Re: [libvirt] [PATCH 1/3] virutil: Introduce a new macro named CLAMP.
On 05/15/2014 03:39 AM, Dongsheng Yang wrote:
This patch introduce a new macro to return a
value clamped to a given range.
[when sending a series, it's nice to include a cover letter with 'git
send-email --cover-letter to generate the 0/N message that all other
messages in the series reply to]
Signed-off-by: Dongsheng Yang <yangds.fnst(a)cn.fujitsu.com>
---
src/util/virutil.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/src/util/virutil.h b/src/util/virutil.h
index 2bb74e2..e8536d8 100644
--- a/src/util/virutil.h
+++ b/src/util/virutil.h
@@ -37,6 +37,12 @@
# ifndef MAX
# define MAX(a, b) ((a) > (b) ? (a) : (b))
# endif
+# ifndef CLAMP
+# define CLAMP(v, min, max) ({ \
This is gcc-specific. I'd rather avoid it, and stick to portable C99
code, if possible - which means doing this as an inline function rather
than a macro.
--
Eric Blake eblake redhat com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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