Function appendBits

src/third-party/qrcodegen/index.ts:695–700

(val: int, len: int, bb: Array<bit>)

	// Appends the given number of low-order bits of the given value
	// to the given buffer. Requires 0 <= len <= 31 and 0 <= val < 2^len.
	function appendBits(val: int, len: int, bb: Array<bit>): void {
		if (len < 0 || len > 31 || val >>> len != 0)
			throw new RangeError("Value out of range");
		for (let i = len - 1; i >= 0; i--)  // Append bit by bit
			bb.push((val >>> i) & 1);
	}


	// Returns true iff the i'th bit of x is set to 1.