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path: root/contrib/restricted/libffi/testsuite/libffi.call/promotion.c
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/* Area:	ffi_call 
   Purpose:	Promotion test. 
   Limitations:	none. 
   PR:		none. 
   Originator:	From the original ffitest.c  */ 
 
/* { dg-do run } */ 
#include "ffitest.h" 
static int promotion(signed char sc, signed short ss, 
		     unsigned char uc, unsigned short us) 
{ 
  int r = (int) sc + (int) ss + (int) uc + (int) us; 
 
  return r; 
} 
 
int main (void) 
{ 
  ffi_cif cif; 
  ffi_type *args[MAX_ARGS]; 
  void *values[MAX_ARGS]; 
  ffi_arg rint; 
  signed char sc; 
  unsigned char uc; 
  signed short ss; 
  unsigned short us; 
  unsigned long ul; 
 
  args[0] = &ffi_type_schar; 
  args[1] = &ffi_type_sshort; 
  args[2] = &ffi_type_uchar; 
  args[3] = &ffi_type_ushort; 
  values[0] = ≻ 
  values[1] = &ss; 
  values[2] = &uc; 
  values[3] = &us; 
 
  /* Initialize the cif */ 
  CHECK(ffi_prep_cif(&cif, FFI_DEFAULT_ABI, 4, 
		     &ffi_type_sint, args) == FFI_OK); 
 
  us = 0; 
  ul = 0; 
 
  for (sc = (signed char) -127; 
       sc <= (signed char) 120; sc += 1) 
    for (ss = -30000; ss <= 30000; ss += 10000) 
      for (uc = (unsigned char) 0; 
	   uc <= (unsigned char) 200; uc += 20) 
	for (us = 0; us <= 60000; us += 10000) 
	  { 
	    ul++; 
	    ffi_call(&cif, FFI_FN(promotion), &rint, values); 
	    CHECK((int)rint == (signed char) sc + (signed short) ss + 
		  (unsigned char) uc + (unsigned short) us); 
	  } 
  printf("%lu promotion tests run\n", ul); 
  exit(0); 
}