summary refs log tree commit diff
path: root/math
diff options
context:
space:
mode:
authorUlrich Drepper <drepper@redhat.com>2004-03-10 06:05:14 +0000
committerUlrich Drepper <drepper@redhat.com>2004-03-10 06:05:14 +0000
commitf4c024d1f956a7e853eba10ce33ab6851b5d43d1 (patch)
tree1e1fb47ee60867cc36f948b08e1388786b3ad161 /math
parent8b9d605485be779bb03778e780e9875525ec2ca4 (diff)
downloadglibc-f4c024d1f956a7e853eba10ce33ab6851b5d43d1.tar.gz
glibc-f4c024d1f956a7e853eba10ce33ab6851b5d43d1.tar.xz
glibc-f4c024d1f956a7e853eba10ce33ab6851b5d43d1.zip
Update.
2004-03-09  Richard Henderson  <rth@redhat.com>

	* math/math.h (isgreater, isgreaterequal, isless, islessequal,
	islessgreater, isunordered): Use builtins if available.
	* sysdeps/i386/fpu/bits/mathinline.h: Don't define via builtins.
	* sysdeps/m68k/fpu/bits/mathinline.h: Likewise.
	* sysdeps/powerpc/fpu/bits/mathinline.h: Likewise.
	* sysdeps/sparc/fpu/bits/mathinline.h: Likewise.
	* sysdeps/x86_64/fpu/bits/mathinline.h: Likewise.
	* sysdeps/alpha/fpu/bits/mathinline.h (isgreater, isgreaterequal,
	isless, islessequal, islessgreater): Remove; use default.
	(isunordered): Convert inputs to double.
Diffstat (limited to 'math')
-rw-r--r--math/math.h22
1 files changed, 16 insertions, 6 deletions
diff --git a/math/math.h b/math/math.h
index 7d311462d9..9161412f98 100644
--- a/math/math.h
+++ b/math/math.h
@@ -357,18 +357,28 @@ extern int matherr (struct exception *__exc);
 # define __NO_MATH_INLINES	1
 #endif
 
+#if __USE_ISOC99 && __GNUC_PREREQ(2,97)
+/* ISO C99 defines some macros to compare number while taking care for
+   unordered numbers.  Many FPUs provide special instructions to support
+   these operations.  Generic support in GCC for these as builtins went
+   in before 3.0.0, but not all cpus added their patterns.  We define
+   versions that use the builtins here, and <bits/mathinline.h> will
+   undef/redefine as appropriate for the specific GCC version in use.  */
+# define isgreater(x, y)	__builtin_isgreater(x, y)
+# define isgreaterequal(x, y)	__builtin_isgreaterequal(x, y)
+# define isless(x, y)		__builtin_isless(x, y)
+# define islessequal(x, y)	__builtin_islessequal(x, y)
+# define islessgreater(x, y)	__builtin_islessgreater(x, y)
+# define isunordered(u, v)	__builtin_isunordered(u, v)
+#endif
+
 /* Get machine-dependent inline versions (if there are any).  */
 #ifdef __USE_EXTERN_INLINES
 # include <bits/mathinline.h>
 #endif
 
-
 #if __USE_ISOC99
-/* ISO C99 defines some macros to compare number while taking care
-   for unordered numbers.  Since many FPUs provide special
-   instructions to support these operations and these tests are
-   defined in <bits/mathinline.h>, we define the generic macros at
-   this late point and only if they are not defined yet.  */
+/* If we've still got undefined comparison macros, provide defaults.  */
 
 /* Return nonzero value if X is greater than Y.  */
 # ifndef isgreater