const math.SmallestNonzeroFloat64

4 uses

	math (current package)
		const.go#L35: 	SmallestNonzeroFloat64 = 4.940656458412465441765687928682213723651e-324 // 1 / 2**(1023 - 1 + 52)

	math/big
		float.go#L1003: 					return -math.SmallestNonzeroFloat64, Below
		float.go#L1005: 				return math.SmallestNonzeroFloat64, Above

	go.opencensus.io/stats/view
		aggregation_data.go#L138: 		Max:                math.SmallestNonzeroFloat64,