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   <div id="version" align=right><b>petsc-3.14.5 2021-03-03</b></div>
   <div id="bugreport" align=right><a href="mailto:petsc-maint@mcs.anl.gov?subject=Typo or Error in Documentation &body=Please describe the typo or error in the documentation: petsc-3.14.5 v3.14.5 docs/manualpages/Sys/PetscComplex.html "><small>Report Typos and Errors</small></a></div>
<A NAME="PetscComplex"><H1>PetscComplex</H1></A>
PETSc type that represents a complex number with precision matching that of <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A>. 
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include &lt;petscsys.h&gt;
<A HREF="../Sys/PetscComplex.html#PetscComplex">PetscComplex</A> number = 1. + 2.*<A HREF="../Sys/PETSC_i.html#PETSC_i">PETSC_i</A>;
</PRE>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
For MPI calls that require datatypes, use <A HREF="../Sys/MPIU_COMPLEX.html#MPIU_COMPLEX">MPIU_COMPLEX</A> as the datatype for <A HREF="../Sys/PetscComplex.html#PetscComplex">PetscComplex</A> and MPIU_SUM etc for operations.
They will automatically work correctly regardless of the size of <A HREF="../Sys/PetscComplex.html#PetscComplex">PetscComplex</A>.
<P>
See <A HREF="../Sys/PetscScalar.html#PetscScalar">PetscScalar</A> for details on how to ./configure the size of <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A>
<P>
Complex numbers are automatically available if PETSc was able to find a working complex implementation
<P>

<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
 <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A>, <A HREF="../Sys/PetscScalar.html#PetscScalar">PetscScalar</A>, <A HREF="../Sys/PetscComplex.html#PetscComplex">PetscComplex</A>, <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A>, <A HREF="../Sys/MPIU_REAL.html#MPIU_REAL">MPIU_REAL</A>, <A HREF="../Sys/MPIU_SCALAR.html#MPIU_SCALAR">MPIU_SCALAR</A>, <A HREF="../Sys/MPIU_COMPLEX.html#MPIU_COMPLEX">MPIU_COMPLEX</A>, <A HREF="../Sys/MPIU_INT.html#MPIU_INT">MPIU_INT</A>, <A HREF="../Sys/PETSC_i.html#PETSC_i">PETSC_i</A>
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>beginner<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../include/petscsystypes.h.html#PetscComplex">include/petscsystypes.h</A>
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