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1 // If x is NaN, the result is NaN. |
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2 assertEq(Math.sign(NaN), NaN); |
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3 |
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4 // If x is −0, the result is −0. |
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5 assertEq(Math.sign(-0), -0); |
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6 |
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7 // If x is +0, the result is +0. |
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8 assertEq(Math.sign(+0), +0); |
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9 |
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10 // If x is negative and not −0, the result is −1. |
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11 assertEq(Math.sign(-Number.MIN_VALUE), -1); |
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12 assertEq(Math.sign(-Number.MAX_VALUE), -1); |
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13 assertEq(Math.sign(-Infinity), -1); |
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14 |
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15 for (var i = -1; i > -20; i--) |
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16 assertEq(Math.sign(i), -1); |
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17 |
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18 assertEq(Math.sign(-1e-300), -1); |
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19 assertEq(Math.sign(-0x80000000), -1); |
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20 |
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21 // If x is positive and not +0, the result is +1. |
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22 assertEq(Math.sign(Number.MIN_VALUE), +1); |
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23 assertEq(Math.sign(Number.MAX_VALUE), +1); |
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24 assertEq(Math.sign(Infinity), +1); |
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25 |
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26 for (var i = 1; i < 20; i++) |
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27 assertEq(Math.sign(i), +1); |
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28 |
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29 assertEq(Math.sign(+1e-300), +1); |
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30 assertEq(Math.sign(0x80000000), +1); |
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31 assertEq(Math.sign(0xffffffff), +1); |
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32 |
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33 |
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34 reportCompare(0, 0, "ok"); |