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Annotation of OpenXM_contrib/gmp/mpq/set_str.c, Revision 1.1

1.1     ! ohara       1: /* mpq_set_str -- string to mpq conversion.
        !             2:
        !             3: Copyright 2001, 2002 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:
        !            23: #include <stdio.h>
        !            24: #include <string.h>
        !            25: #include "gmp.h"
        !            26: #include "gmp-impl.h"
        !            27:
        !            28:
        !            29: /* FIXME: Would like an mpz_set_mem (or similar) accepting a pointer and
        !            30:    length so we wouldn't have to copy the numerator just to null-terminate
        !            31:    it.  */
        !            32:
        !            33: int
        !            34: mpq_set_str (mpq_ptr q, const char *str, int base)
        !            35: {
        !            36:   const char  *slash;
        !            37:   char        *num;
        !            38:   size_t      numlen;
        !            39:   int         ret;
        !            40:
        !            41:   slash = strchr (str, '/');
        !            42:   if (slash == NULL)
        !            43:     {
        !            44:       q->_mp_den._mp_size = 1;
        !            45:       q->_mp_den._mp_d[0] = 1;
        !            46:
        !            47:       return mpz_set_str (mpq_numref(q), str, base);
        !            48:     }
        !            49:
        !            50:   numlen = slash - str;
        !            51:   num = __GMP_ALLOCATE_FUNC_TYPE (numlen+1, char);
        !            52:   memcpy (num, str, numlen);
        !            53:   num[numlen] = '\0';
        !            54:   ret = mpz_set_str (mpq_numref(q), num, base);
        !            55:   (*__gmp_free_func) (num, numlen+1);
        !            56:
        !            57:   if (ret != 0)
        !            58:     return ret;
        !            59:
        !            60:   return mpz_set_str (mpq_denref(q), slash+1, base);
        !            61: }