3f66f6a5b3
This keyword is not expanded by Git which means it's not replaced with the correct revision value in the releases made using git-based scripts and it's confusing to have lines with unexpanded "$Id$" in the released files. As expanding them with Git is not that simple (it could be done with git archive and export-subst attribute) and there are not many benefits in having them in the first place, just remove all these lines. If nothing else, this will make an eventual transition to Git simpler. Closes #14487. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74602 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
163 lines
4.4 KiB
C++
163 lines
4.4 KiB
C++
/**
|
|
* Name: wx/math.h
|
|
* Purpose: Declarations/definitions of common math functions
|
|
* Author: John Labenski and others
|
|
* Modified by:
|
|
* Created: 02/02/03
|
|
* Copyright: (c) John Labenski
|
|
* Licence: wxWindows licence
|
|
*/
|
|
|
|
/* THIS IS A C FILE, DON'T USE C++ FEATURES (IN PARTICULAR COMMENTS) IN IT */
|
|
|
|
#ifndef _WX_MATH_H_
|
|
#define _WX_MATH_H_
|
|
|
|
#include "wx/defs.h"
|
|
|
|
#include <math.h>
|
|
|
|
#ifndef M_PI
|
|
#define M_PI 3.1415926535897932384626433832795
|
|
#endif
|
|
|
|
/* Scaling factors for various unit conversions: 1 inch = 2.54 cm */
|
|
#ifndef METRIC_CONVERSION_CONSTANT
|
|
#define METRIC_CONVERSION_CONSTANT (1/25.4)
|
|
#endif
|
|
|
|
#ifndef mm2inches
|
|
#define mm2inches (METRIC_CONVERSION_CONSTANT)
|
|
#endif
|
|
|
|
#ifndef inches2mm
|
|
#define inches2mm (1/(mm2inches))
|
|
#endif
|
|
|
|
#ifndef mm2twips
|
|
#define mm2twips (METRIC_CONVERSION_CONSTANT*1440)
|
|
#endif
|
|
|
|
#ifndef twips2mm
|
|
#define twips2mm (1/(mm2twips))
|
|
#endif
|
|
|
|
#ifndef mm2pt
|
|
#define mm2pt (METRIC_CONVERSION_CONSTANT*72)
|
|
#endif
|
|
|
|
#ifndef pt2mm
|
|
#define pt2mm (1/(mm2pt))
|
|
#endif
|
|
|
|
|
|
/* unknown __VISAGECC__, __SYMANTECCC__ */
|
|
|
|
#if defined(__VISUALC__) || defined(__BORLANDC__) || defined(__WATCOMC__)
|
|
#include <float.h>
|
|
#define wxFinite(x) _finite(x)
|
|
#elif defined(__MINGW64__) || defined(__clang__)
|
|
/*
|
|
add more compilers with C99 support here: using C99 isfinite() is
|
|
preferable to using BSD-ish finite()
|
|
*/
|
|
#if defined(_GLIBCXX_CMATH) || defined(_LIBCPP_CMATH)
|
|
// these <cmath> headers #undef isfinite
|
|
#define wxFinite(x) std::isfinite(x)
|
|
#else
|
|
#define wxFinite(x) isfinite(x)
|
|
#endif
|
|
#elif ( defined(__GNUG__)||defined(__GNUWIN32__)||defined(__DJGPP__)|| \
|
|
defined(__SGI_CC__)||defined(__SUNCC__)||defined(__XLC__)|| \
|
|
defined(__HPUX__) ) && ( !defined(wxOSX_USE_IPHONE) || wxOSX_USE_IPHONE == 0 )
|
|
#ifdef __SOLARIS__
|
|
#include <ieeefp.h>
|
|
#endif
|
|
#define wxFinite(x) finite(x)
|
|
#else
|
|
#define wxFinite(x) ((x) == (x))
|
|
#endif
|
|
|
|
|
|
#if defined(__VISUALC__)||defined(__BORLAND__)
|
|
#define wxIsNaN(x) _isnan(x)
|
|
#elif defined(__GNUG__)||defined(__GNUWIN32__)||defined(__DJGPP__)|| \
|
|
defined(__SGI_CC__)||defined(__SUNCC__)||defined(__XLC__)|| \
|
|
defined(__HPUX__)
|
|
#define wxIsNaN(x) isnan(x)
|
|
#else
|
|
#define wxIsNaN(x) ((x) != (x))
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
|
|
#ifdef __INTELC__
|
|
|
|
inline bool wxIsSameDouble(double x, double y)
|
|
{
|
|
// VZ: this warning, given for operators==() and !=() is not wrong, as ==
|
|
// shouldn't be used with doubles, but we get too many of them and
|
|
// removing these operators is probably not a good idea
|
|
//
|
|
// Maybe we should always compare doubles up to some "epsilon" precision
|
|
#pragma warning(push)
|
|
|
|
// floating-point equality and inequality comparisons are unreliable
|
|
#pragma warning(disable: 1572)
|
|
|
|
return x == y;
|
|
|
|
#pragma warning(pop)
|
|
}
|
|
|
|
#else /* !__INTELC__ */
|
|
wxGCC_WARNING_SUPPRESS(float-equal)
|
|
inline bool wxIsSameDouble(double x, double y) { return x == y; }
|
|
wxGCC_WARNING_RESTORE(float-equal)
|
|
|
|
#endif /* __INTELC__/!__INTELC__ */
|
|
|
|
inline bool wxIsNullDouble(double x) { return wxIsSameDouble(x, 0.); }
|
|
|
|
inline int wxRound(double x)
|
|
{
|
|
wxASSERT_MSG( x > INT_MIN - 0.5 && x < INT_MAX + 0.5,
|
|
wxT("argument out of supported range") );
|
|
|
|
#if defined(HAVE_ROUND)
|
|
return int(round(x));
|
|
#else
|
|
return (int)(x < 0 ? x - 0.5 : x + 0.5);
|
|
#endif
|
|
}
|
|
#endif /* __cplusplus */
|
|
|
|
|
|
#if defined(__WINDOWS__) && !defined(__WXWINCE__)
|
|
#define wxMulDivInt32( a , b , c ) ::MulDiv( a , b , c )
|
|
#else
|
|
#define wxMulDivInt32( a , b , c ) (wxRound((a)*(((wxDouble)b)/((wxDouble)c))))
|
|
#endif
|
|
|
|
#if wxUSE_APPLE_IEEE
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
/* functions from common/extended.c */
|
|
WXDLLIMPEXP_BASE wxFloat64 wxConvertFromIeeeExtended(const wxInt8 *bytes);
|
|
WXDLLIMPEXP_BASE void wxConvertToIeeeExtended(wxFloat64 num, wxInt8 *bytes);
|
|
|
|
/* use wxConvertFromIeeeExtended() and wxConvertToIeeeExtended() instead */
|
|
#if WXWIN_COMPATIBILITY_2_8
|
|
wxDEPRECATED( WXDLLIMPEXP_BASE wxFloat64 ConvertFromIeeeExtended(const wxInt8 *bytes) );
|
|
wxDEPRECATED( WXDLLIMPEXP_BASE void ConvertToIeeeExtended(wxFloat64 num, wxInt8 *bytes) );
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
#endif /* wxUSE_APPLE_IEEE */
|
|
|
|
|
|
#endif /* _WX_MATH_H_ */
|