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