gcc/testsuite/gcc.c-torture/compile/20110913-1.c

   1 struct ieee754_double {
   2   double d;
   3 };
   4 extern const float __exp_deltatable[178];
   5 float __ieee754_expf (float x)
   6 {
   7   static const float himark = 88.72283935546875;
   8   static const float lomark = -103.972084045410;
   9   if (__builtin_isless(x, himark) && __builtin_isgreater(x, lomark))
  10     {
  11       int tval;
  12       double x22, t, result, dx;
  13       float delta;
  14       struct ieee754_double ex2_u;
  15       dx -= t;
  16       tval = (int) (t * 512.0);
  17       if (t >= 0)
  18         delta = - __exp_deltatable[tval];
  19       else
  20         delta = __exp_deltatable[-tval];
  21       x22 = (0.5000000496709180453 * dx + 1.0000001192102037084) * dx + delta;
  22       result = x22 * ex2_u.d + ex2_u.d;
  23       return (float) result;
  24     }
  25   return x;
  26 }