[tkreuzer] 57012: [INCLUDE/CRT] Partly revert r56995. Firstly it breaks MSVC builds, secondly the stuff doesn't belong into this header. MS headers don't have __fpclassify etc and our headers are n...

Author: tkreuzer
Date: Wed Aug  1 08:23:54 2012
New Revision: 57012

URL: http://svn.reactos.org/svn/reactos?rev=57012&view=rev
Log:
[INCLUDE/CRT]
Partly revert r56995. Firstly it breaks MSVC builds, secondly the stuff doesn't belong
into this header. MS headers don't have __fpclassify etc and our headers are not
supposed to contain any fancy additions. If you need it for 3rd party code, put it
somewhere else.

Modified:
    trunk/reactos/include/crt/math.h

Modified: trunk/reactos/include/crt/math.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/include/crt/math.h?rev=570…
==============================================================================
--- trunk/reactos/include/crt/math.h [iso-8859-1] (original)
+++ trunk/reactos/include/crt/math.h [iso-8859-1] Wed Aug  1 08:23:54 2012
@@ -240,6 +240,8 @@
 
 #pragma pack(pop)
 
+#endif /* !_INC_MATH */
+
 #if defined(_USE_MATH_DEFINES) && !defined(_MATH_DEFINES_DEFINED)
 #define _MATH_DEFINES_DEFINED
 
@@ -259,141 +261,41 @@
 
 #endif /* _USE_MATH_DEFINES */
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
 #ifndef __NO_ISOCEXT
 #if (defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) \
   || !defined __STRICT_ANSI__ || defined __GLIBCPP__
   
-/* 7.12.3.1 */
-/*
-   Return values for fpclassify.
-   These are based on Intel x87 fpu condition codes
-   in the high byte of status word and differ from
-   the return values for MS IEEE 754 extension _fpclass()
-*/
-#define FP_NAN		0x0100
-#define FP_NORMAL	0x0400
-#define FP_INFINITE	(FP_NAN | FP_NORMAL)
-#define FP_ZERO		0x4000
-#define FP_SUBNORMAL	(FP_NORMAL | FP_ZERO)
-/* 0x0200 is signbit mask */
-
-/*
-  We can't inline float or double, because we want to ensure truncation
-  to semantic type before classification. 
-  (A normal long double value might become subnormal when 
-  converted to double, and zero when converted to float.)
-*/
-
-  extern int __cdecl __fpclassifyl (long double);
-  extern int __cdecl __fpclassifyf (float);
-  extern int __cdecl __fpclassify (double);
-
-#ifndef __CRT__NO_INLINE
-  __CRT_INLINE int __cdecl __fpclassifyl (long double x) {
-    unsigned short sw;
-    __asm__ __volatile__ ("fxam; fstsw %%ax;" : "=a" (sw):
"t" (x));
-    return sw & (FP_NAN | FP_NORMAL | FP_ZERO );
-  }
-  __CRT_INLINE int __cdecl __fpclassify (double x) {
-#ifdef __x86_64__
-    __mingw_dbl_type_t hlp;
-    unsigned int l, h;
-
-    hlp.x = x;
-    h = hlp.lh.high;
-    l = hlp.lh.low | (h & 0xfffff);
-    h &= 0x7ff00000;
-    if ((h | l) == 0)
-      return FP_ZERO;
-    if (!h)
-      return FP_SUBNORMAL;
-    if (h == 0x7ff00000)
-      return (l ? FP_NAN : FP_INFINITE);
-    return FP_NORMAL;
-#else
-    unsigned short sw;
-    __asm__ __volatile__ ("fxam; fstsw %%ax;" : "=a" (sw):
"t" (x));
-    return sw & (FP_NAN | FP_NORMAL | FP_ZERO );
-#endif
-  }
-  __CRT_INLINE int __cdecl __fpclassifyf (float x) {
-#ifdef __x86_64__
-    __mingw_flt_type_t hlp;
-
-    hlp.x = x;
-    hlp.val &= 0x7fffffff;
-    if (hlp.val == 0)
-      return FP_ZERO;
-    if (hlp.val < 0x800000)
-      return FP_SUBNORMAL;
-    if (hlp.val >= 0x7f800000)
-      return (hlp.val > 0x7f800000 ? FP_NAN : FP_INFINITE);
-    return FP_NORMAL;
-#else
-    unsigned short sw;
-    __asm__ __volatile__ ("fxam; fstsw %%ax;" : "=a" (sw):
"t" (x));
-    return sw & (FP_NAN | FP_NORMAL | FP_ZERO );
-#endif
-  }
-#endif
-
-#define fpclassify(x) (sizeof (x) == sizeof (float) ? __fpclassifyf (x)	  \
-  : sizeof (x) == sizeof (double) ? __fpclassify (x) \
-  : __fpclassifyl (x))
-
-/* 7.12.3.2 */
-#define isfinite(x) ((fpclassify(x) & FP_NAN) == 0)
-
-/* 7.12.3.3 */
-#define isinf(x) (fpclassify(x) == FP_INFINITE)
-  
-/* Inverse hyperbolic trig functions  */ 
-/* 7.12.5.1 */
+  /* Inverse hyperbolic trig functions  */ 
+  /* 7.12.5.1 */
   extern double __cdecl acosh (double);
   extern float __cdecl acoshf (float);
   extern long double __cdecl acoshl (long double);
 
-/* 7.12.5.2 */
+  /* 7.12.5.2 */
   extern double __cdecl asinh (double);
   extern float __cdecl asinhf (float);
   extern long double __cdecl asinhl (long double);
 
-/* 7.12.5.3 */
+  /* 7.12.5.3 */
   extern double __cdecl atanh (double);
   extern float __cdecl atanhf  (float);
   extern long double __cdecl atanhl (long double);
   
-/* 7.12.6.2 */
+  /* 7.12.6.2 */
   extern double __cdecl exp2(double);
   extern float __cdecl exp2f(float);
   extern long double __cdecl exp2l(long double);
   
-/* 7.12.6.10 */
+  /* 7.12.6.10 */
   extern double __cdecl log2 (double);
   extern float __cdecl log2f (float);
   extern long double __cdecl log2l (long double);
   
-/* 7.12.9.6 */
-/* round away from zero, regardless of fpu control word settings */
-  extern double __cdecl round (double);
-  extern float __cdecl roundf (float);
-  extern long double __cdecl roundl (long double);
-  
-/* 7.12.9.8 */
-/* round towards zero, regardless of fpu control word settings */
+  /* 7.12.9.8 */
+  /* round towards zero, regardless of fpu control word settings */
   extern double __cdecl trunc (double);
   extern float __cdecl truncf (float);
   extern long double __cdecl truncl (long double);
 
 #endif /* __STDC_VERSION__ >= 199901L */
 #endif /* __NO_ISOCEXT */
-
-#ifdef __cplusplus
-} // extern "C"
-#endif
-
-#endif /* !_INC_MATH */