modulo function

int modulo(
  1. int value,
  2. int modulus
)

Modulo that handles negative (e.g. -1 % 7 → 6). Roadmap #129. Audited: 2026-06-12 11:26 EDT

Implementation

int modulo(int value, int modulus) {
  if (modulus <= 0) throw ArgumentError(_kErrModulusPositive, _kParamModulus);
  final int r = value % modulus;
  return r < 0 ? r + modulus : r;
}