reverse32 method
Reverse 32 bits.
Implementation
int reverse32() {
var value = (this & 0xffff0000) >> 16 | (this & 0x0000ffff) << 16;
value = (value & 0xff00ff00) >> 8 | (value & 0x00ff00ff) << 8;
value = (value & 0xf0f0f0f0) >> 4 | (value & 0x0f0f0f0f) << 4;
value = (value & 0xcccccccc) >> 2 | (value & 0x33333333) << 2;
value = (value & 0xaaaaaaaa) >> 1 | (value & 0x55555555) << 1;
return value;
}