michael@0: // Properties of Math.acosh that are guaranteed by the spec.
michael@0: 
michael@0: // If x is NaN, the result is NaN.
michael@0: assertEq(Math.acosh(NaN), NaN);
michael@0: 
michael@0: // If x is less than 1, the result is NaN.
michael@0: assertEq(Math.acosh(ONE_MINUS_EPSILON), NaN);
michael@0: assertEq(Math.acosh(Number.MIN_VALUE), NaN);
michael@0: assertEq(Math.acosh(+0), NaN);
michael@0: assertEq(Math.acosh(-0), NaN);
michael@0: assertEq(Math.acosh(-Number.MIN_VALUE), NaN);
michael@0: assertEq(Math.acosh(-1), NaN);
michael@0: assertEq(Math.acosh(-Number.MAX_VALUE), NaN);
michael@0: assertEq(Math.acosh(-Infinity), NaN);
michael@0: 
michael@0: for (var i = -20; i < 1; i++)
michael@0:     assertEq(Math.acosh(i), NaN);
michael@0: 
michael@0: // If x is 1, the result is +0.
michael@0: assertEq(Math.acosh(1), +0);
michael@0: 
michael@0: // If x is +∞, the result is +∞.
michael@0: assertEq(Math.acosh(Number.POSITIVE_INFINITY), Number.POSITIVE_INFINITY);
michael@0: 
michael@0: 
michael@0: reportCompare(0, 0, "ok");