diff options
Diffstat (limited to 'sysdeps/i386')
| -rw-r--r-- | sysdeps/i386/fpu/e_log.S | 8 | ||||
| -rw-r--r-- | sysdeps/i386/fpu/e_logf.S | 8 | ||||
| -rw-r--r-- | sysdeps/i386/fpu/e_logl.S | 8 | ||||
| -rw-r--r-- | sysdeps/i386/fpu/libm-test-ulps | 12 | ||||
| -rw-r--r-- | sysdeps/i386/i686/fpu/e_logl.S | 8 |
5 files changed, 40 insertions, 4 deletions
diff --git a/sysdeps/i386/fpu/e_log.S b/sysdeps/i386/fpu/e_log.S index 0877924..3fa32aa 100644 --- a/sysdeps/i386/fpu/e_log.S +++ b/sysdeps/i386/fpu/e_log.S @@ -46,7 +46,13 @@ ENTRY(__ieee754_log) fnstsw // x-1 : x : log(2) andb $0x45, %ah jz 2f - fstp %st(1) // x-1 : log(2) + fxam + fnstsw + andb $0x45, %ah + cmpb $0x40, %ah + jne 5f + fabs // log(1) is +0 in all rounding modes. +5: fstp %st(1) // x-1 : log(2) fyl2xp1 // log(x) ret diff --git a/sysdeps/i386/fpu/e_logf.S b/sysdeps/i386/fpu/e_logf.S index 485180e..ca83d39 100644 --- a/sysdeps/i386/fpu/e_logf.S +++ b/sysdeps/i386/fpu/e_logf.S @@ -47,7 +47,13 @@ ENTRY(__ieee754_logf) fnstsw // x-1 : x : log(2) andb $0x45, %ah jz 2f - fstp %st(1) // x-1 : log(2) + fxam + fnstsw + andb $0x45, %ah + cmpb $0x40, %ah + jne 5f + fabs // log(1) is +0 in all rounding modes. +5: fstp %st(1) // x-1 : log(2) fyl2xp1 // log(x) ret diff --git a/sysdeps/i386/fpu/e_logl.S b/sysdeps/i386/fpu/e_logl.S index d7a459a..edae1d7 100644 --- a/sysdeps/i386/fpu/e_logl.S +++ b/sysdeps/i386/fpu/e_logl.S @@ -47,7 +47,13 @@ ENTRY(__ieee754_logl) fnstsw // x-1 : x : log(2) andb $0x45, %ah jz 2f - fstp %st(1) // x-1 : log(2) + fxam + fnstsw + andb $0x45, %ah + cmpb $0x40, %ah + jne 5f + fabs // log(1) is +0 in all rounding modes. +5: fstp %st(1) // x-1 : log(2) fyl2xp1 // log(x) ret diff --git a/sysdeps/i386/fpu/libm-test-ulps b/sysdeps/i386/fpu/libm-test-ulps index 3be1806..b7b2e12 100644 --- a/sysdeps/i386/fpu/libm-test-ulps +++ b/sysdeps/i386/fpu/libm-test-ulps @@ -1096,6 +1096,18 @@ Function: "log1p": ildouble: 1 ldouble: 1 +Function: "log_downward": +ildouble: 1 +ldouble: 1 + +Function: "log_towardzero": +ildouble: 1 +ldouble: 1 + +Function: "log_upward": +ildouble: 1 +ldouble: 1 + Function: "pow": ildouble: 1 ldouble: 1 diff --git a/sysdeps/i386/i686/fpu/e_logl.S b/sysdeps/i386/i686/fpu/e_logl.S index 8a86222..a0d1107 100644 --- a/sysdeps/i386/i686/fpu/e_logl.S +++ b/sysdeps/i386/i686/fpu/e_logl.S @@ -46,7 +46,13 @@ ENTRY(__ieee754_logl) fcomip %st(1) // |x-1| : x-1 : x : log(2) fstp %st(0) // x-1 : x : log(2) jc 2f - fstp %st(1) // x-1 : log(2) + fxam + fnstsw + andb $0x45, %ah + cmpb $0x40, %ah + jne 4f + fabs // log(1) is +0 in all rounding modes. +4: fstp %st(1) // x-1 : log(2) fyl2xp1 // log(x) ret |