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Annotation of OpenXM_contrib/gmp/mpq/set_str.c, Revision 1.1.1.1

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: }