gcc/testsuite/c-c++-common/dfp/nan-2.c

   1 /* N1150 4: Characteristics of decimal floating types (not explicit)
   2    C99 5.2.4.2.2: Characteristics of floating types.
   3    A few simple checks on arithmetic operations.  Based on nan-1.c with
   4    the consideration of negative zero.  */
   5
   6 #include "dfp-dbg.h"
   7
   8 int main()
   9 {
  10   _Decimal32 d32;
  11   _Decimal64 d64;
  12   _Decimal128 d128;
  13
  14   /* Verify that division by negative zero produces a negative infinity
  15      result.  */
  16   d32 = 123.45f;
  17   if (d32/-0.0df != -__builtin_infd32())
  18     FAILURE
  19   if (123.45df/-0.0df != -__builtin_infd32())
  20     FAILURE
  21
  22   d64 = 123.45f;
  23   if (d64/-0.0dd != -__builtin_infd64())
  24     FAILURE
  25   if (123.45dd/-0.0dd !=  -__builtin_infd64())
  26     FAILURE
  27
  28   d128 = 123.45f;
  29   if (d128/-0.0dl != -__builtin_infd64())
  30     FAILURE
  31   if (123.45dl/-0.0dl != -__builtin_infd128())
  32     FAILURE
  33
  34   d32 = 0.0df;
  35   if (!__builtin_isnand32(-(d32/-0.0df)))
  36     FAILURE
  37   if (!__builtin_isnand32(-(0.0df/-0.0df)))
  38     FAILURE
  39
  40   d64 = 0.0dd;
  41   if (!__builtin_isnand64(-(d64/-0.0dd)))
  42     FAILURE
  43   if (!__builtin_isnand64(-(0.0dd/-0.0dd)))
  44     FAILURE
  45
  46   d128 = 0.0dl;
  47   if (!__builtin_isnand128(-(d128/-0.0dl)))
  48     FAILURE
  49   if (!__builtin_isnand128(-(0.0dl/-0.0dl)))
  50     FAILURE
  51
  52   FINISH
  53 }