| 1 | TODO: ffs/clz | 1 | TODO: ffs/clz |
|---|---|---|---|
| 2 | 64 bit variants of everything | 2 | 64 bit variants of everything |
| 3 | TODO: examples from X for clz/ctz | 3 | TODO: examples from X for clz/ctz |
| 4 | TODO: arithmetic right shift | ||
| 5 | TODO: bit reversal | ||
| 6 | TODO: template/generic functions for x32/x64 and so on | ||
| 7 | TODO: generalised shift | ||
| 8 | unsigned long gensh(unsigned long v, int x) { | ||
| 9 | int a, b; | ||
| 10 | a = (v << x) & -(((unsigned int)x) < 32); | ||
| 11 | x = -x; | ||
| 12 | b = (v >> x) & -(((unsigned int)x) < 32); | ||
| 13 | return a|b; | ||
| 14 | } |
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