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/demos/expr/exprza.c | 108 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 108 insertions(+) create mode 100644 gmp-6.3.0/demos/expr/exprza.c (limited to 'gmp-6.3.0/demos/expr/exprza.c') diff --git a/gmp-6.3.0/demos/expr/exprza.c b/gmp-6.3.0/demos/expr/exprza.c new file mode 100644 index 0000000..eda830d --- /dev/null +++ b/gmp-6.3.0/demos/expr/exprza.c @@ -0,0 +1,108 @@ +/* mpz expression evaluation + +Copyright 2000-2002, 2004 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 +#include "gmp.h" +#include "expr-impl.h" + + +/* No need to parse '-' since that's handled as an operator. + This function also by mpq_expr_a, so it's not static. */ +size_t +mpexpr_mpz_number (mpz_ptr res, const char *e, size_t elen, int base) +{ + char *edup; + size_t i, ret; + int base_effective = (base == 0 ? 10 : base); + void *(*allocate_func) (size_t); + void (*free_func) (void *, size_t); + + i = 0; + if (e[i] == '0') + { + i++; + if (e[i] == 'x' || e[i] == 'b') + i++; + } + + for ( ; i < elen; i++) + if (! isasciidigit_in_base (e[i], base_effective)) + break; + + mp_get_memory_functions (&allocate_func, NULL, &free_func); + edup = (*allocate_func) (i+1); + memcpy (edup, e, i); + edup[i] = '\0'; + + if (mpz_set_str (res, edup, base) == 0) + ret = i; + else + ret = 0; + + (*free_func) (edup, i+1); + return ret; +} + +/* ignoring prec */ +static void +e_mpz_init (mpz_ptr z, unsigned long prec) +{ + mpz_init (z); +} + +int +mpz_expr_a (const struct mpexpr_operator_t *table, + mpz_ptr res, int base, + const char *e, size_t elen, + mpz_srcptr var[26]) +{ + struct mpexpr_parse_t p; + + p.table = table; + p.res = (mpX_ptr) res; + p.base = base; + p.e = e; + p.elen = elen; + p.var = (mpX_srcptr *) var; + + p.mpX_clear = (mpexpr_fun_one_t) mpz_clear; + p.mpX_ulong_p = (mpexpr_fun_i_unary_t) mpz_fits_ulong_p; + p.mpX_get_ui = (mpexpr_fun_get_ui_t) mpz_get_ui; + p.mpX_init = (mpexpr_fun_unary_ui_t) e_mpz_init; + p.mpX_number = (mpexpr_fun_number_t) mpexpr_mpz_number; + p.mpX_set = (mpexpr_fun_unary_t) mpz_set; + p.mpX_set_or_swap = (mpexpr_fun_unary_t) mpz_swap; + p.mpX_set_si = (mpexpr_fun_set_si_t) mpz_set_si; + p.mpX_swap = (mpexpr_fun_swap_t) mpz_swap; + + return mpexpr_evaluate (&p); +} -- cgit v1.2.3