1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/* $Header: /pjproject-0.3/pjlib/include/pj/compat/high_precision.h 3 10/29/05 11:51a Bennylp $ */
#ifndef __PJ_COMPAT_HIGH_PRECISION_H__
#define __PJ_COMPAT_HIGH_PRECISION_H__
#if defined(PJ_HAS_FLOATING_POINT) && PJ_HAS_FLOATING_POINT != 0
/*
* The first choice for high precision math is to use double.
*/
# include <math.h>
typedef double pj_highprec_t;
# define PJ_HIGHPREC_VALUE_IS_ZERO(a) (a==0)
# define pj_highprec_mod(a,b) (a=fmod(a,b))
#elif defined(PJ_LINUX_KERNEL) && PJ_LINUX_KERNEL != 0
# include <asm/div64.h>
typedef pj_int64_t pj_highprec_t;
# define pj_highprec_div(a1,a2) do_div(a1,a2)
# define pj_highprec_mod(a1,a2) (a1=do_mod(a1, a2))
PJ_INLINE(pj_int64_t) do_mod( pj_int64_t a1, pj_int64_t a2)
{
return do_div(a1,a2);
}
#elif defined(PJ_HAS_INT64) && PJ_HAS_INT64 != 0
/*
* Next choice is to use 64-bit arithmatics.
*/
typedef pj_int64_t pj_highprec_t;
#else
/*
* Last, fallback to 32-bit arithmetics.
*/
typedef pj_int32_t pj_highprec_t;
#endif
/**
* @def pj_highprec_mul
* pj_highprec_mul(a1, a2) - High Precision Multiplication
* Multiply a1 and a2, and store the result in a1.
*/
#ifndef pj_highprec_mul
# define pj_highprec_mul(a1,a2) (a1 = a1 * a2)
#endif
/**
* @def pj_highprec_div
* pj_highprec_div(a1, a2) - High Precision Division
* Divide a2 from a1, and store the result in a1.
*/
#ifndef pj_highprec_div
# define pj_highprec_div(a1,a2) (a1 = a1 / a2)
#endif
/**
* @def pj_highprec_mod
* pj_highprec_mod(a1, a2) - High Precision Modulus
* Get the modulus a2 from a1, and store the result in a1.
*/
#ifndef pj_highprec_mod
# define pj_highprec_mod(a1,a2) (a1 = a1 % a2)
#endif
/**
* @def PJ_HIGHPREC_VALUE_IS_ZERO(a)
* Test if the specified high precision value is zero.
*/
#ifndef PJ_HIGHPREC_VALUE_IS_ZERO
# define PJ_HIGHPREC_VALUE_IS_ZERO(a) (a==0)
#endif
#endif /* __PJ_COMPAT_HIGH_PRECISION_H__ */
|
