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Add IMPLY() and EQUIV() macros

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Added for upstream compatibility, they are of the form:

* IMPLY(a, b) - if (a) then (b)
* EQUIV(a, b) - if (a) then (b) *AND* if (b) then (a)

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Brian Behlendorf 2015-06-24 14:44:47 -07:00
parent 2345368646
commit 5acb2307b2
1 changed files with 10 additions and 0 deletions
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10
include/sys/debug.h
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@ -92,6 +92,8 @@ void spl_dumpstack(void);
#define ASSERT3U(x,y,z) ((void)0)
#define ASSERT3P(x,y,z) ((void)0)
#define ASSERT0(x) ((void)0)
#define IMPLY(A, B) ((void)0)
#define EQUIV(A, B) ((void)0)
/*
* Debugging enabled (--enable-debug)
@ -105,6 +107,14 @@ void spl_dumpstack(void);
#define ASSERT3U(x,y,z) VERIFY3U(x, y, z)
#define ASSERT3P(x,y,z) VERIFY3P(x, y, z)
#define ASSERT0(x) VERIFY0(x)
#define IMPLY(A, B) \
((void)(((!(A)) || (B)) || \
spl_panic(__FILE__, __FUNCTION__, __LINE__, \
"(" #A ") implies (" #B ")")))
#define EQUIV(A, B) \
((void)((!!(A) == !!(B)) || \
spl_panic(__FILE__, __FUNCTION__, __LINE__, \
"(" #A ") is equivalent to (" #B ")")))
#endif /* NDEBUG */