gcc/testsuite/gcc.target/powerpc/copysign128-1.c

   1 /* { dg-do run { target { powerpc64*-*-* && vsx_hw } } } */
   2 /* { dg-options "-mfloat128 -mvsx" } */
   3
   4 void abort ();
   5
   6 typedef unsigned long long int uint64_t;
   7
   8 typedef union
   9 {
  10   __float128 value;
  11
  12   struct
  13   {
  14 #if __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
  15     unsigned negative:1;
  16     unsigned exponent:15;
  17     unsigned quiet_nan:1;
  18     uint64_t mant_high:47;
  19     uint64_t mant_low:64;
  20 #else
  21     uint64_t mant_low:64;
  22     uint64_t mant_high:47;
  23     unsigned quiet_nan:1;
  24     unsigned exponent:15;
  25     unsigned negative:1;
  26 #endif
  27   } nan;
  28
  29 } ieee854_float128;
  30
  31 int
  32 main (int argc, int *argv[])
  33 {
  34   ieee854_float128 x, y, z;
  35
  36   x.nan.negative = 0;
  37   x.nan.exponent = 0x22;
  38   x.nan.quiet_nan = 0;
  39   x.nan.mant_high = 0x1234;
  40   x.nan.mant_low = 0xabcdef;
  41
  42   y.nan.negative = 1;
  43   y.nan.exponent = 0;
  44   y.nan.quiet_nan = 0;
  45   y.nan.mant_high = 0;
  46   y.nan.mant_low = 0;
  47
  48   z.value = __builtin_copysignq (x.value, y.value);
  49
  50   if (z.nan.negative != 1
  51       || z.nan.exponent != 0x22
  52       || z.nan.quiet_nan != 0
  53       || z.nan.mant_high != 0x1234
  54       || z.nan.mant_low != 0xabcdef)
  55     abort ();
  56
  57   return 0;
  58 }