compileassert.h

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#ifndef CLIB_COMPILEASSERT_H
#define CLIB_COMPILEASSERT_H

extern char xxxyyyzzz[1];
#if _lint
#define asserteql( a, b ) extern char xxxyyyzzz[1]
#define assertofs( type, var, pos ) extern char xxxyyyzzz[1]
#else
#define asserteql( a, b ) extern char xxxyyyzzz[(unsigned)1 - (unsigned)( a ^ ( b ) )]
#define assertofs( type, var, pos ) asserteql( offsetof( type, var ), pos )
#endif
#define arsize( a ) ( sizeof a / sizeof a[0] )

#define assertsize( type, length ) \
  extern char size_##type[length]; \
  extern char size_##type[sizeof( type )]

#endif