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<div id="version" align=right><b>petsc-3.10.3 2018-12-18</b></div>
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<A NAME="VecDotNorm2"><H1>VecDotNorm2</H1></A>
computes the inner product of two vectors and the 2-norm squared of the second vector
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscvec.h"
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../Vec/VecDotNorm2.html#VecDotNorm2">VecDotNorm2</A>(<A HREF="../Vec/Vec.html#Vec">Vec</A> s,<A HREF="../Vec/Vec.html#Vec">Vec</A> t,<A HREF="../Sys/PetscScalar.html#PetscScalar">PetscScalar</A> *dp, <A HREF="../Sys/PetscReal.html#PetscReal">PetscReal</A> *nm)
</PRE>
Collective on <A HREF="../Vec/Vec.html#Vec">Vec</A>
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>s </B></TD><TD>- first vector
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>t </B></TD><TD>- second vector
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>dp </B></TD><TD>- s'conj(t)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>nm </B></TD><TD>- t'conj(t)
</TD></TR></TABLE>
<P>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
conj(x) is the complex conjugate of x when x is complex
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
<A HREF="../Vec/VecDot.html#VecDot">VecDot</A>(), <A HREF="../Vec/VecNorm.html#VecNorm">VecNorm</A>(), <A HREF="../Vec/VecDotBegin.html#VecDotBegin">VecDotBegin</A>(), <A HREF="../Vec/VecNormBegin.html#VecNormBegin">VecNormBegin</A>(), <A HREF="../Vec/VecDotEnd.html#VecDotEnd">VecDotEnd</A>(), <A HREF="../Vec/VecNormEnd.html#VecNormEnd">VecNormEnd</A>()
<BR>
<P>
<H3><FONT COLOR="#CC3333">Keywords</FONT></H3>
vector, sqrt, square root
<BR><P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>advanced<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/vec/vec/utils/vinv.c.html#VecDotNorm2">src/vec/vec/utils/vinv.c</A>
<P><H3><FONT COLOR="CC3333">Implementations</FONT></H3><A HREF="../../../src/vec/vec/impls/mpi/mpicuda/mpicuda.cu.html#VecDotNorm2_MPICUDA">VecDotNorm2_MPICUDA in src/vec/vec/impls/mpi/mpicuda/mpicuda.cu</A><BR>
<A HREF="../../../src/vec/vec/impls/mpi/mpiviennacl/mpiviennacl.cxx.html#VecDotNorm2_MPIViennaCL">VecDotNorm2_MPIViennaCL in src/vec/vec/impls/mpi/mpiviennacl/mpiviennacl.cxx</A><BR>
<A HREF="../../../src/vec/vec/impls/nest/vecnest.c.html#VecDotNorm2_Nest">VecDotNorm2_Nest in src/vec/vec/impls/nest/vecnest.c</A><BR>
<A HREF="../../../src/vec/vec/impls/seq/seqcuda/veccuda2.cu.html#VecDotNorm2_SeqCUDA">VecDotNorm2_SeqCUDA in src/vec/vec/impls/seq/seqcuda/veccuda2.cu</A><BR>
<A HREF="../../../src/vec/vec/impls/seq/seqviennacl/vecviennacl.cxx.html#VecDotNorm2_SeqViennaCL">VecDotNorm2_SeqViennaCL in src/vec/vec/impls/seq/seqviennacl/vecviennacl.cxx</A><BR>
<BR><A HREF="./index.html">Index of all Vec routines</A>
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