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| author | Wilco Dijkstra <wdijkstr@arm.com> | 2017-09-28 19:20:33 +0100 |
|---|---|---|
| committer | Wilco Dijkstra <wdijkstr@arm.com> | 2017-09-28 19:43:54 +0100 |
| commit | 1e6d07234fc0edcf0e88d75cf48f0b0dbbea3f39 (patch) | |
| tree | 55a43e82f97a2b808f13effeec49df332dfbc400 /sysdeps/powerpc | |
| parent | b2f03cf3a4b7ae4d1db155fba2180e3f580ce805 (diff) | |
| download | glibc-1e6d07234fc0edcf0e88d75cf48f0b0dbbea3f39.zip glibc-1e6d07234fc0edcf0e88d75cf48f0b0dbbea3f39.tar.gz glibc-1e6d07234fc0edcf0e88d75cf48f0b0dbbea3f39.tar.bz2 | |
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.
Diffstat (limited to 'sysdeps/powerpc')
| -rw-r--r-- | sysdeps/powerpc/bits/mathinline.h | 25 |
1 files changed, 0 insertions, 25 deletions
diff --git a/sysdeps/powerpc/bits/mathinline.h b/sysdeps/powerpc/bits/mathinline.h index e5f0cd3..406465f 100644 --- a/sysdeps/powerpc/bits/mathinline.h +++ b/sysdeps/powerpc/bits/mathinline.h @@ -29,31 +29,6 @@ #if defined __GNUC__ && !defined _SOFT_FLOAT && !defined __NO_FPRS__ #ifdef __USE_ISOC99 -# if !__GNUC_PREREQ (2,97) -# define __unordered_cmp(x, y) \ - (__extension__ \ - ({ __typeof__(x) __x = (x); __typeof__(y) __y = (y); \ - unsigned __r; \ - __asm__("fcmpu 7,%1,%2 ; mfcr %0" : "=r" (__r) : "f" (__x), "f"(__y) \ - : "cr7"); \ - __r; })) - -# undef isgreater -# undef isgreaterequal -# undef isless -# undef islessequal -# undef islessgreater -# undef isunordered - -# define isgreater(x, y) (__unordered_cmp (x, y) >> 2 & 1) -# define isgreaterequal(x, y) ((__unordered_cmp (x, y) & 6) != 0) -# define isless(x, y) (__unordered_cmp (x, y) >> 3 & 1) -# define islessequal(x, y) ((__unordered_cmp (x, y) & 0xA) != 0) -# define islessgreater(x, y) ((__unordered_cmp (x, y) & 0xC) != 0) -# define isunordered(x, y) (__unordered_cmp (x, y) & 1) - -# endif /* __GNUC_PREREQ (2,97) */ - /* The gcc, version 2.7 or below, has problems with all this inlining code. So disable it for this version of the compiler. */ # if __GNUC_PREREQ (2, 8) |