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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/* Copyright (c) 2003 krzYszcz and others.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
#ifndef __SHARED_H__
#define __SHARED_H__
/* Microsoft Visual Studio is not C99, it does not provide stdint.h */
#ifdef _MSC_VER
typedef signed __int8 int8_t;
typedef signed __int16 int16_t;
typedef signed __int32 int32_t;
typedef signed __int64 int64_t;
typedef unsigned __int8 uint8_t;
typedef unsigned __int16 uint16_t;
typedef unsigned __int32 uint32_t;
typedef unsigned __int64 uint64_t;
#elif defined(IRIX)
typedef long int32_t;
typedef unsigned long uint32_t;
typedef short int16_t;
typedef unsigned short uint16_t;
typedef unsigned char uchar;
#else
#include <stdint.h>
#endif
/* LATER find a proper place for #include <limits.h> */
#ifdef INT_MAX
#define SHARED_INT_MAX INT_MAX
#else
#define SHARED_INT_MAX 0x7FFFFFFF
#endif
#ifdef INT_MIN
#define SHARED_INT_MIN INT_MIN
#else
#define SHARED_INT_MIN ((int)0x80000000)
#endif
/* LATER find a proper place for #include <float.h> */
#ifdef FLT_MAX
#define SHARED_FLT_MAX FLT_MAX
#else
#define SHARED_FLT_MAX 1E+36
#endif
/* this is for GNU/Linux, GNU/Hurd, GNU/kFreeBSD */
#if defined(__linux__) || defined(__FreeBSD_kernel__) || defined(__GNU__)
#include <endian.h>
# if !defined(__BYTE_ORDER) || !defined(__LITTLE_ENDIAN)
# error No byte order defined
# endif
# if __BYTE_ORDER == __LITTLE_ENDIAN
# define SHARED_HIOFFSET 1
# define SHARED_LOWOFFSET 0
# else
# define SHARED_HIOFFSET 0
# define SHARED_LOWOFFSET 1
# endif
#endif
#ifdef _WIN32
#define SHARED_HIOFFSET 1
#define SHARED_LOWOFFSET 0
#endif
#ifdef IRIX
#define SHARED_HIOFFSET 0
#define SHARED_LOWOFFSET 1
#endif
#if defined __FreeBSD__ || defined(__APPLE__)
#include <machine/endian.h>
# if BYTE_ORDER == LITTLE_ENDIAN
# define SHARED_HIOFFSET 1
# define SHARED_LOWOFFSET 0
# else
# define SHARED_HIOFFSET 0
# define SHARED_LOWOFFSET 1
# endif
#endif
#define SHARED_UNITBIT32 1572864. /* 3*(2^19) gives 32 fractional bits */
#define SHARED_UNITBIT0 6755399441055744. /* 3*(2^51), no fractional bits */
#define SHARED_UNITBIT0_HIPART 0x43380000
typedef union _shared_wrappy
{
double w_d;
int32_t w_i[2];
} t_shared_wrappy;
typedef union _shared_floatint
{
t_float fi_f;
int32_t fi_i;
} t_shared_floatint;
#define SHARED_TRUEBITS 0x3f800000 /* t_float f = 1; *(int32_t *)&f */
#define SHARED_PI 3.14159265359
#define SHARED_2PI 6.28318530718
#ifndef PD_BADFLOAT
#ifdef __i386__
#define PD_BADFLOAT(f) ((((*(unsigned int*)&(f))&0x7f800000)==0) || \
(((*(unsigned int*)&(f))&0x7f800000)==0x7f800000))
#else
#define PD_BADFLOAT(f) 0
#endif
#endif
#ifndef PD_BIGORSMALL
#ifdef __i386__
#define PD_BIGORSMALL(f) ((((*(unsigned int*)&(f))&0x60000000)==0) || \
(((*(unsigned int*)&(f))&0x60000000)==0x60000000))
#else
#define PD_BIGORSMALL(f) 0
#endif
#endif
#endif
|
