michael@0: // Properties of Math.log1p that are guaranteed by the spec.
michael@0: 
michael@0: // If x is NaN, the result is NaN.
michael@0: assertEq(Math.log1p(NaN), NaN);
michael@0: 
michael@0: // If x is less than -1, the result is NaN.
michael@0: assertEq(Math.log1p(-1 - 1e-10), NaN);
michael@0: assertEq(Math.log1p(-1 - 1e-5), NaN);
michael@0: assertEq(Math.log1p(-1 - 1e-1), NaN);
michael@0: assertEq(Math.log1p(-ONE_PLUS_EPSILON), NaN);
michael@0: 
michael@0: for (var i = -2; i > -20; i--)
michael@0:     assertEq(Math.log1p(i), NaN);
michael@0: 
michael@0: // If x is -1, the result is -∞.
michael@0: assertEq(Math.log1p(-1), -Infinity);
michael@0: 
michael@0: // If x is +0, the result is +0.
michael@0: assertEq(Math.log1p(+0), +0);
michael@0: 
michael@0: // If x is −0, the result is −0.
michael@0: assertEq(Math.log1p(-0), -0);
michael@0: 
michael@0: // If x is +∞, the result is +∞.
michael@0: assertEq(Math.log1p(Infinity), Infinity);
michael@0: 
michael@0: 
michael@0: reportCompare(0, 0, "ok");
michael@0: