const math/bits.m2

6 uses

	math/bits (current package)
		bits.go#L106: const m2 = 0x0f0f0f0f0f0f0f0f // 00001111 ...
		bits.go#L157: 	x = (x>>4 + x) & (m2 & m)
		bits.go#L242: 	x = x>>4&(m2&m) | x&(m2&m)<<4
		bits.go#L251: 	x = x>>4&(m2&m) | x&(m2&m)<<4