/*
* Written by J.T. Conklin <jtc@netbsd.org>.
* Public domain.
*/
#include <machine/asm.h>
RCSID("$NetBSD: s_log1pf.S,v 1.4 1995/05/09 00:13:05 jtc Exp $")
#ifdef __ELF__
.section .rodata
#else
.text
#endif
.align ALIGNARG(4)
/* The fyl2xp1 can only be used for values in
-1 + sqrt(2) / 2 <= x <= 1 - sqrt(2) / 2
0.29 is a safe value.
limit: .float 0.29
one: .float 1.0
* Use the fyl2xp1 function when the argument is in the range -0.29 to 0.29,
* otherwise fyl2x with the needed extra computation.
ENTRY(__log1pf)
fldln2
flds 4(%esp)
#ifdef PIC
call 1f
1: popl %edx
addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %edx
fxam
fnstsw
fld %st
sahf
jc 3f // in case x is NaN or <EFBFBD>Inf
4: fabs
fcomps limit@GOTOFF(%edx)
fcomps limit
jc 2f
fadds one@GOTOFF(%edx)
fadds one
fyl2x
ret
2: fyl2xp1
3: jp 4b // in case x is <EFBFBD>Inf
fstp %st(1)
END (__log1pf)
weak_alias (__log1pf, log1pf)