/[pcsx2_0.9.7]/branch/r3113_0.9.7_beta/3rdparty/wxWidgets/include/wx/math.h
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Contents of /branch/r3113_0.9.7_beta/3rdparty/wxWidgets/include/wx/math.h

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Revision 32 - (show annotations) (download)
Tue Sep 7 03:29:01 2010 UTC (9 years, 5 months ago) by william
File MIME type: text/plain
File size: 3677 byte(s)
branching from upstream revision (http://pcsx2.googlecode.com/svn/trunk
): r3113 to
https://svn.netsolutions.dnsalias.com/websvn/ps2/pcsx2/pcsx2_0.9.7/branch/r3113_0.9.7_beta
1 /**
2 * Name: wx/math.h
3 * Purpose: Declarations/definitions of common math functions
4 * Author: John Labenski and others
5 * Modified by:
6 * Created: 02/02/03
7 * RCS-ID: $Id: math.h 44690 2007-03-08 04:31:24Z PC $
8 * Copyright: (c) John Labenski
9 * Licence: wxWindows licence
10 */
11
12 /* THIS IS A C FILE, DON'T USE C++ FEATURES (IN PARTICULAR COMMENTS) IN IT */
13
14 #ifndef _WX_MATH_H_
15 #define _WX_MATH_H_
16
17 #include "wx/defs.h"
18
19 #include <math.h>
20
21 #ifndef M_PI
22 #define M_PI 3.1415926535897932384626433832795
23 #endif
24
25 /* Scaling factors for various unit conversions */
26 #ifndef METRIC_CONVERSION_CONSTANT
27 #define METRIC_CONVERSION_CONSTANT 0.0393700787
28 #endif
29
30 #ifndef mm2inches
31 #define mm2inches (METRIC_CONVERSION_CONSTANT)
32 #endif
33
34 #ifndef inches2mm
35 #define inches2mm (1/(mm2inches))
36 #endif
37
38 #ifndef mm2twips
39 #define mm2twips (METRIC_CONVERSION_CONSTANT*1440)
40 #endif
41
42 #ifndef twips2mm
43 #define twips2mm (1/(mm2twips))
44 #endif
45
46 #ifndef mm2pt
47 #define mm2pt (METRIC_CONVERSION_CONSTANT*72)
48 #endif
49
50 #ifndef pt2mm
51 #define pt2mm (1/(mm2pt))
52 #endif
53
54
55 /* unknown __VISAGECC__, __SYMANTECCC__ */
56
57 #if defined(__VISUALC__) || defined(__BORLANDC__) || defined(__WATCOMC__)
58 #include <float.h>
59 #define wxFinite(x) _finite(x)
60 #elif defined(__GNUG__)||defined(__GNUWIN32__)||defined(__DJGPP__)|| \
61 defined(__SGI_CC__)||defined(__SUNCC__)||defined(__XLC__)|| \
62 defined(__HPUX__)||defined(__MWERKS__)
63 #define wxFinite(x) finite(x)
64 #else
65 #define wxFinite(x) ((x) == (x))
66 #endif
67
68
69 #if defined(__VISUALC__)||defined(__BORLAND__)
70 #define wxIsNaN(x) _isnan(x)
71 #elif defined(__GNUG__)||defined(__GNUWIN32__)||defined(__DJGPP__)|| \
72 defined(__SGI_CC__)||defined(__SUNCC__)||defined(__XLC__)|| \
73 defined(__HPUX__)||defined(__MWERKS__)
74 #define wxIsNaN(x) isnan(x)
75 #else
76 #define wxIsNaN(x) ((x) != (x))
77 #endif
78
79 #ifdef __cplusplus
80
81 #ifdef __INTELC__
82
83 inline bool wxIsSameDouble(double x, double y)
84 {
85 // VZ: this warning, given for operators==() and !=() is not wrong, as ==
86 // shouldn't be used with doubles, but we get too many of them and
87 // removing these operators is probably not a good idea
88 //
89 // Maybe we should alway compare doubles up to some "epsilon" precision
90 #pragma warning(push)
91
92 // floating-point equality and inequality comparisons are unreliable
93 #pragma warning(disable: 1572)
94
95 return x == y;
96
97 #pragma warning(pop)
98 }
99
100 #else /* !__INTELC__ */
101
102 inline bool wxIsSameDouble(double x, double y) { return x == y; }
103
104 #endif /* __INTELC__/!__INTELC__ */
105
106 inline bool wxIsNullDouble(double x) { return wxIsSameDouble(x, 0.); }
107
108 inline int wxRound(double x)
109 {
110 #if defined(HAVE_ROUND)
111 return int(round(x));
112 #else
113 return (int)(x < 0 ? x - 0.5 : x + 0.5);
114 #endif
115 }
116 #endif /* __cplusplus */
117
118
119 #if defined(__WXMSW__) && !defined(__WXWINCE__)
120 #define wxMulDivInt32( a , b , c ) ::MulDiv( a , b , c )
121 #elif defined( __WXMAC__ )
122 #define wxMulDivInt32( a , b , c ) ( (wxInt32) ( ( (wxInt64)(a) * (wxInt64)(b) ) / (wxInt64)(c) ) )
123 #else
124 #define wxMulDivInt32( a , b , c ) ((wxInt32)((a)*(((wxDouble)b)/((wxDouble)c))))
125 #endif
126
127 #if wxUSE_APPLE_IEEE
128 #ifdef __cplusplus
129 extern "C" {
130 #endif
131 /* functions from common/extended.c */
132 extern wxFloat64 ConvertFromIeeeExtended(const wxInt8 *bytes);
133 extern void ConvertToIeeeExtended(wxFloat64 num, wxInt8 *bytes);
134 #ifdef __cplusplus
135 }
136 #endif
137 #endif /* wxUSE_APPLE_IEEE */
138
139
140 #endif /* _WX_MATH_H_ */

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