toLength.js (1203B)
1 // |reftest| skip-if(!xulRuntime.shell) 2 var BUGNUMBER = 1040196; 3 var summary = 'ToLength'; 4 5 print(BUGNUMBER + ": " + summary); 6 7 var ToLength = getSelfHostedValue('ToLength'); 8 9 // Negative operands 10 assertEq(ToLength(-0), 0); 11 assertEq(ToLength(-1), 0); 12 assertEq(ToLength(-2), 0); 13 assertEq(ToLength(-1 * Math.pow(2, 56)), 0); 14 assertEq(ToLength(-1 * Math.pow(2, 56) - 2), 0); 15 assertEq(ToLength(-1 * Math.pow(2, 56) - 2.4444), 0); 16 assertEq(ToLength(-Infinity), 0); 17 18 // Small non-negative operands 19 assertEq(ToLength(0), 0); 20 assertEq(ToLength(1), 1); 21 assertEq(ToLength(2), 2); 22 assertEq(ToLength(3.3), 3); 23 assertEq(ToLength(10/3), 3); 24 25 // Large non-negative operands 26 var maxLength = Math.pow(2, 53) - 1; 27 assertEq(ToLength(maxLength - 1), maxLength - 1); 28 assertEq(ToLength(maxLength - 0.0000001), maxLength); 29 assertEq(ToLength(maxLength), maxLength); 30 assertEq(ToLength(maxLength + 0.00000000000001), maxLength); 31 assertEq(ToLength(maxLength + 1), maxLength); 32 assertEq(ToLength(maxLength + 2), maxLength); 33 assertEq(ToLength(Math.pow(2,54)), maxLength); 34 assertEq(ToLength(Math.pow(2,64)), maxLength); 35 assertEq(ToLength(Infinity), maxLength); 36 37 // NaN operand 38 assertEq(ToLength(NaN), 0); 39 40 41 reportCompare(0, 0, "ok");