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Annotation of OpenXM_contrib/gmp/mpn/generic/random.c, Revision 1.1

1.1     ! maekawa     1: /* mpn_random -- Generate random numbers.
        !             2:
        !             3: Copyright (C) 1996, 1997, 2000 Free Software Foundation, Inc.
        !             4:
        !             5: This file is part of the GNU MP Library.
        !             6:
        !             7: The GNU MP Library is free software; you can redistribute it and/or modify
        !             8: it under the terms of the GNU Lesser General Public License as published by
        !             9: the Free Software Foundation; either version 2.1 of the License, or (at your
        !            10: option) any later version.
        !            11:
        !            12: The GNU MP Library is distributed in the hope that it will be useful, but
        !            13: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
        !            14: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
        !            15: License for more details.
        !            16:
        !            17: You should have received a copy of the GNU Lesser General Public License
        !            18: along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
        !            19: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
        !            20: MA 02111-1307, USA. */
        !            21:
        !            22: #include "gmp.h"
        !            23: #include "gmp-impl.h"
        !            24: #include "urandom.h"
        !            25:
        !            26: void
        !            27: #if __STDC__
        !            28: mpn_random (mp_ptr res_ptr, mp_size_t size)
        !            29: #else
        !            30: mpn_random (res_ptr, size)
        !            31:      mp_ptr res_ptr;
        !            32:      mp_size_t size;
        !            33: #endif
        !            34: {
        !            35:   mp_size_t i;
        !            36:
        !            37:   for (i = 0; i < size; i++)
        !            38:     res_ptr[i] = urandom ();
        !            39:
        !            40:   /* Make sure the most significant limb is non-zero.  */
        !            41:   while (res_ptr[size - 1] == 0)
        !            42:     res_ptr[size - 1] = urandom ();
        !            43: }