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<div style=""> Hi, Petsc Team,<br>
<br>
I wonder if we can utilize a global variable when using PETSc, such as a declaration and definition in the main function:<br>
<br>
extern PetscScalar x, y, z;<br>
x = 1.0;<br>
<br>
This should be a regular usage in ANSI C and will help a lot when we have user-defined functions. If it can work, then it will easily replace those functions like DAGetInfo( ) and save running time. But I don't see any examples of using this in PETSc before.
And I've tried this but it doesn't work or cannot pass the compiling check.<br>
<br>
<br>
Thank you.<br>
<br>
<br>
Zhisong Li<br>
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