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Diffstat (limited to '')
| -rw-r--r-- | js/src/tests/non262/Math/log1p-exact.js | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/tests/non262/Math/log1p-exact.js b/js/src/tests/non262/Math/log1p-exact.js new file mode 100644 index 0000000000..bec11b6597 --- /dev/null +++ b/js/src/tests/non262/Math/log1p-exact.js @@ -0,0 +1,29 @@ +// Properties of Math.log1p that are guaranteed by the spec. + +// If x is NaN, the result is NaN. +assertEq(Math.log1p(NaN), NaN); + +// If x is less than -1, the result is NaN. +assertEq(Math.log1p(-1 - 1e-10), NaN); +assertEq(Math.log1p(-1 - 1e-5), NaN); +assertEq(Math.log1p(-1 - 1e-1), NaN); +assertEq(Math.log1p(-ONE_PLUS_EPSILON), NaN); + +for (var i = -2; i > -20; i--) + assertEq(Math.log1p(i), NaN); + +// If x is -1, the result is -∞. +assertEq(Math.log1p(-1), -Infinity); + +// If x is +0, the result is +0. +assertEq(Math.log1p(+0), +0); + +// If x is −0, the result is −0. +assertEq(Math.log1p(-0), -0); + +// If x is +∞, the result is +∞. +assertEq(Math.log1p(Infinity), Infinity); + + +reportCompare(0, 0, "ok"); + |