gcc/testsuite/gcc.dg/dfp/call-by-value.c

   1 /* C99 6.9.1(9) Function definitions; parameter has automatic storage.
   2
   3    Test that actual parameters are passed by value and that modifications
   4    made within functions are lost on function return.  */
   5
   6 #include "dfp-dbg.h"
   7
   8 int foo32 (_Decimal32 z)
   9 {
  10   z = z + 1.0df;
  11 }
  12
  13 int foo64 (_Decimal64 z)
  14 {
  15   z = z + 1.0dd;
  16 }
  17
  18 int foo128 (_Decimal128 z)
  19 {
  20   z = z + 1.0dl;
  21 }
  22
  23 int
  24 main ()
  25 {
  26   _Decimal32 d32 = 1.1df;
  27   _Decimal64 d64 = 1.2dd;
  28   _Decimal128 d128 = 1.3dl;
  29
  30   foo32 (d32);
  31   if (d32 != 1.1df)
  32     FAILURE
  33
  34   foo64 (d64);
  35   if (d64 != 1.2dd)
  36     FAILURE
  37
  38   foo128 (d128);
  39   if (d128 != 1.3dl)
  40     FAILURE
  41
  42   FINISH
  43 }