e_fmodl.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 23 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_fmodl (long double x, long double y)
{
  long double res;

  asm ("1:\tfprem\n"
       "fstsw   %%ax\n"
       "sahf\n"
       "jp      1b\n"
       "fstp    %%st(1)"
       : "=t" (res) : "0" (x), "u" (y) : "ax", "st(1)");
  return res;
}