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new:bits [2018/02/19 12:28] korshun |
new:bits [2018/02/19 12:29] (current) korshun |
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| ===== Powers of two ===== | ===== Powers of two ===== | ||
| - | * ''int npo2(int x)'' -- returns the lowest power of 2 greater or equal to X. | + | * ''int npo2(int x)'' -- returns the next lowest power of 2 greater or equal to X. |
| * ''int bitlog2(int x)'' -- returns the index of the highest used bit, aka integer binary logarithm. Useful to convert flags like ''1<<8 = 256'' back into ''8''. | * ''int bitlog2(int x)'' -- returns the index of the highest used bit, aka integer binary logarithm. Useful to convert flags like ''1<<8 = 256'' back into ''8''. | ||
new/bits.txt ยท Last modified: 2018/02/19 12:29 by korshun