diff options
Diffstat (limited to 'libc/sysdeps/i386/fpu/e_logf.S')
| -rw-r--r-- | libc/sysdeps/i386/fpu/e_logf.S | 29 |
1 files changed, 23 insertions, 6 deletions
diff --git a/libc/sysdeps/i386/fpu/e_logf.S b/libc/sysdeps/i386/fpu/e_logf.S index cd4538b59..1992cc2f8 100644 --- a/libc/sysdeps/i386/fpu/e_logf.S +++ b/libc/sysdeps/i386/fpu/e_logf.S @@ -8,14 +8,12 @@ #include <machine/asm.h> -RCSID("$NetBSD: e_log.S,v 1.4 1995/05/08 23:48:39 jtc Exp $") - #ifdef __ELF__ - .section .rodata + .section .rodata.cst8,"aM",@progbits,8 #else .text #endif - .align ALIGNARG(4) + .p2align 3 ASM_TYPE_DIRECTIVE(one,@object) one: .double 1.0 ASM_SIZE_DIRECTIVE(one) @@ -28,9 +26,9 @@ limit: .double 0.29 #ifdef PIC -#define MO(op) op##@GOTOFF(%edx) +# define MO(op) op##@GOTOFF(%edx) #else -#define MO(op) op +# define MO(op) op #endif .text @@ -65,3 +63,22 @@ ENTRY(__ieee754_logf) fstp %st(1) ret END (__ieee754_logf) + +ENTRY(__logf_finite) + fldln2 // log(2) + flds 4(%esp) // x : log(2) +#ifdef PIC + LOAD_PIC_REG (dx) +#endif + fld %st // x : x : log(2) + 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) + fnstsw // x-1 : x : log(2) + andb $0x45, %ah + jz 2b + fstp %st(1) // x-1 : log(2) + fyl2xp1 // log(x) + ret +END(__logf_finite) |