source: buchla-68k/lib700/micons.c@ fa38804

/*
   =============================================================================
        micons.c -- motorola / intel format conversion functions
        Version 3 -- 1987-06-11 -- D.N. Lynx Crowe

        short
        micons(wi)
        short wi;

                Convert between motorola and intel format for a short.

        int
        miconi(wi)
        int wi;

                Convert between motorola and intel format for an int.

        long
        miconl(wi)
        long wi;

                Convert between motorola and intel format for a long.
   =============================================================================
*/

#include "ram.h"

#define TESTER  0       /* define non-zero for a test program */

/*
   =============================================================================
        micons(wi) -- Convert between motorola and intel format for a short.
   =============================================================================
*/

int16_t micons(int16_t wi)
{
        return((int16_t)( ((wi << 8) & 0xFF00) | ((wi >> 8) & 0x00FF) ) );
}

/*
   =============================================================================
        miconi(wi) -- Convert between motorola and intel format for an int.
   =============================================================================
*/

int16_t miconi(int16_t wi)
{
        if (sizeof (int16_t) == 4)
                return( ((wi << 24) & 0xFF000000L) | ((wi << 8) & 0x00FF0000L) |
                        ((wi >> 8) & 0x0000FF00L) | ((wi >> 24) & 0x000000FFL) );
        else
                return(((wi << 8) & 0xFF00) | ((wi >> 8) & 0x00FF));
}

/*
   =============================================================================
        miconl(wi) -- Convert between motorola and intel format for a long.
   =============================================================================
*/

int32_t miconl(int32_t wi)
{
        return( ((wi << 24) & 0xFF000000L) | ((wi << 8) & 0x00FF0000L) |
                ((wi >> 8) & 0x0000FF00L) | ((wi >> 24) & 0x000000FFL) );
}

#if     TESTER

#include "ram.h"

/*
   =============================================================================
        test program for micon functions
   =============================================================================
*/

main()
{
        printf("micons(0x1234) returned 0x%04x\n", micons(0x1234));

        if (sizeof (int) == 4)
                printf("miconi(0x1234) returned 0x%04x\n", miconi(0x1234));
        else
                printf("miconi(0x12345678L) returned 0x%08lx\n",
                        miconi(0x12345678L));

        printf("miconl(0x12345678L) returned 0x%08lx\n",
                miconl(0x12345678L));
}

#endif