BigInt.asUintN()

The BigInt.asUintN static method is used to wrap a BigInt value to an unsigned integer between 0 and 2^width-1.

BigInt.asUintN(width, bigint);

width

The amount of bits available for the integer size.

bigint

The integer to clamp to fit into the supplied bits.

The value of bigint modulo 2^width as an unsigned integer.

The BigInt.asUintN() method can be useful to stay in the range of 64-bit arithmetic.

const max = 2n ** 64n - 1n;

BigInt.asUintN(64, max);
// ↪ 18446744073709551615n

BigInt.asUintN(64, max + 1n);
// ↪ 0n
// zero because of overflow

• BigInt
• BigInt.asIntN()