continue
		}
		// Cos(-z)  == Cos(z)
		if f := Cos(-v.in); !cAlike(v.want, f) && !cAlike(v.in, -v.in) {
			t.Errorf("Cos(%g) = %g, want %g", -v.in, f, v.want)
		}
	}
}
func TestCosh(t *testing.T) {
	for i := 0; i < len(vc); i++ {
		if f := Cosh(vc[i]); !cSoclose(cosh[i], f, 2e-15) {
			t.Errorf("Cosh(%g) = %g, want %g", vc[i], f, cosh[i])
		}
	}
	for _, v := range coshSC {