libffi/testsuite/libffi.call/float.c

   1 /* Area:        ffi_call
   2    Purpose:     Check return value float.
   3    Limitations: none.
   4    PR:          none.
   5    Originator:  From the original ffitest.c  */
   6
   7 /* { dg-do run } */
   8
   9 #include "ffitest.h"
  10
  11 static int floating(int a, float b, double c, long double d)
  12 {
  13   int i;
  14
  15   i = (int) ((float)a/b + ((float)c/(float)d));
  16
  17   return i;
  18 }
  19
  20 int main (void)
  21 {
  22   ffi_cif cif;
  23   ffi_type *args[MAX_ARGS];
  24   void *values[MAX_ARGS];
  25   ffi_arg rint;
  26
  27   float f;
  28   signed int si1;
  29   double d;
  30   long double ld;
  31
  32   args[0] = &ffi_type_sint;
  33   values[0] = &si1;
  34   args[1] = &ffi_type_float;
  35   values[1] = &f;
  36   args[2] = &ffi_type_double;
  37   values[2] = &d;
  38   args[3] = &ffi_type_longdouble;
  39   values[3] = &ld;
  40
  41   /* Initialize the cif */
  42   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 4,
  43                      &ffi_type_sint, args) == FFI_OK);
  44
  45   si1 = 6;
  46   f = 3.14159;
  47   d = (double)1.0/(double)3.0;
  48   ld = 2.71828182846L;
  49
  50   floating (si1, f, d, ld);
  51
  52   ffi_call(&cif, FFI_FN(floating), &rint, values);
  53
  54   printf ("%d vs %d\n", (int)rint, floating (si1, f, d, ld));
  55
  56   CHECK((int)rint == floating(si1, f, d, ld));
  57
  58   exit (0);
  59 }