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Annotation of OpenXM_contrib/gmp/demos/expr/exprf.c, Revision 1.1

1.1     ! ohara       1: /* mpf expression evaluation */
        !             2:
        !             3: /*
        !             4: Copyright 2000, 2001 Free Software Foundation, Inc.
        !             5:
        !             6: This file is part of the GNU MP Library.
        !             7:
        !             8: The GNU MP Library is free software; you can redistribute it and/or modify
        !             9: it under the terms of the GNU Lesser General Public License as published by
        !            10: the Free Software Foundation; either version 2.1 of the License, or (at your
        !            11: option) any later version.
        !            12:
        !            13: The GNU MP Library is distributed in the hope that it will be useful, but
        !            14: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
        !            15: or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
        !            16: License for more details.
        !            17:
        !            18: You should have received a copy of the GNU Lesser General Public License
        !            19: along with the GNU MP Library; see the file COPYING.LIB.  If not, write to
        !            20: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
        !            21: MA 02111-1307, USA.
        !            22: */
        !            23:
        !            24: #include <stdio.h>
        !            25: #include "gmp.h"
        !            26: #include "expr-impl.h"
        !            27:
        !            28:
        !            29: /* Change this to "#define TRACE(x) x" to get some traces. */
        !            30: #define TRACE(x)
        !            31:
        !            32:
        !            33: static int
        !            34: e_mpf_sgn (mpf_srcptr x)
        !            35: {
        !            36:   return mpf_sgn (x);
        !            37: }
        !            38:
        !            39:
        !            40: static __gmp_const struct mpexpr_operator_t  _mpf_expr_standard_table[] = {
        !            41:
        !            42:   { "**",  (mpexpr_fun_t) mpf_pow_ui,
        !            43:     MPEXPR_TYPE_BINARY_UI | MPEXPR_TYPE_RIGHTASSOC,                   220 },
        !            44:
        !            45:   { "!",   (mpexpr_fun_t) e_mpf_sgn,
        !            46:     MPEXPR_TYPE_LOGICAL_NOT | MPEXPR_TYPE_PREFIX,                     210 },
        !            47:   { "-",   (mpexpr_fun_t) mpf_neg,
        !            48:     MPEXPR_TYPE_UNARY | MPEXPR_TYPE_PREFIX,                           210 },
        !            49:
        !            50:   { "*",   (mpexpr_fun_t) mpf_mul,           MPEXPR_TYPE_BINARY,      200 },
        !            51:   { "/",   (mpexpr_fun_t) mpf_div,           MPEXPR_TYPE_BINARY,      200 },
        !            52:
        !            53:   { "+",   (mpexpr_fun_t) mpf_add,           MPEXPR_TYPE_BINARY,      190 },
        !            54:   { "-",   (mpexpr_fun_t) mpf_sub,           MPEXPR_TYPE_BINARY,      190 },
        !            55:
        !            56:   { "<<",  (mpexpr_fun_t) mpf_mul_2exp,      MPEXPR_TYPE_BINARY_UI,   180 },
        !            57:   { ">>",  (mpexpr_fun_t) mpf_div_2exp,      MPEXPR_TYPE_BINARY_UI,   180 },
        !            58:
        !            59:   { "<=",  (mpexpr_fun_t) mpf_cmp,           MPEXPR_TYPE_CMP_LE,      170 },
        !            60:   { "<",   (mpexpr_fun_t) mpf_cmp,           MPEXPR_TYPE_CMP_LT,      170 },
        !            61:   { ">=",  (mpexpr_fun_t) mpf_cmp,           MPEXPR_TYPE_CMP_GE,      170 },
        !            62:   { ">",   (mpexpr_fun_t) mpf_cmp,           MPEXPR_TYPE_CMP_GT,      170 },
        !            63:
        !            64:   { "==",  (mpexpr_fun_t) mpf_cmp,           MPEXPR_TYPE_CMP_EQ,      160 },
        !            65:   { "!=",  (mpexpr_fun_t) mpf_cmp,           MPEXPR_TYPE_CMP_NE,      160 },
        !            66:
        !            67:   { "&&",  (mpexpr_fun_t) e_mpf_sgn,         MPEXPR_TYPE_LOGICAL_AND, 120 },
        !            68:   { "||",  (mpexpr_fun_t) e_mpf_sgn,         MPEXPR_TYPE_LOGICAL_OR,  110 },
        !            69:
        !            70:   { ":",   NULL,                             MPEXPR_TYPE_COLON,       101 },
        !            71:   { "?",   (mpexpr_fun_t) e_mpf_sgn,         MPEXPR_TYPE_QUESTION,    100 },
        !            72:
        !            73:   { ")",   NULL,                             MPEXPR_TYPE_CLOSEPAREN,    4 },
        !            74:   { "(",   NULL,                             MPEXPR_TYPE_OPENPAREN,     3 },
        !            75:   { ",",   NULL,                             MPEXPR_TYPE_ARGSEP,        2 },
        !            76:   { "$",   NULL,                             MPEXPR_TYPE_VARIABLE,      1 },
        !            77:
        !            78:   { "abs",      (mpexpr_fun_t) mpf_abs,          MPEXPR_TYPE_UNARY        },
        !            79:   { "ceil",     (mpexpr_fun_t) mpf_ceil,         MPEXPR_TYPE_UNARY        },
        !            80:   { "cmp",      (mpexpr_fun_t) mpf_cmp,          MPEXPR_TYPE_I_BINARY     },
        !            81:   { "eq",       (mpexpr_fun_t) mpf_eq,           MPEXPR_TYPE_I_TERNARY_UI },
        !            82:   { "floor",    (mpexpr_fun_t) mpf_floor,        MPEXPR_TYPE_UNARY        },
        !            83:   { "integer_p",(mpexpr_fun_t) mpf_integer_p,    MPEXPR_TYPE_I_UNARY      },
        !            84:   { "max",   (mpexpr_fun_t) mpf_cmp, MPEXPR_TYPE_MAX | MPEXPR_TYPE_PAIRWISE },
        !            85:   { "min",   (mpexpr_fun_t) mpf_cmp, MPEXPR_TYPE_MIN | MPEXPR_TYPE_PAIRWISE },
        !            86:   { "reldiff",  (mpexpr_fun_t) mpf_reldiff,      MPEXPR_TYPE_BINARY       },
        !            87:   { "sgn",      (mpexpr_fun_t) e_mpf_sgn,        MPEXPR_TYPE_I_UNARY      },
        !            88:   { "sqrt",     (mpexpr_fun_t) mpf_sqrt,         MPEXPR_TYPE_UNARY        },
        !            89:   { "trunc",    (mpexpr_fun_t) mpf_trunc,        MPEXPR_TYPE_UNARY        },
        !            90:
        !            91:   { NULL }
        !            92: };
        !            93:
        !            94: __gmp_const struct mpexpr_operator_t * __gmp_const mpf_expr_standard_table
        !            95: = _mpf_expr_standard_table;
        !            96:
        !            97:
        !            98: int
        !            99: #if HAVE_STDARG
        !           100: mpf_expr (mpf_ptr res, int base, __gmp_const char *e, ...)
        !           101: #else
        !           102: mpf_expr (va_alist)
        !           103:      va_dcl
        !           104: #endif
        !           105: {
        !           106:   mpf_srcptr  var[MPEXPR_VARIABLES];
        !           107:   va_list     ap;
        !           108:   int         ret;
        !           109: #if HAVE_STDARG
        !           110:   va_start (ap, e);
        !           111: #else
        !           112:   mpf_ptr           res;
        !           113:   int               base;
        !           114:   __gmp_const char  *e;
        !           115:   va_start (ap);
        !           116:   res  = va_arg (ap, mpf_ptr);
        !           117:   base = va_arg (ap, int);
        !           118:   e    = va_arg (ap, __gmp_const char *);
        !           119: #endif
        !           120:
        !           121:   TRACE (printf ("mpf_expr(): base %d, %s\n", base, e));
        !           122:   ret = mpexpr_va_to_var ((void **) var, ap);
        !           123:   va_end (ap);
        !           124:
        !           125:   if (ret != MPEXPR_RESULT_OK)
        !           126:     return ret;
        !           127:
        !           128:   return mpf_expr_a (mpf_expr_standard_table, res, base,
        !           129:                      mpf_get_prec (res), e, strlen(e), var);
        !           130: }