gcc/testsuite/gcc.target/powerpc/bfp/scalar-insert-exp-15.c

   1 /* { dg-do run { target { powerpc*-*-* } } } */
   2 /* { dg-require-effective-target lp64 } */
   3 /* { dg-require-effective-target p9vector_hw } */
   4 /* { dg-options "-mdejagnu-cpu=power9" } */
   5
   6 /* This test should succeed only on 64-bit configurations.  */
   7 #include <altivec.h>
   8 #include <stdlib.h>
   9
  10 __ieee128
  11 insert_exponent (__ieee128 *significand_p,
  12                  unsigned long long int *exponent_p)
  13 {
  14   __ieee128 significand = *significand_p;
  15   unsigned long long int exponent = *exponent_p;
  16
  17   return scalar_insert_exp (significand, exponent);
  18 }
  19
  20 #define BIAS_FOR_QUAD_EXP 16383
  21
  22 int
  23 main ()
  24 {
  25   /* most-significant bit @13, shift it to position 113 */
  26   unsigned __int128 significand_1 = ((unsigned __int128) 0x1100) << 100;
  27   unsigned __int128 significand_2 = ((unsigned __int128) 0x1101) << 100;
  28   unsigned long long int exponent_1 = 126 + BIAS_FOR_QUAD_EXP;
  29   unsigned long long int exponent_2 = 124 + BIAS_FOR_QUAD_EXP;
  30
  31   __ieee128 *significand_1_ptr = (__ieee128 *) &significand_1;
  32   __ieee128 *significand_2_ptr = (__ieee128 *) &significand_2;
  33
  34   __ieee128 x = (__ieee128) (((__int128) 0x1100LL) << 114);
  35   __ieee128 z = (__ieee128) (((__int128) 0x1101LL) << 112);
  36
  37   if (insert_exponent (significand_1_ptr, &exponent_1) != x)
  38     abort ();
  39   if (insert_exponent (significand_2_ptr, &exponent_2) != z)
  40     abort ();
  41   return 0;
  42 }