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If you detect an error in your function, you can bail out of it. For normal
errors, such as wrong types of arguments, you can fail to compute the function
by adding the statement
bailout. If something went
really wrong and you want to completely kill the current computation, you can
For example if you want to check for arguments in your function. You could use the following code.
function f(M) = ( if not IsMatrix (M) then ( error ("M not a matrix!"); bailout ); ... )