data_types.c
author Markus Bröker <mbroeker@largo.dyndns.tv>
Fri, 27 Dec 2013 16:00:09 +0100
changeset 167 7c6b221900bf
parent 77 49e0babccb23
child 169 df7c720bcaa6
permissions -rw-r--r--
Proper Datatypes to leave the 80's

/**
 * data_types.c
 * Copyright (C) 2008 Markus Broeker
 */

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <limits.h>
#include <float.h>

typedef unsigned char UCHAR;
typedef signed char SCHAR;
typedef unsigned short USHORT;
typedef signed short SSHORT;
typedef unsigned int UINT;
typedef signed int SINT;
typedef unsigned long ULONG;
typedef signed long SLONG;

#ifdef __USE_ISOC99
typedef unsigned long long ULLONG;

typedef signed long long SLLONG;
#endif

int main (int argc, char **argv)
{
    printf ("%20s %4s %20s %25s\n\n", "Type", "BITS", "MIN", "MAX");

    printf ("%20s %4d %20d %25d\n", "   signed char", 8 * sizeof (SCHAR), CHAR_MIN, CHAR_MAX);
    printf ("%20s %4d %20d %25d\n", "  signed short", 8 * sizeof (SSHORT), SHRT_MIN, SHRT_MAX);
    printf ("%20s %4d %20d %25d\n", "    signed int", 8 * sizeof (SINT), INT_MIN, INT_MAX);
    printf ("%20s %4d %20ld %25ld\n", "   signed long", 8 * sizeof (SLONG), LONG_MIN, LONG_MAX);

#ifdef __USE_ISOC99
    printf ("%20s %4d %20lld %25lld\n\n", "  signed llong", 8 * sizeof (SLLONG), (SLLONG) LLONG_MIN, LLONG_MAX);
#endif

    printf ("%20s %4d %20d %25u\n", " unsigned char", 8 * sizeof (UCHAR), 0, UCHAR_MAX);
    printf ("%20s %4d %20d %25u\n", "unsigned short", 8 * sizeof (USHORT), 0, USHRT_MAX);

    printf ("%20s %4d %20d %25u\n", "  unsigned int", 8 * sizeof (UINT), 0, UINT_MAX);
    printf ("%20s %4d %20lu %25lu\n", " unsigned long", 8 * sizeof (ULONG), 0UL, ULONG_MAX);

#ifdef __USE_ISOC99
    printf ("%20s %4d %20llu %25llu\n", "unsigned llong", 8 * sizeof (ULLONG), 0ULL, ULLONG_MAX);
#endif

#ifdef __USE_ISOC99
    printf ("\n%20s %4d %20d  %20d\n", "_Bool", 8 * sizeof (_Bool), 0, 1);
#endif

    printf ("\n%20s %4d \t\t %#1.2g \t\t %#1.2g\n", "float", 8 * sizeof (float), (double)FLT_MIN, (double)FLT_MAX);
    printf ("%20s %4d \t\t %#1.2g \t\t %#1.2g\n", "double", 8 * sizeof (double), (double)DBL_MIN, (double)DBL_MAX);

    return EXIT_SUCCESS;
}