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fparith_double_sub.c (284B)

      1 /* Double FSUB round-trip. volatile int inputs -> double so a real FSUB (double)
      2  * is emitted. 50.0 - 8.0 = 42.0; (int)42.0 == 42. */
      3 int test_main(void) {
      4   volatile int ia = 50, ib = 8;
      5   double a = (double)ia, b = (double)ib;
      6   double r = a - b;
      7   return (int)r == 42 ? 42 : 0;
      8 }