module_universal_io/fw/modules/misc/swap.c

#include "swap.h"


// 
uint16_t swap_uint16(uint16_t val) 
{
    return (val << 8) | (val >> 8 );
}

//
int16_t swap_int16(int16_t val) 
{
    return (val << 8) | ((val >> 8) & 0xFF);
}

//
uint32_t swap_uint32(uint32_t val)
{
    val = ((val << 8) & 0xFF00FF00 ) | ((val >> 8) & 0xFF00FF ); 
    return (val << 16) | (val >> 16);
}

//
int32_t swap_int32(int32_t val)
{
    val = ((val << 8) & 0xFF00FF00) | ((val >> 8) & 0xFF00FF ); 
    return (val << 16) | ((val >> 16) & 0xFFFF);
}

//
int64_t swap_int64(int64_t val)
{
    val = ((val << 8) & 0xFF00FF00FF00FF00ULL ) | ((val >> 8) & 0x00FF00FF00FF00FFULL );
    val = ((val << 16) & 0xFFFF0000FFFF0000ULL ) | ((val >> 16) & 0x0000FFFF0000FFFFULL );
    return (val << 32) | ((val >> 32) & 0xFFFFFFFFULL);
}

uint64_t swap_uint64(uint64_t val)
{
    val = ((val << 8) & 0xFF00FF00FF00FF00ULL ) | ((val >> 8) & 0x00FF00FF00FF00FFULL );
    val = ((val << 16) & 0xFFFF0000FFFF0000ULL ) | ((val >> 16) & 0x0000FFFF0000FFFFULL );
    return (val << 32) | (val >> 32);
}