ASSERT(3X) ASSERT(3X)
NAME
assert - assertion checking
SYNOPSIS
#include <assert.h>
void assert(expression);
DESCRIPTION
Assert is a macro that indicates expression is expected to
be nonzero at this point in the program. It causes an
abort(3) with a diagnostic comment on the standard output
when expression is zero. Compiling with the cc(1) option
-DNDEBUG effectively makes the expression always nonzero.
DIAGNOSTICS
`Assertion failed: file f line n', where f is the source
file and n the source line number of the assert statement.