s_nearbyintl.s

来自「Glibc 2.3.2源代码(解压后有100多M)」· S 代码 · 共 26 行

/*
 * Written by J.T. Conklin <[e-mail]>.
 * Public domain.
 */
/* Adapted for use as nearbyint by Ulrich Drepper <[e-mail]>.  */

#include <machine/asm.h>

ENTRY(__nearbyintl)
	fldt	4(%esp)
	pushl	%eax
	pushl	%ecx
	fnstcw	(%esp)
	movl	(%esp), %eax
	orl	$0x20, %eax
	movl	%eax, 4(%esp)
	fldcw	4(%esp)
	frndint
	fclex
	fldcw	(%esp)
	popl	%ecx
	popl	%eax
	ret
END (__nearbyintl)
weak_alias (__nearbyintl, nearbyintl)