Function normalizeCapacity

map.go:315–317

normalizeCapacity rounds capacity to the next power of 2.

(capacity uint32)

// normalizeCapacity rounds capacity to the next power of 2.
func normalizeCapacity(capacity uint32) uint32 {
	return uint32(1) << min(bits.Len32(capacity-1), 31)
}

// New constructs a new Map with the specified initial capacity. If
// initialCapacity is 0 the map will start out with zero capacity and will