bitwise_reverse32

COPY/// @func   bitwise_reverse32(n)
///
/// @desc   Returns the given 32-bit integer with bits in reverse order.
///
/// @param  {real}      n           32-bit integer
///
/// @return {real}      given integer with bits reversed
///
/// GMLscripts.com/license

function bitwise_reverse32(n)
{
    n = (n & 0x55555555) <<  1 | (n & 0xAAAAAAAA) >>  1;
    n = (n & 0x33333333) <<  2 | (n & 0xCCCCCCCC) >>  2;
    n = (n & 0x0F0F0F0F) <<  4 | (n & 0xF0F0F0F0) >>  4;
    n = (n & 0x00FF00FF) <<  8 | (n & 0xFF00FF00) >>  8;
    n = (n & 0x0000FFFF) << 16 | (n & 0xFFFF0000) >> 16;
    return n;
}