The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/tests/ecma_6/Math/trunc.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,50 @@
     1.4 +// If x is NaN, the result is NaN.
     1.5 +assertEq(Math.trunc(NaN), NaN);
     1.6 +
     1.7 +// If x is −0, the result is −0.
     1.8 +assertEq(Math.trunc(-0), -0);
     1.9 +
    1.10 +// If x is +0, the result is +0.
    1.11 +assertEq(Math.trunc(+0), +0);
    1.12 +
    1.13 +// If x is +∞, the result is +∞.
    1.14 +assertEq(Math.trunc(Infinity), Infinity);
    1.15 +
    1.16 +// If x is −∞, the result is −∞.
    1.17 +assertEq(Math.trunc(-Infinity), -Infinity);
    1.18 +
    1.19 +// Other boundary cases.
    1.20 +var MAX_NONINTEGER_VALUE       = 4503599627370495.5;
    1.21 +var TRUNC_MAX_NONINTEGER_VALUE = 4503599627370495;
    1.22 +
    1.23 +assertEq(Math.trunc(Number.MIN_VALUE), +0);
    1.24 +assertEq(Math.trunc(ONE_MINUS_EPSILON), +0);
    1.25 +assertEq(Math.trunc(ONE_PLUS_EPSILON), 1);
    1.26 +assertEq(Math.trunc(MAX_NONINTEGER_VALUE), TRUNC_MAX_NONINTEGER_VALUE);
    1.27 +assertEq(Math.trunc(Number.MAX_VALUE), Number.MAX_VALUE);
    1.28 +
    1.29 +assertEq(Math.trunc(-Number.MIN_VALUE), -0);
    1.30 +assertEq(Math.trunc(-ONE_MINUS_EPSILON), -0);
    1.31 +assertEq(Math.trunc(-ONE_PLUS_EPSILON), -1);
    1.32 +assertEq(Math.trunc(-MAX_NONINTEGER_VALUE), -TRUNC_MAX_NONINTEGER_VALUE);
    1.33 +assertEq(Math.trunc(-Number.MAX_VALUE), -Number.MAX_VALUE);
    1.34 +
    1.35 +// Other cases.
    1.36 +for (var i = 1, f = 1.1; i < 20; i++, f += 1.0)
    1.37 +    assertEq(Math.trunc(f), i);
    1.38 +
    1.39 +for (var i = -1, f = -1.1; i > -20; i--, f -= 1.0)
    1.40 +    assertEq(Math.trunc(f), i);
    1.41 +
    1.42 +assertEq(Math.trunc(1e40 + 0.5), 1e40);
    1.43 +
    1.44 +assertEq(Math.trunc(1e300), 1e300);
    1.45 +assertEq(Math.trunc(-1e300), -1e300);
    1.46 +assertEq(Math.trunc(1e-300), 0);
    1.47 +assertEq(Math.trunc(-1e-300), -0);
    1.48 +
    1.49 +assertEq(Math.trunc(+0.9999), +0);
    1.50 +assertEq(Math.trunc(-0.9999), -0);
    1.51 +
    1.52 +
    1.53 +reportCompare(0, 0, "ok");