bitops.h 1.1 KB

1234567891011121314151617181920212223242526272829303132333435363738394041424344
  1. /*
  2. * Copyright (C) 2011 The Android Open Source Project
  3. *
  4. * Licensed under the Apache License, Version 2.0 (the "License");
  5. * you may not use this file except in compliance with the License.
  6. * You may obtain a copy of the License at
  7. *
  8. * http://www.apache.org/licenses/LICENSE-2.0
  9. *
  10. * Unless required by applicable law or agreed to in writing, software
  11. * distributed under the License is distributed on an "AS IS" BASIS,
  12. * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13. * See the License for the specific language governing permissions and
  14. * limitations under the License.
  15. */
  16. #ifndef COCOS_CUTILS_BITOPS_H
  17. #define COCOS_CUTILS_BITOPS_H
  18. #include <stdbool.h>
  19. #include <string.h>
  20. #include <strings.h>
  21. #include <sys/cdefs.h>
  22. __BEGIN_DECLS
  23. static inline int popcount(unsigned int x)
  24. {
  25. return __builtin_popcount(x);
  26. }
  27. static inline int popcountl(unsigned long x)
  28. {
  29. return __builtin_popcountl(x);
  30. }
  31. static inline int popcountll(unsigned long long x)
  32. {
  33. return __builtin_popcountll(x);
  34. }
  35. __END_DECLS
  36. #endif /* COCOS_CUTILS_BITOPS_H */