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<div id="version" align=right><b>slepc-3.23.1 2025-05-01</b></div>
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<H1>SlepcHasExternalPackage</H1>
Determine whether SLEPc has been configured with the given package.
<H3><FONT COLOR="#883300">Synopsis</FONT></H3>
<PRE>
#include "slepcsys.h"
<A HREF="https://petsc.org/release/manualpages/Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../sys/SlepcHasExternalPackage.html#SlepcHasExternalPackage">SlepcHasExternalPackage</A>(const char pkg[], <A HREF="https://petsc.org/release/manualpages/Sys/PetscBool.html#PetscBool">PetscBool</A> *has)
</PRE>
Not Collective
<P>
<H3><FONT COLOR="#883300">Input Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>pkg </B></TD><TD> - external package name
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Output Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>has </B></TD><TD> - <A HREF="https://petsc.org/release/manualpages/Sys/PETSC_TRUE.html#PETSC_TRUE">PETSC_TRUE</A> if SLEPc is configured with the given package, else <A HREF="https://petsc.org/release/manualpages/Sys/PETSC_FALSE.html#PETSC_FALSE">PETSC_FALSE</A>
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#883300">Notes</FONT></H3>
This is basically an alternative for SLEPC_HAVE_XXX whenever a preprocessor macro
is not available/desirable, e.g. in Python.
<P>
The external package name pkg is e.g. "arpack", "primme".
It should correspond to the name listed in ./configure --help
<P>
The lookup is case insensitive, i.e. looking for "ARPACK" or "arpack" is the same.
<P>
<H3><FONT COLOR="#883300">See Also</FONT></H3>
<A HREF="../EPS/EPSType.html#EPSType">EPSType</A>, <A HREF="../SVD/SVDType.html#SVDType">SVDType</A>
<BR><P><B></B><H3><FONT COLOR="#883300">Level</FONT></H3>intermediate<BR>
<H3><FONT COLOR="#883300">Location</FONT></H3>
</B><A HREF="../../../src/sys/slepcutil.c.html#SlepcHasExternalPackage">src/sys/slepcutil.c</A>
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