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GAP 4.8.9 installation with standard packages -- copy to your CoCalc project to get it

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/* Implementation specifics for expression evaluation.

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Copyright 2000-2002, 2004 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 either:

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  * the GNU Lesser General Public License as published by the Free

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    Software Foundation; either version 3 of the License, or (at your

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    option) any later version.

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or

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  * the GNU General Public License as published by the Free Software

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    Foundation; either version 2 of the License, or (at your option) any

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    later version.

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or both in parallel, as here.

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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 General Public License

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for more details.

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You should have received copies of the GNU General Public License and the

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GNU Lesser General Public License along with the GNU MP Library.  If not,

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see https://www.gnu.org/licenses/.  */

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#include <stdarg.h>

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#include "expr.h"

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#define isasciidigit(c)   (isascii (c) && isdigit (c))

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#define isasciicsym(c)    (isascii (c) && (isalnum(c) || (c) == '_'))

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#define isasciidigit_in_base(c,base)                    \

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  (isascii (c)                                          \

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   && ((isdigit (c) && (c)-'0' < (base))                \

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       || (isupper (c) && (c)-'A'+10 < (base))          \

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       || (islower (c) && (c)-'a'+10 < (base))))

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union mpX_t {

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  mpz_t   z;

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  mpq_t   q;

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  mpf_t   f;

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};

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typedef union mpX_t *mpX_ptr;

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typedef const union mpX_t *mpX_srcptr;

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typedef void (*mpexpr_fun_one_t) (mpX_ptr);

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typedef unsigned long (*mpexpr_fun_ui_one_t) (mpX_ptr);

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typedef void (*mpexpr_fun_0ary_t) (mpX_ptr);

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typedef int  (*mpexpr_fun_i_0ary_t) (void);

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typedef void (*mpexpr_fun_unary_t) (mpX_ptr, mpX_srcptr);

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typedef void (*mpexpr_fun_unary_ui_t) (mpX_ptr, unsigned long);

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typedef int  (*mpexpr_fun_i_unary_t) (mpX_srcptr);

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typedef int  (*mpexpr_fun_i_unary_ui_t) (unsigned long);

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typedef void (*mpexpr_fun_binary_t) (mpX_ptr, mpX_srcptr, mpX_srcptr);

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typedef void (*mpexpr_fun_binary_ui_t) (mpX_ptr, mpX_srcptr, unsigned long);

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typedef int  (*mpexpr_fun_i_binary_t) (mpX_srcptr, mpX_srcptr);

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typedef int  (*mpexpr_fun_i_binary_ui_t) (mpX_srcptr, unsigned long);

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typedef void (*mpexpr_fun_ternary_t) (mpX_ptr, mpX_srcptr, mpX_srcptr, mpX_srcptr);

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typedef void (*mpexpr_fun_ternary_ui_t) (mpX_ptr, mpX_srcptr, mpX_srcptr, unsigned long);

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typedef int (*mpexpr_fun_i_ternary_t) (mpX_srcptr, mpX_srcptr, mpX_srcptr);

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typedef int (*mpexpr_fun_i_ternary_ui_t) (mpX_srcptr, mpX_srcptr, unsigned long);

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typedef size_t (*mpexpr_fun_number_t) (mpX_ptr, const char *str, size_t len, int base);

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typedef void (*mpexpr_fun_swap_t) (mpX_ptr, mpX_ptr);

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typedef unsigned long (*mpexpr_fun_get_ui_t) (mpX_srcptr);

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typedef void (*mpexpr_fun_set_si_t) (mpX_srcptr, long);

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struct mpexpr_control_t {

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  const struct mpexpr_operator_t  *op;

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  int                             argcount;

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};

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#define MPEXPR_VARIABLES  26

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struct mpexpr_parse_t {

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  const struct mpexpr_operator_t  *table;

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  mpX_ptr                         res;

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  int                             base;

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  unsigned long                   prec;

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  const char                      *e;

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  size_t                          elen;

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  mpX_srcptr                      *var;

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  int                             error_code;

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  int                             token;

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  const struct mpexpr_operator_t  *token_op;

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  union mpX_t                     *data_stack;

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  int                             data_top;

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  int                             data_alloc;

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  int                             data_inited;

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  struct mpexpr_control_t         *control_stack;

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  int                             control_top;

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  int                             control_alloc;

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  mpexpr_fun_0ary_t               mpX_clear;

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  mpexpr_fun_i_unary_t            mpX_ulong_p;

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  mpexpr_fun_get_ui_t             mpX_get_ui;

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  mpexpr_fun_unary_ui_t           mpX_init;

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  mpexpr_fun_number_t             mpX_number;

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  mpexpr_fun_unary_t              mpX_set;

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  mpexpr_fun_unary_t              mpX_set_or_swap;

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  mpexpr_fun_set_si_t             mpX_set_si;

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  mpexpr_fun_swap_t               mpX_swap;

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};

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int mpexpr_evaluate (struct mpexpr_parse_t *p);

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int mpexpr_va_to_var (void *var[], va_list ap);

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size_t mpexpr_mpz_number (mpz_ptr res, const char *e, size_t elen, int base);

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