slepc-3.21.1 2024-04-26
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MatCreateVecsEmpty

Get vector(s) compatible with the matrix, i.e. with the same parallel layout, but without internal array.

Synopsis

#include "slepcsys.h" 
PetscErrorCode MatCreateVecsEmpty(Mat mat,Vec *right,Vec *left)
Collective

Input Parameter

mat  - the matrix

Output Parameters

right  - (optional) vector that the matrix can be multiplied against
left  - (optional) vector that the matrix vector product can be stored in

Note

This is similar to MatCreateVecs(), but the new vectors do not have an internal array, so the intended usage is with VecPlaceArray().

See Also

VecDuplicateEmpty()

Level

developer

Location

src/sys/mat/matutil.c

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