e_sqrtl.c

来自「linux下的C语言库源码有一百多M解压后很不错」· C语言 代码 · 共 19 行

/*
 * Written by J.T. Conklin <[e-mail]>.
 * Public domain.
 *
 * Adapted for `long double' by Ulrich Drepper <[e-mail]>.
 */

#include <math_private.h>

long double
__ieee754_sqrtl (long double x)
{
  long double res;

  asm ("fsqrt" : "=t" (res) : "0" (x));

  return res;
}