Simplify C99 isgreater macros

Simplify the C99 isgreater macros.  Although some support was added
in GCC 2.97, not all targets added support until GCC 3.1.  Therefore
only use the builtins in math.h from GCC 3.1 onwards, and defer to
generic macros otherwise.  Improve the generic isunordered macro
to use compares rather than call fpclassify twice - this is not only
faster but also correct for signaling NaNs.

	* math/math.h: Improve handling of C99 isgreater macros.
	* sysdeps/alpha/fpu/bits/mathinline.h: Remove isgreater macros.
	* sysdeps/m68k/m680x0/fpu/bits/mathinline.h: Likewise.
	* sysdeps/powerpc/bits/mathinline.h: Likewise.
	* sysdeps/sparc/fpu/bits/mathinline.h: Likewise.
	* sysdeps/x86/fpu/bits/mathinline.h: Likewise.

1 files changed, 0 insertions, 54 deletions

diff --git a/sysdeps/m68k/m680x0/fpu/bits/mathinline.h b/sysdeps/m68k/m680x0/fpu/bits/mathinline.h
index b92b1f83e7..07ba1454b9 100644
--- a/sysdeps/m68k/m680x0/fpu/bits/mathinline.h
+++ b/sysdeps/m68k/m680x0/fpu/bits/mathinline.h
@@ -29,60 +29,6 @@
 #ifdef	__GNUC__
 
 #ifdef __USE_ISOC99
-/* GCC 3.1 and up have builtins that actually can be used.  */
-# if !__GNUC_PREREQ (3,1)
-/* ISO C99 defines some macros to perform unordered comparisons.  The
-   m68k FPU supports this with special opcodes and we should use them.
-   These must not be inline functions since we have to be able to handle
-   all floating-point types.  */
-#  undef isgreater
-#  undef isgreaterequal
-#  undef isless
-#  undef islessequal
-#  undef islessgreater
-#  undef isunordered
-#  define isgreater(x, y)					\
-   __extension__					\
-   ({ char __result;					\
-      __asm__ ("fcmp%.x %2,%1; fsogt %0"		\
-	       : "=dm" (__result) : "f" (x), "f" (y));	\
-      __result != 0; })
-
-#  define isgreaterequal(x, y)				\
-   __extension__					\
-   ({ char __result;					\
-      __asm__ ("fcmp%.x %2,%1; fsoge %0"		\
-	       : "=dm" (__result) : "f" (x), "f" (y));	\
-      __result != 0; })
-
-#  define isless(x, y)					\
-   __extension__					\
-   ({ char __result;					\
-      __asm__ ("fcmp%.x %2,%1; fsolt %0"		\
-	       : "=dm" (__result) : "f" (x), "f" (y));	\
-      __result != 0; })
-
-#  define islessequal(x, y)				\
-   __extension__					\
-   ({ char __result;					\
-      __asm__ ("fcmp%.x %2,%1; fsole %0"		\
-	       : "=dm" (__result) : "f" (x), "f" (y));	\
-      __result != 0; })
-
-#  define islessgreater(x, y)				\
-   __extension__					\
-   ({ char __result;					\
-      __asm__ ("fcmp%.x %2,%1; fsogl %0"		\
-	       : "=dm" (__result) : "f" (x), "f" (y));	\
-      __result != 0; })
-
-#  define isunordered(x, y)				\
-   __extension__					\
-   ({ char __result;					\
-      __asm__ ("fcmp%.x %2,%1; fsun %0"			\
-	       : "=dm" (__result) : "f" (x), "f" (y));	\
-      __result != 0; })
-# endif /* GCC 3.1 */
 
 /* Test for negative number.  Used in the signbit() macro.  */
 __MATH_INLINE int