/* * Written by J.T. Conklin <jtc@netbsd.org>. * Changes for long double by Ulrich Drepper <drepper@cygnus.com> * Adapted for x86-64 by Andreas Jaeger <aj@suse.de>. * Public domain. */#include <machine/asm.h>ENTRY(__ilogbl)	fldt	8(%rsp)/* I added the following ugly construct because ilogb(+-Inf) is   required to return INT_MAX in ISO C99.   -- jakub@redhat.com.  */	fxam			/* Is NaN or +-Inf?  */	fstsw   %ax	movb    $0x45, %dh	andb    %ah, %dh	cmpb    $0x05, %dh	je      1f		/* Is +-Inf, jump.  */	fxtract	fstp	%st	fistpl	-4(%rsp)	fwait	movl	-4(%rsp),%eax	ret1:	fstp	%st	movl	$0x7fffffff, %eax	retEND (__ilogbl)weak_alias (__ilogbl, ilogbl)