Author: ngie Date: Thu Jan 12 09:01:14 2017 New Revision: 311972 URL: https://svnweb.freebsd.org/changeset/base/311972
Log: Add __BIT and __BITS macros from NetBSD to help support new testcases MFC after: 1 week Modified: head/lib/libnetbsd/sys/cdefs.h Modified: head/lib/libnetbsd/sys/cdefs.h ============================================================================== --- head/lib/libnetbsd/sys/cdefs.h Thu Jan 12 08:53:10 2017 (r311971) +++ head/lib/libnetbsd/sys/cdefs.h Thu Jan 12 09:01:14 2017 (r311972) @@ -71,4 +71,13 @@ */ #define __arraycount(__x) (sizeof(__x) / sizeof(__x[0])) +/* __BIT(n): nth bit, where __BIT(0) == 0x1. */ +#define __BIT(__n) \ + (((uintmax_t)(__n) >= NBBY * sizeof(uintmax_t)) ? 0 : \ + ((uintmax_t)1 << (uintmax_t)((__n) & (NBBY * sizeof(uintmax_t) - 1)))) + +/* __BITS(m, n): bits m through n, m < n. */ +#define __BITS(__m, __n) \ + ((__BIT(MAX((__m), (__n)) + 1) - 1) ^ (__BIT(MIN((__m), (__n))) - 1)) + #endif /* _LIBNETBSD_SYS_CDEFS_H_ */ _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
