function isOPInt(value) {
  return (
    v.is(v.number(), value) &&
    (value === OPS.OP_0 ||
      (value >= OPS.OP_1 && value <= OPS.OP_16) ||
      value === OPS.OP_1NEGATE)
  );
}
Determines if a value corresponds to an OP_INT opcode.

@param value - The opcode to check.
@returns True if the value is an OP_INT, false otherwise.