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