const math.pp2

3 uses

	math (current package)
		erf.go#L126: 	pp2  = -2.84817495755985104766e-02 // 0xBF9D2A51DBD7194F
		erf.go#L225: 			r := pp0 + z*(pp1+z*(pp2+z*(pp3+z*pp4)))
		erf.go#L303: 			r := pp0 + z*(pp1+z*(pp2+z*(pp3+z*pp4)))