s_finitel.s

来自「glibc 库, 不仅可以学习使用库函数,还可以学习函数的具体实现,是提高功力的」· S 代码 · 共 17 行

/*
 * Written by Joe Keane <[e-mail]>.
 * Adopted for x86-64 by Andreas Jaeger <[e-mail]>.
 */

#include <machine/asm.h>

ENTRY(__finitel)
	movl	16(%rsp),%eax
	orl	$0xffff8000, %eax
	incl	%eax
	shrl	$31, %eax
	ret
END (__finitel)
weak_alias (__finitel, finitel)
hidden_def (__finitel)