1 /* mpz expression evaluation, simple part 2 3 Copyright 2000, 2001, 2002 Free Software Foundation, Inc. 4 5 This file is part of the GNU MP Library. 6 7 The GNU MP Library is free software; you can redistribute it and/or modify 8 it under the terms of the GNU Lesser General Public License as published by 9 the Free Software Foundation; either version 3 of the License, or (at your 10 option) any later version. 11 12 The GNU MP Library is distributed in the hope that it will be useful, but 13 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public 15 License for more details. 16 17 You should have received a copy of the GNU Lesser General Public License 18 along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */ 19 20 #include <ctype.h> 21 #include <stdio.h> 22 #include <string.h> 23 #include "gmp.h" 24 #include "expr-impl.h" 25 26 27 /* Change this to "#define TRACE(x) x" to get some traces. */ 28 #define TRACE(x) 29 30 31 /* These are macros, so need function wrappers. */ 32 static int 33 e_mpz_sgn (mpz_srcptr x) 34 { 35 return mpz_sgn (x); 36 } 37 static int 38 e_mpz_odd_p (mpz_srcptr x) 39 { 40 return mpz_odd_p (x); 41 } 42 static int 43 e_mpz_even_p (mpz_srcptr x) 44 { 45 return mpz_even_p (x); 46 } 47 48 /* These wrapped because MPEXPR_TYPE_I_ functions are expected to return 49 "int" whereas these return "unsigned long". */ 50 static void 51 e_mpz_hamdist (mpz_ptr w, mpz_srcptr x, mpz_srcptr y) 52 { 53 mpz_set_ui (w, mpz_hamdist (x, y)); 54 } 55 static void 56 e_mpz_popcount (mpz_ptr w, mpz_srcptr x) 57 { 58 mpz_set_ui (w, mpz_popcount (x)); 59 } 60 static void 61 e_mpz_scan0 (mpz_ptr w, mpz_srcptr x, unsigned long start) 62 { 63 mpz_set_ui (w, mpz_scan0 (x, start)); 64 } 65 static void 66 e_mpz_scan1 (mpz_ptr w, mpz_srcptr x, unsigned long start) 67 { 68 mpz_set_ui (w, mpz_scan1 (x, start)); 69 } 70 71 /* These wrapped because they're in-place whereas MPEXPR_TYPE_BINARY_UI 72 expects a separate source and destination. Actually the parser will 73 normally pass w==x anyway. */ 74 static void 75 e_mpz_setbit (mpz_ptr w, mpz_srcptr x, unsigned long n) 76 { 77 if (w != x) 78 mpz_set (w, x); 79 mpz_setbit (w, n); 80 } 81 static void 82 e_mpz_clrbit (mpz_ptr w, mpz_srcptr x, unsigned long n) 83 { 84 if (w != x) 85 mpz_set (w, x); 86 mpz_clrbit (w, n); 87 } 88 89 static const struct mpexpr_operator_t _mpz_expr_standard_table[] = { 90 91 { "**", (mpexpr_fun_t) mpz_pow_ui, 92 MPEXPR_TYPE_BINARY_UI | MPEXPR_TYPE_RIGHTASSOC, 220 }, 93 94 { "~", (mpexpr_fun_t) mpz_com, 95 MPEXPR_TYPE_UNARY | MPEXPR_TYPE_PREFIX, 210 }, 96 { "!", (mpexpr_fun_t) e_mpz_sgn, 97 MPEXPR_TYPE_LOGICAL_NOT | MPEXPR_TYPE_PREFIX, 210 }, 98 { "-", (mpexpr_fun_t) mpz_neg, 99 MPEXPR_TYPE_UNARY | MPEXPR_TYPE_PREFIX, 210 }, 100 101 { "*", (mpexpr_fun_t) mpz_mul, MPEXPR_TYPE_BINARY, 200 }, 102 { "/", (mpexpr_fun_t) mpz_tdiv_q, MPEXPR_TYPE_BINARY, 200 }, 103 { "%", (mpexpr_fun_t) mpz_tdiv_r, MPEXPR_TYPE_BINARY, 200 }, 104 105 { "+", (mpexpr_fun_t) mpz_add, MPEXPR_TYPE_BINARY, 190 }, 106 { "-", (mpexpr_fun_t) mpz_sub, MPEXPR_TYPE_BINARY, 190 }, 107 108 { "<<", (mpexpr_fun_t) mpz_mul_2exp, MPEXPR_TYPE_BINARY_UI, 180 }, 109 { ">>", (mpexpr_fun_t) mpz_tdiv_q_2exp, MPEXPR_TYPE_BINARY_UI, 180 }, 110 111 { "<=", (mpexpr_fun_t) mpz_cmp, MPEXPR_TYPE_CMP_LE, 170 }, 112 { "<", (mpexpr_fun_t) mpz_cmp, MPEXPR_TYPE_CMP_LT, 170 }, 113 { ">=", (mpexpr_fun_t) mpz_cmp, MPEXPR_TYPE_CMP_GE, 170 }, 114 { ">", (mpexpr_fun_t) mpz_cmp, MPEXPR_TYPE_CMP_GT, 170 }, 115 116 { "==", (mpexpr_fun_t) mpz_cmp, MPEXPR_TYPE_CMP_EQ, 160 }, 117 { "!=", (mpexpr_fun_t) mpz_cmp, MPEXPR_TYPE_CMP_NE, 160 }, 118 119 { "&", (mpexpr_fun_t) mpz_and, MPEXPR_TYPE_BINARY, 150 }, 120 { "^", (mpexpr_fun_t) mpz_xor, MPEXPR_TYPE_BINARY, 140 }, 121 { "|", (mpexpr_fun_t) mpz_ior, MPEXPR_TYPE_BINARY, 130 }, 122 { "&&", (mpexpr_fun_t) e_mpz_sgn, MPEXPR_TYPE_LOGICAL_AND, 120 }, 123 { "||", (mpexpr_fun_t) e_mpz_sgn, MPEXPR_TYPE_LOGICAL_OR, 110 }, 124 125 { ":", NULL, MPEXPR_TYPE_COLON, 101 }, 126 { "?", (mpexpr_fun_t) e_mpz_sgn, MPEXPR_TYPE_QUESTION, 100 }, 127 128 { ")", NULL, MPEXPR_TYPE_CLOSEPAREN, 4 }, 129 { "(", NULL, MPEXPR_TYPE_OPENPAREN, 3 }, 130 { ",", NULL, MPEXPR_TYPE_ARGSEP, 2 }, 131 { "$", NULL, MPEXPR_TYPE_VARIABLE, 1 }, 132 133 { "abs", (mpexpr_fun_t) mpz_abs, MPEXPR_TYPE_UNARY }, 134 { "bin", (mpexpr_fun_t) mpz_bin_ui, MPEXPR_TYPE_BINARY_UI }, 135 { "clrbit", (mpexpr_fun_t) e_mpz_clrbit, MPEXPR_TYPE_BINARY_UI }, 136 { "cmp", (mpexpr_fun_t) mpz_cmp, MPEXPR_TYPE_I_BINARY }, 137 { "cmpabs", (mpexpr_fun_t) mpz_cmpabs, MPEXPR_TYPE_I_BINARY }, 138 { "congruent_p",(mpexpr_fun_t)mpz_congruent_p, MPEXPR_TYPE_I_TERNARY }, 139 { "divisible_p",(mpexpr_fun_t)mpz_divisible_p, MPEXPR_TYPE_I_BINARY }, 140 { "even_p", (mpexpr_fun_t) e_mpz_even_p, MPEXPR_TYPE_I_UNARY }, 141 { "fib", (mpexpr_fun_t) mpz_fib_ui, MPEXPR_TYPE_UNARY_UI }, 142 { "fac", (mpexpr_fun_t) mpz_fac_ui, MPEXPR_TYPE_UNARY_UI }, 143 { "gcd", (mpexpr_fun_t) mpz_gcd, MPEXPR_TYPE_BINARY 144 | MPEXPR_TYPE_PAIRWISE }, 145 { "hamdist", (mpexpr_fun_t) e_mpz_hamdist, MPEXPR_TYPE_BINARY }, 146 { "invert", (mpexpr_fun_t) mpz_invert, MPEXPR_TYPE_BINARY }, 147 { "jacobi", (mpexpr_fun_t) mpz_jacobi, MPEXPR_TYPE_I_BINARY }, 148 { "kronecker", (mpexpr_fun_t) mpz_kronecker, MPEXPR_TYPE_I_BINARY }, 149 { "lcm", (mpexpr_fun_t) mpz_lcm, MPEXPR_TYPE_BINARY 150 | MPEXPR_TYPE_PAIRWISE }, 151 { "lucnum", (mpexpr_fun_t) mpz_lucnum_ui, MPEXPR_TYPE_UNARY_UI }, 152 { "max", (mpexpr_fun_t) mpz_cmp, MPEXPR_TYPE_MAX 153 | MPEXPR_TYPE_PAIRWISE }, 154 { "min", (mpexpr_fun_t) mpz_cmp, MPEXPR_TYPE_MIN 155 | MPEXPR_TYPE_PAIRWISE }, 156 { "nextprime", (mpexpr_fun_t) mpz_nextprime, MPEXPR_TYPE_UNARY }, 157 { "odd_p", (mpexpr_fun_t) e_mpz_odd_p, MPEXPR_TYPE_I_UNARY }, 158 { "perfect_power_p", (mpexpr_fun_t)mpz_perfect_power_p, MPEXPR_TYPE_I_UNARY}, 159 { "perfect_square_p",(mpexpr_fun_t)mpz_perfect_square_p,MPEXPR_TYPE_I_UNARY}, 160 { "popcount", (mpexpr_fun_t) e_mpz_popcount, MPEXPR_TYPE_UNARY }, 161 { "powm", (mpexpr_fun_t) mpz_powm, MPEXPR_TYPE_TERNARY }, 162 { "probab_prime_p", (mpexpr_fun_t)mpz_probab_prime_p, MPEXPR_TYPE_I_UNARY}, 163 { "root", (mpexpr_fun_t) mpz_root, MPEXPR_TYPE_BINARY_UI }, 164 { "scan0", (mpexpr_fun_t) e_mpz_scan0, MPEXPR_TYPE_BINARY_UI }, 165 { "scan1", (mpexpr_fun_t) e_mpz_scan1, MPEXPR_TYPE_BINARY_UI }, 166 { "setbit", (mpexpr_fun_t) e_mpz_setbit, MPEXPR_TYPE_BINARY_UI }, 167 { "tstbit", (mpexpr_fun_t) mpz_tstbit, MPEXPR_TYPE_I_BINARY_UI }, 168 { "sgn", (mpexpr_fun_t) e_mpz_sgn, MPEXPR_TYPE_I_UNARY }, 169 { "sqrt", (mpexpr_fun_t) mpz_sqrt, MPEXPR_TYPE_UNARY }, 170 { NULL } 171 }; 172 173 /* The table is available globally only through a pointer, so the table size 174 can change without breaking binary compatibility. */ 175 const struct mpexpr_operator_t * const mpz_expr_standard_table 176 = _mpz_expr_standard_table; 177 178 179 int 180 #if HAVE_STDARG 181 mpz_expr (mpz_ptr res, int base, const char *e, ...) 182 #else 183 mpz_expr (va_alist) 184 va_dcl 185 #endif 186 { 187 mpz_srcptr var[MPEXPR_VARIABLES]; 188 va_list ap; 189 int ret; 190 #if HAVE_STDARG 191 va_start (ap, e); 192 #else 193 mpz_ptr res; 194 int base; 195 const char *e; 196 va_start (ap); 197 res = va_arg (ap, mpz_ptr); 198 base = va_arg (ap, int); 199 e = va_arg (ap, const char *); 200 #endif 201 202 TRACE (printf ("mpz_expr(): base %d, %s\n", base, e)); 203 ret = mpexpr_va_to_var ((void **) var, ap); 204 va_end (ap); 205 206 if (ret != MPEXPR_RESULT_OK) 207 return ret; 208 209 return mpz_expr_a (mpz_expr_standard_table, res, base, e, strlen(e), var); 210 } 211