petsc-3.12.5 2020-03-29
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VecDotNorm2

computes the inner product of two vectors and the 2-norm squared of the second vector

Synopsis

#include "petscvec.h" 
PetscErrorCode  VecDotNorm2(Vec s,Vec t,PetscScalar *dp, PetscReal *nm)
Collective on Vec

Input Parameter

s - first vector
t - second vector

Output Parameter

dp - s'conj(t)
nm - t'conj(t)

Notes

conj(x) is the complex conjugate of x when x is complex

See Also

VecDot(), VecNorm(), VecDotBegin(), VecNormBegin(), VecDotEnd(), VecNormEnd()

Level

advanced

Location

src/vec/vec/utils/vinv.c

Implementations

VecDotNorm2_MPICUDA in src/vec/vec/impls/mpi/mpicuda/mpicuda.cu
VecDotNorm2_MPIViennaCL in src/vec/vec/impls/mpi/mpiviennacl/mpiviennacl.cxx
VecDotNorm2_Nest in src/vec/vec/impls/nest/vecnest.c
VecDotNorm2_SeqCUDA in src/vec/vec/impls/seq/seqcuda/veccuda2.cu
VecDotNorm2_SeqViennaCL in src/vec/vec/impls/seq/seqviennacl/vecviennacl.cxx

Index of all Vec routines
Table of Contents for all manual pages
Index of all manual pages