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1.1 misho 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