xref: /PHP-8.1/ext/standard/php_math.h (revision 01b3fc03)
1 /*
2    +----------------------------------------------------------------------+
3    | Copyright (c) The PHP Group                                          |
4    +----------------------------------------------------------------------+
5    | This source file is subject to version 3.01 of the PHP license,      |
6    | that is bundled with this package in the file LICENSE, and is        |
7    | available through the world-wide-web at the following url:           |
8    | https://www.php.net/license/3_01.txt                                 |
9    | If you did not receive a copy of the PHP license and are unable to   |
10    | obtain it through the world-wide-web, please send a note to          |
11    | license@php.net so we can mail you a copy immediately.               |
12    +----------------------------------------------------------------------+
13    | Authors: Jim Winstead <jimw@php.net>                                 |
14    |          Stig Sæther Bakken <ssb@php.net>                            |
15    +----------------------------------------------------------------------+
16 */
17 
18 #ifndef PHP_MATH_H
19 #define PHP_MATH_H
20 
21 PHPAPI double _php_math_round(double value, int places, int mode);
22 PHPAPI zend_string *_php_math_number_format(double d, int dec, char dec_point, char thousand_sep);
23 PHPAPI zend_string *_php_math_number_format_ex(double d, int dec, const char *dec_point, size_t dec_point_len, const char *thousand_sep, size_t thousand_sep_len);
24 PHPAPI zend_string * _php_math_longtobase(zend_long arg, int base);
25 PHPAPI zend_long _php_math_basetolong(zval *arg, int base);
26 PHPAPI void _php_math_basetozval(zend_string *str, int base, zval *ret);
27 PHPAPI zend_string * _php_math_zvaltobase(zval *arg, int base);
28 
29 #include <math.h>
30 
31 #ifndef M_E
32 #define M_E            2.7182818284590452354   /* e */
33 #endif
34 
35 #ifndef M_LOG2E
36 #define M_LOG2E        1.4426950408889634074   /* log_2 e */
37 #endif
38 
39 #ifndef M_LOG10E
40 #define M_LOG10E       0.43429448190325182765  /* log_10 e */
41 #endif
42 
43 #ifndef M_LN2
44 #define M_LN2          0.69314718055994530942  /* log_e 2 */
45 #endif
46 
47 #ifndef M_LN10
48 #define M_LN10         2.30258509299404568402  /* log_e 10 */
49 #endif
50 
51 #ifndef M_PI
52 #define M_PI           3.14159265358979323846  /* pi */
53 #endif
54 
55 #ifndef M_PI_2
56 #define M_PI_2         1.57079632679489661923  /* pi/2 */
57 #endif
58 
59 #ifndef M_PI_4
60 #define M_PI_4         0.78539816339744830962  /* pi/4 */
61 #endif
62 
63 #ifndef M_1_PI
64 #define M_1_PI         0.31830988618379067154  /* 1/pi */
65 #endif
66 
67 #ifndef M_2_PI
68 #define M_2_PI         0.63661977236758134308  /* 2/pi */
69 #endif
70 
71 #ifndef M_SQRTPI
72 #define M_SQRTPI       1.77245385090551602729  /* sqrt(pi) */
73 #endif
74 
75 #ifndef M_2_SQRTPI
76 #define M_2_SQRTPI     1.12837916709551257390  /* 2/sqrt(pi) */
77 #endif
78 
79 #ifndef M_LNPI
80 #define M_LNPI         1.14472988584940017414  /* ln(pi) */
81 #endif
82 
83 #ifndef M_EULER
84 #define M_EULER        0.57721566490153286061 /* Euler constant */
85 #endif
86 
87 #ifndef M_SQRT2
88 #define M_SQRT2        1.41421356237309504880  /* sqrt(2) */
89 #endif
90 
91 #ifndef M_SQRT1_2
92 #define M_SQRT1_2      0.70710678118654752440  /* 1/sqrt(2) */
93 #endif
94 
95 #ifndef M_SQRT3
96 #define M_SQRT3	       1.73205080756887729352  /* sqrt(3) */
97 #endif
98 
99 /* Define rounding modes (all are round-to-nearest) */
100 #ifndef PHP_ROUND_HALF_UP
101 #define PHP_ROUND_HALF_UP        0x01    /* Arithmetic rounding, up == away from zero */
102 #endif
103 
104 #ifndef PHP_ROUND_HALF_DOWN
105 #define PHP_ROUND_HALF_DOWN      0x02    /* Down == towards zero */
106 #endif
107 
108 #ifndef PHP_ROUND_HALF_EVEN
109 #define PHP_ROUND_HALF_EVEN      0x03    /* Banker's rounding */
110 #endif
111 
112 #ifndef PHP_ROUND_HALF_ODD
113 #define PHP_ROUND_HALF_ODD       0x04
114 #endif
115 
116 #endif /* PHP_MATH_H */
117