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| author | Pierre Habouzit <madcoder@debian.org> | 2007-11-07 10:20:27 (GMT) |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2007-11-12 00:54:15 (GMT) |
| commit | db7244bd5be12e389badb9cec621dbbcfa11f59a (patch) | |
| tree | e9934986eaa77ec543e1809ac35e97c28dc131cd /git-compat-util.h | |
| parent | 40e2524da9f9fb2806a66a694b9aee722ea3ef0a (diff) | |
| download | git-db7244bd5be12e389badb9cec621dbbcfa11f59a.zip git-db7244bd5be12e389badb9cec621dbbcfa11f59a.tar.gz git-db7244bd5be12e389badb9cec621dbbcfa11f59a.tar.bz2 | |
parse-options new features.
options flags:
~~~~~~~~~~~~~
PARSE_OPT_NONEG allow the caller to disallow the negated option to exists.
option types:
~~~~~~~~~~~~
OPTION_BIT: ORs (or NANDs) a mask.
OPTION_SET_INT: force the value to be set to this integer.
OPTION_SET_PTR: force the value to be set to this pointer.
helper:
~~~~~~
HAS_MULTI_BITS (in git-compat-util.h) is a bit-hack to check if an
unsigned integer has more than one bit set, useful to check if conflicting
options have been used.
Signed-off-by: Pierre Habouzit <madcoder@debian.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'git-compat-util.h')
| -rw-r--r-- | git-compat-util.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/git-compat-util.h b/git-compat-util.h index 7b29d1b..f86b19f 100644 --- a/git-compat-util.h +++ b/git-compat-util.h @@ -20,6 +20,7 @@ #endif #define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (sizeof(x) * 8 - (bits)))) +#define HAS_MULTI_BITS(i) ((i) & ((i) - 1)) /* checks if an integer has more than 1 bit set */ /* Approximation of the length of the decimal representation of this type. */ #define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1) |