diff options
Diffstat (limited to 'include/ck_cc.h')
| -rw-r--r-- | include/ck_cc.h | 57 |
1 files changed, 26 insertions, 31 deletions
diff --git a/include/ck_cc.h b/include/ck_cc.h index e17dc7b..1b4ff46 100644 --- a/include/ck_cc.h +++ b/include/ck_cc.h @@ -50,6 +50,7 @@ * Container function. * This relies on (compiler) implementation-defined behavior. */ +#ifndef CK_CC_CONTAINER #define CK_CC_CONTAINER(F, T, M, N) \ CK_CC_INLINE static T * \ N(F *p) \ @@ -57,6 +58,7 @@ F *n = p; \ return (T *)(void *)(((char *)n) - ((size_t)&((T *)0)->M)); \ } +#endif #define CK_CC_PAD(x) union { char pad[x]; } @@ -104,41 +106,35 @@ #define CK_CC_TYPEOF(X, DEFAULT) (DEFAULT) #endif -#ifndef CK_F_CC_FFS -#define CK_F_CC_FFS -CK_CC_INLINE static int -ck_cc_ffs(unsigned int x) -{ - unsigned int i; - - if (x == 0) - return 0; - - for (i = 1; (x & 1) == 0; i++, x >>= 1); - - return i; +#define CK_F_CC_FFS_G(L, T) \ +CK_CC_INLINE static int \ +ck_cc_##L(T v) \ +{ \ + unsigned int i; \ + \ + if (v == 0) \ + return 0; \ + \ + for (i = 1; (v & 1) == 0; i++, v >>= 1); \ + return i; \ } -#endif - -#ifndef CK_F_CC_CLZ -#define CK_F_CC_CLZ -#include <ck_limits.h> -CK_CC_INLINE static int -ck_cc_clz(unsigned int x) -{ - unsigned int count, i; +#ifndef CK_F_CC_FFS +#define CK_F_CC_FFS +CK_F_CC_FFS_G(ffs, unsigned int) +#endif /* CK_F_CC_FFS */ - for (count = 0, i = sizeof(unsigned int) * CHAR_BIT; i > 0; count++) { - unsigned int bit = 1U << --i; +#ifndef CK_F_CC_FFSL +#define CK_F_CC_FFSL +CK_F_CC_FFS_G(ffsl, unsigned long) +#endif /* CK_F_CC_FFSL */ - if (x & bit) - break; - } +#ifndef CK_F_CC_FFSLL +#define CK_F_CC_FFSLL +CK_F_CC_FFS_G(ffsll, unsigned long long) +#endif /* CK_F_CC_FFSLL */ - return count; -} -#endif +#undef CK_F_CC_FFS_G #ifndef CK_F_CC_CTZ #define CK_F_CC_CTZ @@ -151,7 +147,6 @@ ck_cc_ctz(unsigned int x) return 0; for (i = 0; (x & 1) == 0; i++, x >>= 1); - return i; } #endif |