On Wed, 24 Jul 2013, Taylor R Campbell wrote:
Modified Files:
src/sys/external/bsd/drm2/include/linux [riastradh-drm2]: kernel.h
Log Message:
Implement bogus max_t in <linux/kernel.h>.
+/* XXX These will multiply evaluate their arguments. */
+#define max_t(T, X, Y) MAX(X, Y)
#define min_t(T, X, Y) MIN(X, Y)
If we are willing to use the non-standard ({ ... }) syntax, then
these can be written to evaluate their arguments only once, like
this:
#define max_t(T, X, Y) ({ T _x = (X), _y = (Y); (_x > _y ? _x : _y); })
#define min_t(T, X, Y) ({ T _x = (X), _y = (Y); (_x < _y ? _x : _y); })
--apb (Alan Barrett)
