diff options
author | Thomas Voss <mail@thomasvoss.com> | 2024-06-21 23:36:36 +0200 |
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committer | Thomas Voss <mail@thomasvoss.com> | 2024-06-21 23:42:26 +0200 |
commit | a89a14ef5da44684a16b204e7a70460cc8c4922a (patch) | |
tree | b23b4c6b155977909ef508fdae2f48d33d802813 /vendor/gmp-6.3.0/mpq/inp_str.c | |
parent | 1db63fcedab0b288820d66e100b1877b1a5a8851 (diff) |
Basic constant folding implementation
Diffstat (limited to 'vendor/gmp-6.3.0/mpq/inp_str.c')
-rw-r--r-- | vendor/gmp-6.3.0/mpq/inp_str.c | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/vendor/gmp-6.3.0/mpq/inp_str.c b/vendor/gmp-6.3.0/mpq/inp_str.c new file mode 100644 index 0000000..b7662bc --- /dev/null +++ b/vendor/gmp-6.3.0/mpq/inp_str.c @@ -0,0 +1,75 @@ +/* mpq_inp_str -- read an mpq from a FILE. + +Copyright 2001, 2018 Free Software Foundation, Inc. + +This file is part of the GNU MP Library. + +The GNU MP Library is free software; you can redistribute it and/or modify +it under the terms of either: + + * the GNU Lesser General Public License as published by the Free + Software Foundation; either version 3 of the License, or (at your + option) any later version. + +or + + * the GNU General Public License as published by the Free Software + Foundation; either version 2 of the License, or (at your option) any + later version. + +or both in parallel, as here. + +The GNU MP Library is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY +or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +for more details. + +You should have received copies of the GNU General Public License and the +GNU Lesser General Public License along with the GNU MP Library. If not, +see https://www.gnu.org/licenses/. */ + +#include <stdio.h> +#include <ctype.h> +#include "gmp-impl.h" + + +size_t +mpq_inp_str (mpq_ptr q, FILE *fp, int base) +{ + size_t nread; + int c; + + if (fp == NULL) + fp = stdin; + + SIZ(DEN(q)) = 1; + MPZ_NEWALLOC (DEN(q), 1)[0] = 1; + + nread = mpz_inp_str (mpq_numref(q), fp, base); + if (nread == 0) + return 0; + + c = getc (fp); + nread++; + + if (c == '/') + { + c = getc (fp); + nread++; + + nread = mpz_inp_str_nowhite (mpq_denref(q), fp, base, c, nread); + if (nread == 0) + { + SIZ(NUM(q)) = 0; + SIZ(DEN(q)) = 1; + PTR(DEN(q))[0] = 1; + } + } + else + { + ungetc (c, fp); + nread--; + } + + return nread; +} |