michael@0: // Properties of Math.tanh that are guaranteed by the spec.
michael@0: 
michael@0: // If x is NaN, the result is NaN.
michael@0: assertEq(Math.tanh(NaN), NaN);
michael@0: 
michael@0: // If x is +0, the result is +0.
michael@0: assertEq(Math.tanh(+0), +0);
michael@0: 
michael@0: // If x is −0, the result is −0.
michael@0: assertEq(Math.tanh(-0), -0);
michael@0: 
michael@0: // If x is +∞, the result is +1.
michael@0: assertEq(Math.tanh(Number.POSITIVE_INFINITY), +1);
michael@0: 
michael@0: // If x is −∞, the result is -1.
michael@0: assertEq(Math.tanh(Number.NEGATIVE_INFINITY), -1);
michael@0: 
michael@0: 
michael@0: reportCompare(0, 0, "ok");