9 lines
159 B
JavaScript
9 lines
159 B
JavaScript
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//wow.
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function fastInvSqrt(x) {
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var xhalf = 0.5 * x;
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var i = x;
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i = i * (1.5 - xhalf * i * i);
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i = i * (1.5 - xhalf * i * i);
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return i;
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}
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