const time.stdMask

5 uses

	time (current package)
		format.go#L153: 	stdMask           = 1<<stdArgShift - 1 // mask out argument
		format.go#L462: 		trim      = std&stdMask == stdFracSecond9
		format.go#L637: 		switch std & stdMask {
		format.go#L998: 		switch std & stdMask {
		format.go#L1078: 				std &= stdMask