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Annotation of OpenXM_contrib/gmp/mpz/urandomb.c, Revision 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: }