62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
/* mpq_set_str -- string to mpq conversion.
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Copyright 2001, 2002 Free Software Foundation, Inc.
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This file is part of the GNU MP Library.
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The GNU MP Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or (at your
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option) any later version.
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The GNU MP Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the GNU MP Library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA.
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*/
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#include <stdio.h>
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#include <string.h>
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#include "gmp.h"
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#include "gmp-impl.h"
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/* FIXME: Would like an mpz_set_mem (or similar) accepting a pointer and
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length so we wouldn't have to copy the numerator just to null-terminate
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it. */
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int
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mpq_set_str (mpq_ptr q, const char *str, int base)
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{
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const char *slash;
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char *num;
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size_t numlen;
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int ret;
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slash = strchr (str, '/');
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if (slash == NULL)
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{
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q->_mp_den._mp_size = 1;
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q->_mp_den._mp_d[0] = 1;
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return mpz_set_str (mpq_numref(q), str, base);
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}
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numlen = slash - str;
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num = __GMP_ALLOCATE_FUNC_TYPE (numlen+1, char);
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memcpy (num, str, numlen);
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num[numlen] = '\0';
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ret = mpz_set_str (mpq_numref(q), num, base);
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(*__gmp_free_func) (num, numlen+1);
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if (ret != 0)
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return ret;
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return mpz_set_str (mpq_denref(q), slash+1, base);
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}
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