equal static method
Implementation
static int equal(int b, int c) {
final int ub = b & 0xFF;
final int uc = c & 0xFF;
final int x = ub ^ uc;
BigInt y = BigInt.from(x) & BigInt.from(0xFFFFFFFF);
y = y - BigInt.one;
y = y >> 31;
return (y & BigInt.one).toInt();
}