Reversing bits of a word

BitReverse.c

uint8_t BitReverse(uint8_t x)
{
    x = ((x & 0x0F) <<  4) | ((x & 0xF0) >>  4);
    x = ((x & 0x33) <<  2) | ((x & 0xCC) >>  2);
    x = ((x & 0x55) <<  1) | ((x & 0xAA) >>  1);
    
    return x;
}

uint16_t BitReverse(uint16_t x)
{
    x = ((x & 0x00FF) <<  8) | ((x & 0xFF00) >>  8);
    x = ((x & 0x0F0F) <<  4) | ((x & 0xF0F0) >>  4);
    x = ((x & 0x3333) <<  2) | ((x & 0xCCCC) >>  2);
    x = ((x & 0x5555) <<  1) | ((x & 0xAAAA) >>  1);
    
    return x;
}

uint32_t BitReverse(uint32_t x)
{
    x = ( x               << 16) | ( x               >> 16);
    x = ((x & 0x00FF00FF) <<  8) | ((x & 0xFF00FF00) >>  8);
    x = ((x & 0x0F0F0F0F) <<  4) | ((x & 0xF0F0F0F0) >>  4);
    x = ((x & 0x33333333) <<  2) | ((x & 0xCCCCCCCC) >>  2);
    x = ((x & 0x55555555) <<  1) | ((x & 0xAAAAAAAA) >>  1);
    
    return x;
}

uint64_t BitReverse(uint64_t x)
{
    x = ( x                       << 32) | ( x                       >> 32);
    x = ((x & 0x0000FFFF0000FFFF) << 16) | ((x & 0xFFFF0000FFFF0000) >> 16);
    x = ((x & 0x00FF00FF00FF00FF) <<  8) | ((x & 0xFF00FF00FF00FF00) >>  8);
    x = ((x & 0x0F0F0F0F0F0F0F0F) <<  4) | ((x & 0xF0F0F0F0F0F0F0F0) >>  4);
    x = ((x & 0x3333333333333333) <<  2) | ((x & 0xCCCCCCCCCCCCCCCC) >>  2);
    x = ((x & 0x5555555555555555) <<  1) | ((x & 0xAAAAAAAAAAAAAAAA) >>  1);
    
    return x;
}