomb (mpz_t rop, gmp_randstate_t rstate, unsigned long int nbits)
                     30: #else
                     31: mpz_urandomb (rop, rstate, nbits)
                     32:      mpz_t rop;
                     33:      gmp_randstate_t rstate;
                     34:      unsigned long int nbits;
                     35: #endif
                     36: {
                     37:   mp_ptr rp;
                     38:   mp_size_t size;
                     39:
                     40:   size = (nbits + BITS_PER_MP_LIMB - 1) / BITS_PER_MP_LIMB;
                     41:   if (ALLOC (rop) < size)
                     42:     _mpz_realloc (rop, size);
                     43:
                     44:   rp = PTR (rop);
                     45:
                     46:   _gmp_rand (rp, rstate, nbits);
                     47:   MPN_NORMALIZE (rp, size);
                     48:   SIZ (rop) = size;
                     49: }