s_significandl.c

来自「Glibc 2.3.2源代码(解压后有100多M)」· C语言 代码 · 共 20 行

/*
 * Written by J.T. Conklin <[e-mail]>.
 * Changes for long double by Ulrich Drepper <[e-mail]>
 * Public domain.
 */

#include <math_private.h>

long double
__significandl (long double x)
{
  long double res;

  asm ("fxtract\n"
       "fstp	%%st(1)" : "=t" (res) : "0" (x));
  return res;
}

weak_alias (__significandl, significandl)