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| author | Ulrich Drepper <drepper@redhat.com> | 2007-03-15 20:10:51 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2007-03-15 20:10:51 +0000 |
| commit | 6b2665f534dd34c20f31dc6e3540114762a8d3a8 (patch) | |
| tree | e32593b105af2dea5c2397b7527f0e0348656b95 /sysdeps/x86_64/fpu | |
| parent | 44969f17bb8e323ab66799f73a05d23a5a2cf83a (diff) | |
| download | glibc-6b2665f534dd34c20f31dc6e3540114762a8d3a8.tar.gz glibc-6b2665f534dd34c20f31dc6e3540114762a8d3a8.tar.xz glibc-6b2665f534dd34c20f31dc6e3540114762a8d3a8.zip | |
[BZ #3919]
* math/libm-test.inc (log_test): Test -Inf and NaN. (log10_test, log1p_test, log2_test): Test -Inf. * sysdeps/i386/fpu/e_log.S (__ieee754_log): Don't raise FE_INVALID when argument is qNaN. * sysdeps/i386/fpu/e_logl.S (__ieee754_logl): Likewise. * sysdeps/i386/fpu/e_logf.S (__ieee754_logf): Likewise. * sysdeps/x86_64/fpu/e_logl.S (__ieee754_logl): Likewise. * sysdeps/x86_64/fpu/e_log10l.S (__ieee754_log10l): Replace andb $1, %ah with testb $1, %ah, don't test for parity, instead testb $4, %ah and jump if non-zero. * sysdeps/x86_64/fpu/e_log2l.S (__ieee754_log2l): Likewise. * sysdeps/x86_64/fpu/s_log1pl.S (__log1pl): Likewise. 2007-03-15 Jakub Jelinek <jakub@redhat.com>
Diffstat (limited to 'sysdeps/x86_64/fpu')
| -rw-r--r-- | sysdeps/x86_64/fpu/e_log10l.S | 5 | ||||
| -rw-r--r-- | sysdeps/x86_64/fpu/e_log2l.S | 5 | ||||
| -rw-r--r-- | sysdeps/x86_64/fpu/e_logl.S | 12 | ||||
| -rw-r--r-- | sysdeps/x86_64/fpu/s_log1pl.S | 5 |
4 files changed, 20 insertions, 7 deletions
diff --git a/sysdeps/x86_64/fpu/e_log10l.S b/sysdeps/x86_64/fpu/e_log10l.S index b4343bef45..633234b744 100644 --- a/sysdeps/x86_64/fpu/e_log10l.S +++ b/sysdeps/x86_64/fpu/e_log10l.S @@ -42,7 +42,7 @@ ENTRY(__ieee754_log10l) fxam fnstsw fld %st // x : x : log10(2) - andb $1,%ah + testb $1, %ah jnz 3f // in case x is NaN or ħInf 4: fsubl MO(one) // x-1 : x : log10(2) fld %st // x-1 : x-1 : x : log10(2) @@ -59,7 +59,8 @@ ENTRY(__ieee754_log10l) fyl2x // log10(x) ret -3: jp 4b // in case x is ħInf +3: testb $4, %ah + jnz 4b // in case x is ħInf fstp %st(1) fstp %st(1) ret diff --git a/sysdeps/x86_64/fpu/e_log2l.S b/sysdeps/x86_64/fpu/e_log2l.S index 7a89b94d9f..f04d30a05a 100644 --- a/sysdeps/x86_64/fpu/e_log2l.S +++ b/sysdeps/x86_64/fpu/e_log2l.S @@ -39,7 +39,7 @@ ENTRY(__ieee754_log2l) fxam fnstsw fld %st // x : x : 1 - andb $1,%ah + testb $1, %ah jnz 3f // in case x is NaN or ħInf 4: fsub %st(2), %st // x-1 : x : 1 fld %st // x-1 : x-1 : x : 1 @@ -56,7 +56,8 @@ ENTRY(__ieee754_log2l) fyl2x // log(x) ret -3: jp 4b // in case x is ħInf +3: testb $4, %ah + jnz 4b // in case x is ħInf fstp %st(1) fstp %st(1) ret diff --git a/sysdeps/x86_64/fpu/e_logl.S b/sysdeps/x86_64/fpu/e_logl.S index a0bed663c8..2ba91eedfd 100644 --- a/sysdeps/x86_64/fpu/e_logl.S +++ b/sysdeps/x86_64/fpu/e_logl.S @@ -38,8 +38,12 @@ limit: .double 0.29 ENTRY(__ieee754_logl) fldln2 // log(2) fldt 8(%rsp) // x : log(2) + fxam + fnstsw fld %st // x : x : log(2) - fsubl MO(one) // x-1 : x : log(2) + testb $1, %ah + jnz 3f // in case x is NaN or +-Inf +4: fsubl MO(one) // x-1 : x : log(2) fld %st // x-1 : x-1 : x : log(2) fabs // |x-1| : x-1 : x : log(2) fcompl MO(limit) // x-1 : x : log(2) @@ -53,4 +57,10 @@ ENTRY(__ieee754_logl) 2: fstp %st(0) // x : log(2) fyl2x // log(x) ret + +3: testb $4, %ah + jnz 4b // in case x is +-Inf + fstp %st(1) + fstp %st(1) + ret END (__ieee754_logl) diff --git a/sysdeps/x86_64/fpu/s_log1pl.S b/sysdeps/x86_64/fpu/s_log1pl.S index 7fbd0e5aaa..ac2bd22a4f 100644 --- a/sysdeps/x86_64/fpu/s_log1pl.S +++ b/sysdeps/x86_64/fpu/s_log1pl.S @@ -45,7 +45,7 @@ ENTRY(__log1pl) fxam fnstsw fld %st - andb $1,%ah + testb $1, %ah jnz 3f // in case x is NaN or ħInf 4: fabs @@ -62,7 +62,8 @@ ENTRY(__log1pl) 2: fyl2xp1 ret -3: jp 4b // in case x is ħInf +3: testb $4, %ah + jnz 4b // in case x is ħInf fstp %st(1) fstp %st(1) ret |