ceilingToPowerOfTwo function
Find the closest perfect power of two that is larger or equal to the provided integer.
Implementation
int ceilingToPowerOfTwo(int number) {
if (number == int64MinValue) {
return 0;
}
const maxPowerOfTwo = 0x4000000000000000;
if (number > maxPowerOfTwo) {
throw ArgumentError('Value ${number} is out of range.');
}
number--;
number |= number >> 1;
number |= number >> 2;
number |= number >> 4;
number |= number >> 8;
number |= number >> 16;
number |= number >> 32;
return number + 1;
}