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<div id="version" align=right><b>petsc-3.4.2 2013-07-02</b></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>
#define PETSC_DESIRE_COMPLEX
#include <petscsys.h>
PetscComplex number = 1. + 2.*PETSC_i;
</PRE>
<P>
<H3><FONT COLOR="#CC3333">Note</FONT></H3>
Complex numbers are automatically available if PETSc was configured --with-scalar-type=complex (in which case
<A HREF="../Sys/PetscComplex.html#PetscComplex">PetscComplex</A> will match <A HREF="../Sys/PetscScalar.html#PetscScalar">PetscScalar</A>), otherwise the macro PETSC_DESIRE_COMPLEX must be defined before including any
PETSc headers. If the compiler supports complex numbers, <A HREF="../Sys/PetscComplex.html#PetscComplex">PetscComplex</A> and associated variables and functions will be
defined and PETSC_HAVE_COMPLEX will be set.
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A>, <A HREF="../Sys/PetscComplex.html#PetscComplex">PetscComplex</A>, MPIU_COMPLEX, <A HREF="../Sys/PetscInt.html#PetscInt">PetscInt</A>, <A HREF="../Sys/PETSC_i.html#PETSC_i">PETSC_i</A>
<BR><P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>beginner
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../include/petscsys.h.html#PetscComplex">include/petscsys.h</A>
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