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 char *n_ptr; /* The pointer to the actual storage. 46 If NULL, n_value points to the inside of 47 another number (bc_multiply...) and should 48 not be "freed." */ 49 char *n_value; /* The number. Not zero char terminated. 50 May not point to the same place as n_ptr as 51 in the case of leading zeros generated. */ 52 } bc_struct; 53 54 #ifdef HAVE_CONFIG_H 55 #include "config.h" 56 #endif 57 58 #include "php.h" 59 #include "../../php_bcmath.h" 60 61 /* The base used in storing the numbers in n_value above. 62 Currently this MUST be 10. */ 63 64 #define BASE 10 65 66 /* Some useful macros and constants. */ 67 68 #define CH_VAL(c) (c - '0') 69 #define BCD_CHAR(d) (d + '0') 70 71 #ifdef MIN 72 #undef MIN 73 #undef MAX 74 #endif 75 #define MAX(a, b) ((a)>(b)?(a):(b)) 76 #define MIN(a, b) ((a)>(b)?(b):(a)) 77 #define ODD(a) ((a)&1) 78 79 #ifndef TRUE 80 #define TRUE 1 81 #define FALSE 0 82 #endif 83 84 #ifndef LONG_MAX 85 #define LONG_MAX 0x7ffffff 86 #endif 87 88 89 /* Function Prototypes */ 90 91 /* Define the _PROTOTYPE macro if it is needed. */ 92 93 #ifndef _PROTOTYPE 94 #if defined(__STDC__) || defined(PHP_WIN32) && defined(__clang__) 95 #define _PROTOTYPE(func, args) func args 96 #else 97 #define _PROTOTYPE(func, args) func() 98 #endif 99 #endif 100 101 _PROTOTYPE(void bc_init_numbers, (void)); 102 103 _PROTOTYPE(bc_num _bc_new_num_ex, (int length, int scale, int persistent)); 104 105 _PROTOTYPE(void _bc_free_num_ex, (bc_num *num, int persistent)); 106 107 _PROTOTYPE(bc_num bc_copy_num, (bc_num num)); 108 109 _PROTOTYPE(void bc_init_num, (bc_num *num)); 110 111 _PROTOTYPE(void bc_str2num, (bc_num *num, char *str, int scale)); 112 113 _PROTOTYPE(zend_string *bc_num2str_ex, (bc_num num, int scale)); 114 115 _PROTOTYPE(void bc_int2num, (bc_num *num, int val)); 116 117 _PROTOTYPE(long bc_num2long, (bc_num num)); 118 119 _PROTOTYPE(int bc_compare, (bc_num n1, bc_num n2)); 120 121 _PROTOTYPE(char bc_is_zero, (bc_num num)); 122 123 _PROTOTYPE(char bc_is_near_zero, (bc_num num, int scale)); 124 125 _PROTOTYPE(char bc_is_neg, (bc_num num)); 126 127 _PROTOTYPE(void bc_add, (bc_num n1, bc_num n2, bc_num *result, int scale_min)); 128 129 _PROTOTYPE(void bc_sub, (bc_num n1, bc_num n2, bc_num *result, int scale_min)); 130 131 _PROTOTYPE(void bc_multiply, (bc_num n1, bc_num n2, bc_num *prod, int scale)); 132 133 _PROTOTYPE(int bc_divide, (bc_num n1, bc_num n2, bc_num *quot, int scale)); 134 135 _PROTOTYPE(int bc_modulo, (bc_num num1, bc_num num2, bc_num *result, 136 int scale)); 137 138 _PROTOTYPE(int bc_divmod, (bc_num num1, bc_num num2, bc_num *quot, 139 bc_num *rem, int scale)); 140 141 _PROTOTYPE(int bc_raisemod, (bc_num base, bc_num expo, bc_num mod, 142 bc_num *result, int scale)); 143 144 _PROTOTYPE(void bc_raise, (bc_num num1, bc_num num2, bc_num *result, 145 int scale)); 146 147 _PROTOTYPE(int bc_sqrt, (bc_num *num, int scale)); 148 149 _PROTOTYPE(void bc_out_num, (bc_num num, int o_base, void (* out_char)(int), 150 int leading_zero)); 151 152 /* Prototypes needed for external utility routines. */ 153 154 _PROTOTYPE(void bc_out_of_memory, (void)); 155 156 #define bc_new_num(length, scale) _bc_new_num_ex((length), (scale), 0) 157 #define bc_free_num(num) _bc_free_num_ex((num), 0) 158 #define bc_num2str(num) bc_num2str_ex((num), (num->n_scale)) 159 160 #endif 161
