float.c

gcc的组建

/* Area:	ffi_call
   Purpose:	Check return value float.
   Limitations:	none.
   PR:		none.
   Originator:	From the original ffitest.c  */

/* { dg-do run } */

#include "ffitest.h"

static int floating(int a, float b, double c, long double d, int e)
{
  int i;

  i = (int) ((float)a/b + ((float)c/(float)d));

  return i;
}

int main (void)
{
  ffi_cif cif;
  ffi_type *args[MAX_ARGS];
  void *values[MAX_ARGS];
  ffi_arg rint;

  float f;
  signed int si1;
  double d;
  long double ld;
  signed int si2;

  args[0] = &ffi_type_sint;
  values[0] = &si1;
  args[1] = &ffi_type_float;
  values[1] = &f;
  args[2] = &ffi_type_double;
  values[2] = &d;
  args[3] = &ffi_type_longdouble;
  values[3] = &ld;
  args[4] = &ffi_type_sint;
  values[4] = &si2;

  /* Initialize the cif */
  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 5,
		     &ffi_type_sint, args) == FFI_OK);

  si1 = 6;
  f = 3.14159;
  d = (double)1.0/(double)3.0;
  ld = 2.71828182846L;
  si2 = 10;

  floating (si1, f, d, ld, si2);

  ffi_call(&cif, FFI_FN(floating), &rint, values);

  printf ("%d vs %d\n", (int)rint, floating (si1, f, d, ld, si2));

  CHECK(rint == floating(si1, f, d, ld, si2));

  exit (0);
}