gcc/testsuite/gcc.target/powerpc/pr46728-15.c

   1 /* { dg-do run } */
   2 /* { dg-skip-if "-mpowerpc-gpopt not supported" { powerpc*-*-darwin* } } */
   3 /* { dg-options "-O2 -ffast-math -fno-inline -fno-unroll-loops -lm -mpowerpc-gpopt" } */
   4
   5 #include <math.h>
   6
   7 extern void abort (void);
   8
   9 #define NVALS 6
  10
  11 static double
  12 convert_it_1 (double x)
  13 {
  14   return pow (x, 10.0 / 3.0);
  15 }
  16
  17 static double
  18 convert_it_2 (double x)
  19 {
  20   return pow (x, 11.0 / 3.0);
  21 }
  22
  23 static double
  24 convert_it_3 (double x)
  25 {
  26   return pow (x, -7.0 / 3.0);
  27 }
  28
  29 static double
  30 convert_it_4 (double x)
  31 {
  32   return pow (x, -8.0 / 3.0);
  33 }
  34
  35 int
  36 main (int argc, char *argv[])
  37 {
  38   double values[NVALS] = { 3.0, 1.95, 2.227, 4.0, 256.0, .0008797 };
  39   double PREC = .999999;
  40   unsigned i;
  41
  42   for (i = 0; i < NVALS; i++)
  43     {
  44       volatile double x, y;
  45
  46       x = __builtin_powi (values[i], 3);
  47       y = __builtin_powi (cbrt (values[i]), 1);
  48       if (fabs (convert_it_1 (values[i]) / (x * y)) < PREC)
  49         abort ();
  50
  51       x = __builtin_powi (values[i], 3);
  52       y = __builtin_powi (cbrt (values[i]), 2);
  53       if (fabs (convert_it_2 (values[i]) / (x * y)) < PREC)
  54         abort ();
  55
  56       x = __builtin_powi (values[i], -3);
  57       y = __builtin_powi (cbrt (values[i]), 2);
  58       if (fabs (convert_it_3 (values[i]) / (x * y)) < PREC)
  59         abort ();
  60
  61       x = __builtin_powi (values[i], -3);
  62       y = __builtin_powi (cbrt (values[i]), 1);
  63       if (fabs (convert_it_4 (values[i]) / (x * y)) < PREC)
  64         abort ();
  65     }
  66
  67   return 0;
  68 }