diff options
Diffstat (limited to 'other/bitOps.cpp')
| -rw-r--r-- | other/bitOps.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/other/bitOps.cpp b/other/bitOps.cpp index 8bad842..ecb94fa 100644 --- a/other/bitOps.cpp +++ b/other/bitOps.cpp @@ -14,3 +14,9 @@ a = -1 a = (1 << n) - 1 // Iteriert über alle Teilmengen einer Bitmaske (außer der leeren Menge). for (int subset = bitmask; subset > 0; subset = (subset - 1) & bitmask) +// Anzahl der gesetzten Bits. +int __builtin_popcount(unsigned int x); +int __builtin_popcountll(unsigned long long x); +// Anzahl der führenden 0-Bits. +int __builtin_clz(unsigned int x); +int __builtin_clzll(unsigned long long x); |