#include "stdio.h"

#if ULONG_MAX > 4294967295U
typedef long intType;
#define INT_SUFFIX(num) num ## L
#define SUFFIX "L"
#define INTTYPE_FORMAT "l"
#define MESSAGE "Using long.\n"
#else
typedef long long intType;
#define INT_SUFFIX(num) num ## LL
#define SUFFIX "LL"
#define INTTYPE_FORMAT "ll"
#define MESSAGE "Using long long.\n"
#endif

#define F_D(width) "%" #width INTTYPE_FORMAT "d"

#if 0
/* Allow the compiler to compute the division. */
#define intExpr(num)  (num)
#else
/* The division will (probably) be done at runtime. */
intType intExpr (intType number)  { return number; }
#endif


int main (int argc, char **argv)
{
  printf("sizeof(long): %lu\n", sizeof(long));
  printf("sizeof(long long): %lu\n", sizeof(long long));
  printf(MESSAGE);
  printf("-9223372036854775808" SUFFIX " / -2147483649" SUFFIX " = " F_D(20) " expected:  4294967294\n",
         intExpr(INT_SUFFIX(-9223372036854775807)-1) / INT_SUFFIX(-2147483649));
  printf("-9223372036854775808" SUFFIX " / -2147483648" SUFFIX " = " F_D(20) " expected:  4294967296\n",
         intExpr(INT_SUFFIX(-9223372036854775807)-1) / INT_SUFFIX(-2147483648));
  printf(" 9223372036854775807" SUFFIX " / -2147483649" SUFFIX " = " F_D(20) " expected: -4294967294\n",
         intExpr(INT_SUFFIX( 9223372036854775807))    / INT_SUFFIX(-2147483649));
  printf(" 9223372036854775807" SUFFIX " / -2147483648" SUFFIX " = " F_D(20) " expected: -4294967295\n",
         intExpr(INT_SUFFIX( 9223372036854775807))    / INT_SUFFIX(-2147483648));
  printf("-9223372036854775808" SUFFIX " %% -2147483649" SUFFIX " = " F_D(20) " expected:          -2\n",
         intExpr(INT_SUFFIX(-9223372036854775807)-1) % INT_SUFFIX(-2147483649));
  printf("-9223372036854775808" SUFFIX " %% -2147483648" SUFFIX " = " F_D(20) " expected:           0\n",
         intExpr(INT_SUFFIX(-9223372036854775807)-1) % INT_SUFFIX(-2147483648));
  printf(" 9223372036854775807" SUFFIX " %% -2147483649" SUFFIX " = " F_D(20) " expected:           1\n",
         intExpr(INT_SUFFIX( 9223372036854775807))    % INT_SUFFIX(-2147483649));
  printf(" 9223372036854775807" SUFFIX " %% -2147483648" SUFFIX " = " F_D(20) " expected:  2147483647\n",
         intExpr(INT_SUFFIX( 9223372036854775807))    % INT_SUFFIX(-2147483648));
  return 0;
}