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| author | Ulrich Drepper <drepper@redhat.com> | 2009-08-24 18:05:48 -0700 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2009-08-24 18:05:48 -0700 |
| commit | cf00cc00bc53ab26b23b810b4bfbdfb43262538a (patch) | |
| tree | 3d09caa3ecb83249ccaa5e0f874b9128c1de78e7 /sysdeps/x86_64/fpu | |
| parent | b42a214c1807dc596cf3647fc35a0eb42ccc7e68 (diff) | |
| download | glibc-cf00cc00bc53ab26b23b810b4bfbdfb43262538a.tar.gz glibc-cf00cc00bc53ab26b23b810b4bfbdfb43262538a.tar.xz glibc-cf00cc00bc53ab26b23b810b4bfbdfb43262538a.zip | |
Add ceil implementation for 64-bit machines.
On 64-bit machines we should not split doubles into two 32 bit integer and handle the words separately. We have wide registers. This patch implements a 64-bit ceil version. Ideally all other functions will be converted over time.
Diffstat (limited to 'sysdeps/x86_64/fpu')
| -rw-r--r-- | sysdeps/x86_64/fpu/math_private.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/sysdeps/x86_64/fpu/math_private.h b/sysdeps/x86_64/fpu/math_private.h index 8f4b792e77..4be753654a 100644 --- a/sysdeps/x86_64/fpu/math_private.h +++ b/sysdeps/x86_64/fpu/math_private.h @@ -22,6 +22,23 @@ while (0) /* We can do a few things better on x86-64. */ /* Direct movement of float into integer register. */ +#undef EXTRACT_WORDS64 +#define EXTRACT_WORDS64(i,d) \ +do { \ + long int i_; \ + asm ("movd %1, %0" : "=rm" (i_) : "x" (d)); \ + (i) = i_; \ +} while (0) + +/* And the reverse. */ +#undef INSERT_WORDS64 +#define INSERT_WORDS64(d,i) \ +do { \ + long int i_ = i; \ + asm ("movd %1, %0" : "=x" (d) : "rm" (i_)); \ +} while (0) + +/* Direct movement of float into integer register. */ #undef GET_FLOAT_WORD #define GET_FLOAT_WORD(i,d) \ do { \ |