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, int e)
  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   signed int si2;
  32
  33   args[0] = &ffi_type_sint;
  34   values[0] = &si1;
  35   args[1] = &ffi_type_float;
  36   values[1] = &f;
  37   args[2] = &ffi_type_double;
  38   values[2] = &d;
  39   args[3] = &ffi_type_longdouble;
  40   values[3] = &ld;
  41   args[4] = &ffi_type_sint;
  42   values[4] = &si2;
  43
  44   /* Initialize the cif */
  45   CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 5,
  46                      &ffi_type_sint, args) == FFI_OK);
  47
  48   si1 = 6;
  49   f = 3.14159;
  50   d = (double)1.0/(double)3.0;
  51   ld = 2.71828182846L;
  52   si2 = 10;
  53
  54   floating (si1, f, d, ld, si2);
  55
  56   ffi_call(&cif, FFI_FN(floating), &rint, values);
  57
  58   printf ("%d vs %d\n", (int)rint, floating (si1, f, d, ld, si2));
  59
  60   CHECK(rint == floating(si1, f, d, ld, si2));
  61
  62   exit (0);
  63 }