assert(3x)
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assert Subroutine
verify program assertion
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SYNTAX
#include <assert.h>
assert (expression)
int expression;
DESCRIPTION
This macro is useful for putting diagnostics into programs. When
it is executed, if expression is false (zero), assert prints
Assertion failed: expression, file xyz, line nnn
on the standard error output and aborts. In the error message,
xyz is the name of the source file and nnn is the source line
number of the assert statement.
Compiling with the preprocessor option -DNDEBUG (see cpp(1)) or
with the preprocessor control statement #define NDEBUG ahead of
the #include <assert.h> statement will stop assertions from being
compiled into the program.
SEE ALSO
abort(3C).
cpp(1) in the Programmer's Reference for the DG/UX System
DG/UX 4.00 Page 1
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