/**
-* Name: math.h
+* Name: wx/math.h
* Purpose: Declarations/definitions of common math functions
* Author: John Labenski and others
* Modified by:
* Created: 02/02/03
-* RCS-ID:
+* RCS-ID: $Id$
* Copyright: (c) John Labenski
* Licence: wxWindows licence
*/
#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 alway 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__ */
-inline bool wxIsSameDouble(double x, double y) { return x == y; }
-#endif /* __INTELC__/!__INTELC__ */
-
-inline bool wxIsNullDouble(double x) { return wxIsSameDouble(x, 0.); }
+
+ #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 alway 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__ */
+
+ inline bool wxIsSameDouble(double x, double y) { return x == y; }
+
+ #endif /* __INTELC__/!__INTELC__ */
+
+ inline bool wxIsNullDouble(double x) { return wxIsSameDouble(x, 0.); }
+
+ #if defined(HAVE_ROUND) && !defined(HAVE_DECL_ROUND)
+ extern "C" double round(double);
+ #endif
+ inline int wxRound(double x)
+ {
+ #if defined(HAVE_ROUND)
+ return int(round(x));
+ #else
+ return (int)(x < 0 ? x - 0.5 : x + 0.5);
+ #endif
+ }
#endif /* __cplusplus */
+#if defined(__WXMSW__) && !defined(__WXWINCE__)
+ #define wxMulDivInt32( a , b , c ) ::MulDiv( a , b , c )
+#elif defined( __WXMAC__ )
+ #define wxMulDivInt32( a , b , c ) ( (wxInt32) ( ( (wxInt64)(a) * (wxInt64)(b) ) / (wxInt64)(c) ) )
+#else
+ #define wxMulDivInt32( a , b , c ) ((wxInt32)((a)*(((wxDouble)b)/((wxDouble)c))))
+#endif
+
#if wxUSE_APPLE_IEEE
#ifdef __cplusplus
extern "C" {