func runtime.isNaN

7 uses

	runtime (current package)
		complex.go#L34: 	if isNaN(e) && isNaN(f) {
		complex.go#L42: 		case m == 0 && (!isNaN(a) || !isNaN(b)):
		float.go#L12: func isNaN(f float64) (is bool) {
		float.go#L19: 	return !isNaN(f - f)
		float.go#L24: 	return !isNaN(f) && !isFinite(f)