@extra-integer/bit-merge v2.0.0

Merges bits from two 32-bit integers, as per mask (xor method).

This is part of package extra-integer.

integer.bitMerge(x, y, m);
// x: first integer
// y: second integer
// m: bit mask (0 => from x)

const integer = require('extra-integer');

integer.bitMerge(0x12, 0x24, 0x0F);
// 20 (0x14)

integer.bitMerge(0x1234, 0xABCD, 0x0F0F);
// 6973 (0x1B3D)

integer.bitMerge(0xAAAA, 0xBBBB, 0x3333);
// 48059 (0xBBBB)

references

• Bit Twiddling Hacks: By Sean Eron Anderson