exprz.c
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上传日期:2022-08-06
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文件大小:8k
- /* mpz expression evaluation, simple part
- Copyright 2000, 2001, 2002 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 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.
- 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 Lesser General Public
- License for more details.
- You should have received a copy of the GNU Lesser General Public License
- along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
- #include <ctype.h>
- #include <stdio.h>
- #include <string.h>
- #include "gmp.h"
- #include "expr-impl.h"
- /* Change this to "#define TRACE(x) x" to get some traces. */
- #define TRACE(x)
- /* These are macros, so need function wrappers. */
- static int
- e_mpz_sgn (mpz_srcptr x)
- {
- return mpz_sgn (x);
- }
- static int
- e_mpz_odd_p (mpz_srcptr x)
- {
- return mpz_odd_p (x);
- }
- static int
- e_mpz_even_p (mpz_srcptr x)
- {
- return mpz_even_p (x);
- }
- /* These wrapped because MPEXPR_TYPE_I_ functions are expected to return
- "int" whereas these return "unsigned long". */
- static void
- e_mpz_hamdist (mpz_ptr w, mpz_srcptr x, mpz_srcptr y)
- {
- mpz_set_ui (w, mpz_hamdist (x, y));
- }
- static void
- e_mpz_popcount (mpz_ptr w, mpz_srcptr x)
- {
- mpz_set_ui (w, mpz_popcount (x));
- }
- static void
- e_mpz_scan0 (mpz_ptr w, mpz_srcptr x, unsigned long start)
- {
- mpz_set_ui (w, mpz_scan0 (x, start));
- }
- static void
- e_mpz_scan1 (mpz_ptr w, mpz_srcptr x, unsigned long start)
- {
- mpz_set_ui (w, mpz_scan1 (x, start));
- }
- /* These wrapped because they're in-place whereas MPEXPR_TYPE_BINARY_UI
- expects a separate source and destination. Actually the parser will
- normally pass w==x anyway. */
- static void
- e_mpz_setbit (mpz_ptr w, mpz_srcptr x, unsigned long n)
- {
- if (w != x)
- mpz_set (w, x);
- mpz_setbit (w, n);
- }
- static void
- e_mpz_clrbit (mpz_ptr w, mpz_srcptr x, unsigned long n)
- {
- if (w != x)
- mpz_set (w, x);
- mpz_clrbit (w, n);
- }
- static __gmp_const struct mpexpr_operator_t _mpz_expr_standard_table[] = {
- { "**", (mpexpr_fun_t) mpz_pow_ui,
- MPEXPR_TYPE_BINARY_UI | MPEXPR_TYPE_RIGHTASSOC, 220 },
- { "~", (mpexpr_fun_t) mpz_com,
- MPEXPR_TYPE_UNARY | MPEXPR_TYPE_PREFIX, 210 },
- { "!", (mpexpr_fun_t) e_mpz_sgn,
- MPEXPR_TYPE_LOGICAL_NOT | MPEXPR_TYPE_PREFIX, 210 },
- { "-", (mpexpr_fun_t) mpz_neg,
- MPEXPR_TYPE_UNARY | MPEXPR_TYPE_PREFIX, 210 },
- { "*", (mpexpr_fun_t) mpz_mul, MPEXPR_TYPE_BINARY, 200 },
- { "/", (mpexpr_fun_t) mpz_tdiv_q, MPEXPR_TYPE_BINARY, 200 },
- { "%", (mpexpr_fun_t) mpz_tdiv_r, MPEXPR_TYPE_BINARY, 200 },
- { "+", (mpexpr_fun_t) mpz_add, MPEXPR_TYPE_BINARY, 190 },
- { "-", (mpexpr_fun_t) mpz_sub, MPEXPR_TYPE_BINARY, 190 },
- { "<<", (mpexpr_fun_t) mpz_mul_2exp, MPEXPR_TYPE_BINARY_UI, 180 },
- { ">>", (mpexpr_fun_t) mpz_tdiv_q_2exp, MPEXPR_TYPE_BINARY_UI, 180 },
- { "<=", (mpexpr_fun_t) mpz_cmp, MPEXPR_TYPE_CMP_LE, 170 },
- { "<", (mpexpr_fun_t) mpz_cmp, MPEXPR_TYPE_CMP_LT, 170 },
- { ">=", (mpexpr_fun_t) mpz_cmp, MPEXPR_TYPE_CMP_GE, 170 },
- { ">", (mpexpr_fun_t) mpz_cmp, MPEXPR_TYPE_CMP_GT, 170 },
- { "==", (mpexpr_fun_t) mpz_cmp, MPEXPR_TYPE_CMP_EQ, 160 },
- { "!=", (mpexpr_fun_t) mpz_cmp, MPEXPR_TYPE_CMP_NE, 160 },
- { "&", (mpexpr_fun_t) mpz_and, MPEXPR_TYPE_BINARY, 150 },
- { "^", (mpexpr_fun_t) mpz_xor, MPEXPR_TYPE_BINARY, 140 },
- { "|", (mpexpr_fun_t) mpz_ior, MPEXPR_TYPE_BINARY, 130 },
- { "&&", (mpexpr_fun_t) e_mpz_sgn, MPEXPR_TYPE_LOGICAL_AND, 120 },
- { "||", (mpexpr_fun_t) e_mpz_sgn, MPEXPR_TYPE_LOGICAL_OR, 110 },
- { ":", NULL, MPEXPR_TYPE_COLON, 101 },
- { "?", (mpexpr_fun_t) e_mpz_sgn, MPEXPR_TYPE_QUESTION, 100 },
- { ")", NULL, MPEXPR_TYPE_CLOSEPAREN, 4 },
- { "(", NULL, MPEXPR_TYPE_OPENPAREN, 3 },
- { ",", NULL, MPEXPR_TYPE_ARGSEP, 2 },
- { "$", NULL, MPEXPR_TYPE_VARIABLE, 1 },
- { "abs", (mpexpr_fun_t) mpz_abs, MPEXPR_TYPE_UNARY },
- { "bin", (mpexpr_fun_t) mpz_bin_ui, MPEXPR_TYPE_BINARY_UI },
- { "clrbit", (mpexpr_fun_t) e_mpz_clrbit, MPEXPR_TYPE_BINARY_UI },
- { "cmp", (mpexpr_fun_t) mpz_cmp, MPEXPR_TYPE_I_BINARY },
- { "cmpabs", (mpexpr_fun_t) mpz_cmpabs, MPEXPR_TYPE_I_BINARY },
- { "congruent_p",(mpexpr_fun_t)mpz_congruent_p, MPEXPR_TYPE_I_TERNARY },
- { "divisible_p",(mpexpr_fun_t)mpz_divisible_p, MPEXPR_TYPE_I_BINARY },
- { "even_p", (mpexpr_fun_t) e_mpz_even_p, MPEXPR_TYPE_I_UNARY },
- { "fib", (mpexpr_fun_t) mpz_fib_ui, MPEXPR_TYPE_UNARY_UI },
- { "fac", (mpexpr_fun_t) mpz_fac_ui, MPEXPR_TYPE_UNARY_UI },
- { "gcd", (mpexpr_fun_t) mpz_gcd, MPEXPR_TYPE_BINARY
- | MPEXPR_TYPE_PAIRWISE },
- { "hamdist", (mpexpr_fun_t) e_mpz_hamdist, MPEXPR_TYPE_BINARY },
- { "invert", (mpexpr_fun_t) mpz_invert, MPEXPR_TYPE_BINARY },
- { "jacobi", (mpexpr_fun_t) mpz_jacobi, MPEXPR_TYPE_I_BINARY },
- { "kronecker", (mpexpr_fun_t) mpz_kronecker, MPEXPR_TYPE_I_BINARY },
- { "lcm", (mpexpr_fun_t) mpz_lcm, MPEXPR_TYPE_BINARY
- | MPEXPR_TYPE_PAIRWISE },
- { "lucnum", (mpexpr_fun_t) mpz_lucnum_ui, MPEXPR_TYPE_UNARY_UI },
- { "max", (mpexpr_fun_t) mpz_cmp, MPEXPR_TYPE_MAX
- | MPEXPR_TYPE_PAIRWISE },
- { "min", (mpexpr_fun_t) mpz_cmp, MPEXPR_TYPE_MIN
- | MPEXPR_TYPE_PAIRWISE },
- { "nextprime", (mpexpr_fun_t) mpz_nextprime, MPEXPR_TYPE_UNARY },
- { "odd_p", (mpexpr_fun_t) e_mpz_odd_p, MPEXPR_TYPE_I_UNARY },
- { "perfect_power_p", (mpexpr_fun_t)mpz_perfect_power_p, MPEXPR_TYPE_I_UNARY},
- { "perfect_square_p",(mpexpr_fun_t)mpz_perfect_square_p,MPEXPR_TYPE_I_UNARY},
- { "popcount", (mpexpr_fun_t) e_mpz_popcount, MPEXPR_TYPE_UNARY },
- { "powm", (mpexpr_fun_t) mpz_powm, MPEXPR_TYPE_TERNARY },
- { "probab_prime_p", (mpexpr_fun_t)mpz_probab_prime_p, MPEXPR_TYPE_I_UNARY},
- { "root", (mpexpr_fun_t) mpz_root, MPEXPR_TYPE_BINARY_UI },
- { "scan0", (mpexpr_fun_t) e_mpz_scan0, MPEXPR_TYPE_BINARY_UI },
- { "scan1", (mpexpr_fun_t) e_mpz_scan1, MPEXPR_TYPE_BINARY_UI },
- { "setbit", (mpexpr_fun_t) e_mpz_setbit, MPEXPR_TYPE_BINARY_UI },
- { "tstbit", (mpexpr_fun_t) mpz_tstbit, MPEXPR_TYPE_I_BINARY_UI },
- { "sgn", (mpexpr_fun_t) e_mpz_sgn, MPEXPR_TYPE_I_UNARY },
- { "sqrt", (mpexpr_fun_t) mpz_sqrt, MPEXPR_TYPE_UNARY },
- { NULL }
- };
- /* The table is available globally only through a pointer, so the table size
- can change without breaking binary compatibility. */
- __gmp_const struct mpexpr_operator_t * __gmp_const mpz_expr_standard_table
- = _mpz_expr_standard_table;
- int
- #if HAVE_STDARG
- mpz_expr (mpz_ptr res, int base, __gmp_const char *e, ...)
- #else
- mpz_expr (va_alist)
- va_dcl
- #endif
- {
- mpz_srcptr var[MPEXPR_VARIABLES];
- va_list ap;
- int ret;
- #if HAVE_STDARG
- va_start (ap, e);
- #else
- mpz_ptr res;
- int base;
- __gmp_const char *e;
- va_start (ap);
- res = va_arg (ap, mpz_ptr);
- base = va_arg (ap, int);
- e = va_arg (ap, __gmp_const char *);
- #endif
- TRACE (printf ("mpz_expr(): base %d, %sn", base, e));
- ret = mpexpr_va_to_var ((void **) var, ap);
- va_end (ap);
- if (ret != MPEXPR_RESULT_OK)
- return ret;
- return mpz_expr_a (mpz_expr_standard_table, res, base, e, strlen(e), var);
- }