56 …rrorCode MatNullSpaceGetVecs(MatNullSpace sp, PetscBool *has_const, PetscInt *n, const Vec *vecs[])  in MatNullSpaceGetVecs()  argument
62   if (vecs) *vecs = sp->vecs;  in MatNullSpaceGetVecs()
196       for (i = 0; i < sp->n; i++) PetscCall(VecView(sp->vecs[i], viewer));  in MatNullSpaceView()
230 PetscErrorCode MatNullSpaceCreate(MPI_Comm comm, PetscBool has_cnst, PetscInt n, const Vec vecs[], …  in MatNullSpaceCreate()  argument
237   if (n) PetscAssertPointer(vecs, 4);  in MatNullSpaceCreate()
238   for (i = 0; i < n; i++) PetscValidHeaderSpecific(vecs[i], VEC_CLASSID, 4);  in MatNullSpaceCreate()
243       PetscCall(VecLockReadPush(vecs[i]));  in MatNullSpaceCreate()
250       PetscCall(VecNorm(vecs[i], NORM_2, &norm));  in MatNullSpaceCreate()
251 …eal(norm - 1) <= PETSC_SQRT_MACHINE_EPSILON, PetscObjectComm((PetscObject)vecs[i]), PETSC_ERR_ARG_…  in MatNullSpaceCreate()
256         PetscCall(VecSum(vecs[i], &sum));  in MatNullSpaceCreate()
257 …bsScalar(sum) <= PETSC_SQRT_MACHINE_EPSILON, PetscObjectComm((PetscObject)vecs[i]), PETSC_ERR_ARG_…  in MatNullSpaceCreate()
263       PetscCall(VecMDot(vecs[i], n - i - 1, vecs + i + 1, dots));  in MatNullSpaceCreate()
265 …alar(dots[j]) <= PETSC_SQRT_MACHINE_EPSILON, PetscObjectComm((PetscObject)vecs[i]), PETSC_ERR_ARG_…  in MatNullSpaceCreate()
278   sp->vecs     = NULL;  in MatNullSpaceCreate()
284     PetscCall(PetscMalloc1(n, &sp->vecs));  in MatNullSpaceCreate()
287       PetscCall(PetscObjectReference((PetscObject)vecs[i]));  in MatNullSpaceCreate()
288       sp->vecs[i] = vecs[i];  in MatNullSpaceCreate()
320   for (i = 0; i < (*sp)->n; i++) PetscCall(VecLockReadPop((*sp)->vecs[i]));  in MatNullSpaceDestroy()
322   PetscCall(VecDestroyVecs((*sp)->n, &(*sp)->vecs));  in MatNullSpaceDestroy()
361     PetscCall(VecMDot(vec, sp->n, sp->vecs, sp->alpha));  in MatNullSpaceRemove()
363     PetscCall(VecMAXPY(vec, sp->n, sp->alpha, sp->vecs));  in MatNullSpaceRemove()
403     PetscCall(VecDuplicate(sp->vecs[0], &l));  in MatNullSpaceTest()
426     PetscUseTypeMethod(mat, mult, sp->vecs[j], l);  in MatNullSpaceTest()