File: assert.tex

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\cdbalgorithm{assert}{}

Checks whether the indicated expression equals zero. If not, the
program will be terminated. This command is used e.g.~in the test
suite.
\begin{screen}{1,2}
1 - B B**(-1);
@collect_factors!(%);
@collect_terms!(%);
@assert(%);
Assert check passed.
\end{screen}
If the expression is not zero an error message will be produced, and
the program will be terminated.

\cdbseealgo{tree}