From 11da511c784eca003deb90c23570f0873954e0de Mon Sep 17 00:00:00 2001 From: Duncan Wilkie Date: Sat, 18 Nov 2023 06:11:09 -0600 Subject: Initial commit. --- gmp-6.3.0/mpq/get_str.c | 80 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 80 insertions(+) create mode 100644 gmp-6.3.0/mpq/get_str.c (limited to 'gmp-6.3.0/mpq/get_str.c') diff --git a/gmp-6.3.0/mpq/get_str.c b/gmp-6.3.0/mpq/get_str.c new file mode 100644 index 0000000..d0cfb58 --- /dev/null +++ b/gmp-6.3.0/mpq/get_str.c @@ -0,0 +1,80 @@ +/* mpq_get_str -- mpq to string conversion. + +Copyright 2001, 2002, 2006, 2011, 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 +#include +#include "gmp-impl.h" +#include "longlong.h" + +char * +mpq_get_str (char *str, int base, mpq_srcptr q) +{ + size_t str_alloc, len; + + if (base > 62 || base < -36) + return NULL; + + str_alloc = 0; + if (str == NULL) + { + /* This is an overestimate since we don't bother checking how much of + the high limbs of num and den are used. +2 for rounding up the + chars per bit of num and den. +3 for sign, slash and '\0'. */ + if (ABS(base) < 2) + base = 10; + DIGITS_IN_BASE_PER_LIMB (str_alloc, ABSIZ(NUM(q)) + SIZ(DEN(q)), ABS(base)); + str_alloc += 6; + + str = __GMP_ALLOCATE_FUNC_TYPE (str_alloc, char); + } + + mpz_get_str (str, base, mpq_numref(q)); + len = strlen (str); + if (! MPZ_EQUAL_1_P (mpq_denref (q))) + { + str[len++] = '/'; + mpz_get_str (str+len, base, mpq_denref(q)); + len += strlen (str+len); + } + + ASSERT (len == strlen(str)); + ASSERT (str_alloc == 0 || len+1 <= str_alloc); + ASSERT (len+1 <= 3 + /* size recommended to applications */ + (ABS(base) < 2 ? + mpz_sizeinbase (mpq_numref(q), 10) + + mpz_sizeinbase (mpq_denref(q), 10) + : mpz_sizeinbase (mpq_numref(q), ABS(base)) + + mpz_sizeinbase (mpq_denref(q), ABS(base)))); + + if (str_alloc != 0) + __GMP_REALLOCATE_FUNC_MAYBE_TYPE (str, str_alloc, len+1, char); + + return str; +} -- cgit v1.2.3