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Annotation of OpenXM_contrib/gmp/mpbsd/min.c, Revision 1.1

1.1     ! maekawa     1: /* min(MINT) -- Do decimal input from standard input and store result in
        !             2:    MINT.
        !             3:
        !             4: Copyright (C) 1991, 1994 Free Software Foundation, Inc.
        !             5:
        !             6: This file is part of the GNU MP Library.
        !             7:
        !             8: The GNU MP Library is free software; you can redistribute it and/or modify
        !             9: it under the terms of the GNU Library General Public License as published by
        !            10: the Free Software Foundation; either version 2 of the License, or (at your
        !            11: option) any later version.
        !            12:
        !            13: The GNU MP Library is distributed in the hope that it will be useful, but
        !            14: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
        !            15: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
        !            16: License for more details.
        !            17:
        !            18: You should have received a copy of the GNU Library General Public License
        !            19: along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
        !            20: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
        !            21: MA 02111-1307, USA. */
        !            22:
        !            23: #include <stdio.h>
        !            24: #include <ctype.h>
        !            25: #include "mp.h"
        !            26: #include "gmp.h"
        !            27: #include "gmp-impl.h"
        !            28:
        !            29: void
        !            30: #if __STDC__
        !            31: min (MINT *dest)
        !            32: #else
        !            33: min (dest)
        !            34:      MINT *dest;
        !            35: #endif
        !            36: {
        !            37:   char *str;
        !            38:   size_t alloc_size, str_size;
        !            39:   int c;
        !            40:   int negative;
        !            41:   mp_size_t dest_size;
        !            42:
        !            43:   alloc_size = 100;
        !            44:   str = (char *) (*_mp_allocate_func) (alloc_size);
        !            45:   str_size = 0;
        !            46:
        !            47:   /* Skip whitespace.  */
        !            48:   do
        !            49:     c = getc (stdin);
        !            50:   while (isspace (c));
        !            51:
        !            52:   negative = 0;
        !            53:   if (c == '-')
        !            54:     {
        !            55:       negative = 1;
        !            56:       c = getc (stdin);
        !            57:     }
        !            58:
        !            59:   if (digit_value_in_base (c, 10) < 0)
        !            60:     return;                    /* error if no digits */
        !            61:
        !            62:   for (;;)
        !            63:     {
        !            64:       int dig;
        !            65:       if (str_size >= alloc_size)
        !            66:        {
        !            67:          size_t old_alloc_size = alloc_size;
        !            68:          alloc_size = alloc_size * 3 / 2;
        !            69:          str = (char *) (*_mp_reallocate_func) (str, old_alloc_size, alloc_size);
        !            70:        }
        !            71:       dig = digit_value_in_base (c, 10);
        !            72:       if (dig < 0)
        !            73:        break;
        !            74:       str[str_size++] = dig;
        !            75:       c = getc (stdin);
        !            76:     }
        !            77:
        !            78:   ungetc (c, stdin);
        !            79:
        !            80:   dest_size = str_size / __mp_bases[10].chars_per_limb + 1;
        !            81:   if (dest->_mp_alloc < dest_size)
        !            82:     _mp_realloc (dest, dest_size);
        !            83:
        !            84:   dest_size = mpn_set_str (dest->_mp_d, (unsigned char *) str, str_size, 10);
        !            85:   dest->_mp_size = negative ? -dest_size : dest_size;
        !            86:
        !            87:   (*_mp_free_func) (str, alloc_size);
        !            88:   return;
        !            89: }