diff options
| author | Ulrich Drepper <drepper@redhat.com> | 1999-01-29 16:58:13 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 1999-01-29 16:58:13 +0000 |
| commit | 6eaccb759aff7e3fdd679d39aabaf773b18dfbd1 (patch) | |
| tree | ba33932b592d55490b64f2c76ad367e0530ad170 /sysdeps/alpha/fpu | |
| parent | 21ab6fb6bc4c2eb2b3a9b533d11942b45865aca5 (diff) | |
| download | glibc-6eaccb759aff7e3fdd679d39aabaf773b18dfbd1.tar.gz glibc-6eaccb759aff7e3fdd679d39aabaf773b18dfbd1.tar.xz glibc-6eaccb759aff7e3fdd679d39aabaf773b18dfbd1.zip | |
Update. glibc-2.0.112 cvs/glibc-2_0_112
1999-01-29 Richard Henderson <rth@twiddle.net>
* scripts/config.sub: Recognize alpha{pca5[67],ev[67]}.
* sysdeps/generic/elf/backtracesyms.c (__backtrace_symbols):
Format pointer differences as longs.
* sysdeps/alpha/fpu/s_floor.c, sysdeps/alpha/fpu/s_floorf.c:
Copy commentary from bits/mathinclude.h. Kill unused defines.
* sysdeps/alpha/atomicity.h: New file.
Diffstat (limited to 'sysdeps/alpha/fpu')
| -rw-r--r-- | sysdeps/alpha/fpu/s_floor.c | 11 | ||||
| -rw-r--r-- | sysdeps/alpha/fpu/s_floorf.c | 14 |
2 files changed, 11 insertions, 14 deletions
diff --git a/sysdeps/alpha/fpu/s_floor.c b/sysdeps/alpha/fpu/s_floor.c index c7e14662fe..146e19b35a 100644 --- a/sysdeps/alpha/fpu/s_floor.c +++ b/sysdeps/alpha/fpu/s_floor.c @@ -17,18 +17,17 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#ifndef __USE_EXTERN_INLINES -#define __USE_EXTERN_INLINES -#endif -#define __floor __i_floor - #include <math.h> -#undef __floor + +/* Use the -inf rounding mode conversion instructions to implement + floor. We note when the exponent is large enough that the value + must be integral, as this avoids unpleasant integer overflows. */ double __floor (double x) { + /* Check not zero since floor(-0) == -0. */ if (x != 0 && fabs (x) < 9007199254740992.0) /* 1 << DBL_MANT_DIG */ { double __tmp1; diff --git a/sysdeps/alpha/fpu/s_floorf.c b/sysdeps/alpha/fpu/s_floorf.c index 7502b6781e..9e693642dd 100644 --- a/sysdeps/alpha/fpu/s_floorf.c +++ b/sysdeps/alpha/fpu/s_floorf.c @@ -17,14 +17,12 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -#ifndef __USE_EXTERN_INLINES -#define __USE_EXTERN_INLINES -#endif -#define __floorf __i_floorf - #include <math.h> -#undef __floorf + +/* Use the -inf rounding mode conversion instructions to implement + floor. We note when the exponent is large enough that the value + must be integral, as this avoids unpleasant integer overflows. */ float __floorf (float x) @@ -37,7 +35,7 @@ __floorf (float x) convert back to S_Floating in the end. The initial conversion to T_Floating is needed to handle denormals. */ - float __tmp1, __tmp2; + float tmp1, tmp2; __asm ("cvtst/s %3,%2\n\t" #ifdef _IEEE_FP_INEXACT @@ -46,7 +44,7 @@ __floorf (float x) "cvttq/svm %2,%1\n\t" #endif "cvtqt/m %1,%0\n\t" - : "=f"(x), "=&f"(__tmp1), "=&f"(__tmp2) + : "=f"(x), "=&f"(tmp1), "=&f"(tmp2) : "f"(x)); } return x; |