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<H1><A NAME="SECTION000100000000000000000"></A><A NAME="sec:errors"></A>
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<BR>
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Error Handling
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</H1>
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<P>
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The error handling in MLD2P4 is based on the PSBLAS (version 2) error
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handling. Error conditions are signaled via an integer argument
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<code>info</code>; whenever an error condition is detected, an error trace
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stack is built by the library up to the top-level, user-callable
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routine. This routine will then decide, according to the user
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preferences, whether the error should be handled by terminating the
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program or by returning the error condition to the user code, which
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will then take action, and whether
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an error message should be printed. These options may be set by using
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the PSBLAS error handling routines; for further details see the PSBLAS
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User's Guide [<A
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HREF="node27.html#PSBLASGUIDE">17</A>].
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