186d7f5d3SJohn Marino /* mpq_set_str -- string to mpq conversion.
286d7f5d3SJohn Marino
386d7f5d3SJohn Marino Copyright 2001, 2002 Free Software Foundation, Inc.
486d7f5d3SJohn Marino
586d7f5d3SJohn Marino This file is part of the GNU MP Library.
686d7f5d3SJohn Marino
786d7f5d3SJohn Marino The GNU MP Library is free software; you can redistribute it and/or modify
886d7f5d3SJohn Marino it under the terms of the GNU Lesser General Public License as published by
986d7f5d3SJohn Marino the Free Software Foundation; either version 3 of the License, or (at your
1086d7f5d3SJohn Marino option) any later version.
1186d7f5d3SJohn Marino
1286d7f5d3SJohn Marino The GNU MP Library is distributed in the hope that it will be useful, but
1386d7f5d3SJohn Marino WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
1486d7f5d3SJohn Marino or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
1586d7f5d3SJohn Marino License for more details.
1686d7f5d3SJohn Marino
1786d7f5d3SJohn Marino You should have received a copy of the GNU Lesser General Public License
1886d7f5d3SJohn Marino along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
1986d7f5d3SJohn Marino
2086d7f5d3SJohn Marino #include <stdio.h>
2186d7f5d3SJohn Marino #include <string.h>
2286d7f5d3SJohn Marino #include "gmp.h"
2386d7f5d3SJohn Marino #include "gmp-impl.h"
2486d7f5d3SJohn Marino
2586d7f5d3SJohn Marino
2686d7f5d3SJohn Marino /* FIXME: Would like an mpz_set_mem (or similar) accepting a pointer and
2786d7f5d3SJohn Marino length so we wouldn't have to copy the numerator just to null-terminate
2886d7f5d3SJohn Marino it. */
2986d7f5d3SJohn Marino
3086d7f5d3SJohn Marino int
mpq_set_str(mpq_ptr q,const char * str,int base)3186d7f5d3SJohn Marino mpq_set_str (mpq_ptr q, const char *str, int base)
3286d7f5d3SJohn Marino {
3386d7f5d3SJohn Marino const char *slash;
3486d7f5d3SJohn Marino char *num;
3586d7f5d3SJohn Marino size_t numlen;
3686d7f5d3SJohn Marino int ret;
3786d7f5d3SJohn Marino
3886d7f5d3SJohn Marino slash = strchr (str, '/');
3986d7f5d3SJohn Marino if (slash == NULL)
4086d7f5d3SJohn Marino {
4186d7f5d3SJohn Marino q->_mp_den._mp_size = 1;
4286d7f5d3SJohn Marino q->_mp_den._mp_d[0] = 1;
4386d7f5d3SJohn Marino
4486d7f5d3SJohn Marino return mpz_set_str (mpq_numref(q), str, base);
4586d7f5d3SJohn Marino }
4686d7f5d3SJohn Marino
4786d7f5d3SJohn Marino numlen = slash - str;
4886d7f5d3SJohn Marino num = __GMP_ALLOCATE_FUNC_TYPE (numlen+1, char);
4986d7f5d3SJohn Marino memcpy (num, str, numlen);
5086d7f5d3SJohn Marino num[numlen] = '\0';
5186d7f5d3SJohn Marino ret = mpz_set_str (mpq_numref(q), num, base);
5286d7f5d3SJohn Marino (*__gmp_free_func) (num, numlen+1);
5386d7f5d3SJohn Marino
5486d7f5d3SJohn Marino if (ret != 0)
5586d7f5d3SJohn Marino return ret;
5686d7f5d3SJohn Marino
5786d7f5d3SJohn Marino return mpz_set_str (mpq_denref(q), slash+1, base);
5886d7f5d3SJohn Marino }
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