D.17.3 umf exceptions

If an exceptional condition arises from the use of this library, one of the following lists of character strings may be returned as the function result.

• <'memory overflow'> means the library function ran out of memory, most likely due to a matrix being too large.
• <'bad umf specification'> means an input parameter didn’t conform to the appropriate format described above (umf input parameters)
• <'umf error'> covers any unexpected behavior or abnormal status returned by any function from the C language API.

For the *_trp functions. A non-square matrix will cause the second exception above. For the *_col functions, a non-square matrix will cause the third exception or cause an empty result to be returned.

The exceptions noted at the beginning of this section (External Libraries) are also possible.

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