1 /* bcmath.h: bcmath library header. */ 2 /* 3 Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc. 4 Copyright (C) 2000 Philip A. Nelson 5 6 This library is free software; you can redistribute it and/or 7 modify it under the terms of the GNU Lesser General Public 8 License as published by the Free Software Foundation; either 9 version 2 of the License, or (at your option) any later version. 10 11 This library is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Lesser General Public License for more details. (COPYING.LIB) 15 16 You should have received a copy of the GNU Lesser General Public 17 License along with this library; if not, write to: 18 19 The Free Software Foundation, Inc. 20 59 Temple Place, Suite 330 21 Boston, MA 02111-1307 USA. 22 23 You may contact the author by: 24 e-mail: philnelson@acm.org 25 us-mail: Philip A. Nelson 26 Computer Science Department, 9062 27 Western Washington University 28 Bellingham, WA 98226-9062 29 30 *************************************************************************/ 31 32 #ifndef _BCMATH_H_ 33 #define _BCMATH_H_ 34 35 typedef enum {PLUS, MINUS} sign; 36 37 typedef struct bc_struct *bc_num; 38 39 typedef struct bc_struct 40 { 41 sign n_sign; 42 int n_len; /* The number of digits before the decimal point. */ 43 int n_scale; /* The number of digits after the decimal point. */ 44 int n_refs; /* The number of pointers to this number. */ 45 bc_num n_next; /* Linked list for available list. */ 46 char *n_ptr; /* The pointer to the actual storage. 47 If NULL, n_value points to the inside of 48 another number (bc_multiply...) and should 49 not be "freed." */ 50 char *n_value; /* The number. Not zero char terminated. 51 May not point to the same place as n_ptr as 52 in the case of leading zeros generated. */ 53 } bc_struct; 54 55 #ifdef HAVE_CONFIG_H 56 #include "config.h" 57 #endif 58 59 #include "php.h" 60 #include "../../php_bcmath.h" 61 62 /* The base used in storing the numbers in n_value above. 63 Currently this MUST be 10. */ 64 65 #define BASE 10 66 67 /* Some useful macros and constants. */ 68 69 #define CH_VAL(c) (c - '0') 70 #define BCD_CHAR(d) (d + '0') 71 72 #ifdef MIN 73 #undef MIN 74 #undef MAX 75 #endif 76 #define MAX(a, b) ((a)>(b)?(a):(b)) 77 #define MIN(a, b) ((a)>(b)?(b):(a)) 78 #define ODD(a) ((a)&1) 79 80 #ifndef TRUE 81 #define TRUE 1 82 #define FALSE 0 83 #endif 84 85 #ifndef LONG_MAX 86 #define LONG_MAX 0x7ffffff 87 #endif 88 89 90 /* Function Prototypes */ 91 92 /* Define the _PROTOTYPE macro if it is needed. */ 93 94 #ifndef _PROTOTYPE 95 #ifdef __STDC__ 96 #define _PROTOTYPE(func, args) func args 97 #else 98 #define _PROTOTYPE(func, args) func() 99 #endif 100 #endif 101 102 _PROTOTYPE(void bc_init_numbers, (TSRMLS_D)); 103 104 _PROTOTYPE(bc_num _bc_new_num_ex, (int length, int scale, int persistent)); 105 106 _PROTOTYPE(void _bc_free_num_ex, (bc_num *num, int persistent)); 107 108 _PROTOTYPE(bc_num bc_copy_num, (bc_num num)); 109 110 _PROTOTYPE(void bc_init_num, (bc_num *num TSRMLS_DC)); 111 112 _PROTOTYPE(void bc_str2num, (bc_num *num, char *str, int scale TSRMLS_DC)); 113 114 _PROTOTYPE(char *bc_num2str, (bc_num num)); 115 116 _PROTOTYPE(void bc_int2num, (bc_num *num, int val)); 117 118 _PROTOTYPE(long bc_num2long, (bc_num num)); 119 120 _PROTOTYPE(int bc_compare, (bc_num n1, bc_num n2)); 121 122 _PROTOTYPE(char bc_is_zero, (bc_num num TSRMLS_DC)); 123 124 _PROTOTYPE(char bc_is_near_zero, (bc_num num, int scale)); 125 126 _PROTOTYPE(char bc_is_neg, (bc_num num)); 127 128 _PROTOTYPE(void bc_add, (bc_num n1, bc_num n2, bc_num *result, int scale_min)); 129 130 _PROTOTYPE(void bc_sub, (bc_num n1, bc_num n2, bc_num *result, int scale_min)); 131 132 _PROTOTYPE(void bc_multiply, (bc_num n1, bc_num n2, bc_num *prod, int scale TSRMLS_DC)); 133 134 _PROTOTYPE(int bc_divide, (bc_num n1, bc_num n2, bc_num *quot, int scale TSRMLS_DC)); 135 136 _PROTOTYPE(int bc_modulo, (bc_num num1, bc_num num2, bc_num *result, 137 int scale TSRMLS_DC)); 138 139 _PROTOTYPE(int bc_divmod, (bc_num num1, bc_num num2, bc_num *quot, 140 bc_num *rem, int scale TSRMLS_DC)); 141 142 _PROTOTYPE(int bc_raisemod, (bc_num base, bc_num expo, bc_num mod, 143 bc_num *result, int scale TSRMLS_DC)); 144 145 _PROTOTYPE(void bc_raise, (bc_num num1, bc_num num2, bc_num *result, 146 int scale TSRMLS_DC)); 147 148 _PROTOTYPE(int bc_sqrt, (bc_num *num, int scale TSRMLS_DC)); 149 150 _PROTOTYPE(void bc_out_num, (bc_num num, int o_base, void (* out_char)(int), 151 int leading_zero TSRMLS_DC)); 152 153 /* Prototypes needed for external utility routines. */ 154 155 _PROTOTYPE(void bc_rt_warn, (char *mesg ,...)); 156 _PROTOTYPE(void bc_rt_error, (char *mesg ,...)); 157 _PROTOTYPE(void bc_out_of_memory, (void)); 158 159 #define bc_new_num(length, scale) _bc_new_num_ex((length), (scale), 0) 160 #define bc_free_num(num) _bc_free_num_ex((num), 0) 161 162 #endif 163
