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sortix--sortix/libm/arch/i387/s_ilogb.S
Jonas 'Sortie' Termansen 5980be9b3c Add Sortix Math Library.
This work is based in part on code from NetBSD libm, libc and kernel.

The library is partly public domain and partly BSD-style licensed.
2013-12-17 14:30:39 +01:00

32 lines
425 B
ArmAsm

/*
* Written by J.T. Conklin <jtc@NetBSD.org>.
* Public domain.
*/
#include <machine/asm.h>
RCSID("$NetBSD: s_ilogb.S,v 1.7 2003/07/26 19:25:02 salo Exp $")
ENTRY(ilogb)
#ifdef __i386__
pushl %ebp
movl %esp,%ebp
subl $4,%esp
fldl 8(%ebp)
fxtract
fstp %st
fistpl -4(%ebp)
movl -4(%ebp),%eax
leave
#else
movsd %xmm0,-8(%rsp)
fldl -8(%rsp)
fxtract
fstp %st
fistpl -8(%rsp)
movl -8(%rsp),%eax
#endif
ret