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Annotation of OpenXM_contrib/gmp/mpf/set_si.c, Revision 1.1.1.3

1.1       maekawa     1: /* mpf_set_si() -- Assign a float from a signed int.
                      2:
1.1.1.3 ! ohara       3: Copyright 1993, 1994, 1995, 2000, 2001, 2002 Free Software Foundation, Inc.
1.1       maekawa     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
1.1.1.2   maekawa     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
1.1       maekawa    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
1.1.1.2   maekawa    14: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
1.1       maekawa    15: License for more details.
                     16:
1.1.1.2   maekawa    17: You should have received a copy of the GNU Lesser General Public License
1.1       maekawa    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:
                     25: void
1.1.1.3 ! ohara      26: mpf_set_si (mpf_ptr dest, long val)
1.1       maekawa    27: {
1.1.1.3 ! ohara      28:   mp_size_t size;
        !            29:   mp_limb_t vl;
        !            30:
        !            31:   vl = (mp_limb_t) (unsigned long int) (val >= 0 ? val : -val);
        !            32:
        !            33:   dest->_mp_d[0] = vl & GMP_NUMB_MASK;
        !            34:   size = vl != 0;
        !            35:
        !            36: #if GMP_NAIL_BITS != 0
        !            37:   if (vl > GMP_NUMB_MAX)
1.1       maekawa    38:     {
1.1.1.3 ! ohara      39:       dest->_mp_d[1] = vl >> GMP_NUMB_BITS;
        !            40:       size = 2;
1.1       maekawa    41:     }
1.1.1.3 ! ohara      42: #endif
        !            43:
        !            44:   dest->_mp_exp = size;
        !            45:   dest->_mp_size = val >= 0 ? size : -size;
1.1       maekawa    46: }