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Javascript - Determine power of 2 (log2)
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| function log2(val) { | |
| return Math.log(val) / Math.LN2; | |
| } | |
| //find the number of flags a musical note gets | |
| alert(log2(8) - 2); //8th notes get 1 flag | |
| alert(log2(128) - 2); //128th notes get 5 flags |
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