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/* @(#) assert.h 2.1 87/12/25 12:21:32 */
/*
The contents of this file are hereby released to the public domain.
-- Rahul Dhesi 1991/07/04
Defines a macro assert() that causes an assertion error if the assertion
fails.
Conditional compilation:
If NDEBUG is defined then
assert() is defined as null so all assertions vanish
else
if __FILE__ and __LINE__ are defined then
assertions print message including filename and line number
else
assertions print a message but not the filename and line number
endif
endif
*/
#ifdef NDEBUG
# define assert(E)
#else
#undef LINE_FILE
#ifdef __LINE__
# ifdef __FILE__
# define LINE_FILE
# endif
#endif
#ifdef LINE_FILE
# undef LINE_FILE
# define assert(E) \
{ if (!(E)) \
prterror ('w',"Assertion error in %s:%d.\n", __FILE__, __LINE__); \
}
#else
# define assert(E) \
{ if (!(E)) \
prterror ('w', "Assertion error.\n"); \
}
#endif
#endif /* NDEBUG */
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