e_fmodl.c

Glibc 2.3.2源代码(解压后有100多M)

/*
 * 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;
}