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by jheriko
4452 days ago
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its not faster and the accuracy improvement is more of a curiosity than of real value. infact on modern desktop/console hardware invsqrt hack is really bad. it causes type aliasing which is 'expensive' in native software terms. the x86(-64) chips underlying them all now has a dedicated instruction for this, as do the PPCs that came in the generation before... still of value on ARM though which is becoming more and more important. |
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