135   PetscInt           i, j, k, n, nuniq, lo, hi, mid, *gindices, *buf, *tmp, tot;  in MatMult_Composite()  local
173     nuniq = 0; /* Number of unique nonzero columns */  in MatMult_Composite()
179       while (i < n && j < nuniq) {  in MatMult_Composite()
190         nuniq = k + n - i;  in MatMult_Composite()
191       } else if (j < nuniq) {  in MatMult_Composite()
192         PetscCall(PetscArraycpy(buf + k, gindices + j, nuniq - j));  in MatMult_Composite()
193         nuniq = k + nuniq - j;  in MatMult_Composite()
194       } else nuniq = k;  in MatMult_Composite()
211         hi = nuniq;  in MatMult_Composite()
224     PetscCall(ISCreateGeneral(PETSC_COMM_SELF, nuniq, gindices, PETSC_OWN_POINTER, &ix));  in MatMult_Composite()
225     PetscCall(ISCreateStride(PETSC_COMM_SELF, nuniq, 0, 1, &iy));  in MatMult_Composite()
227     PetscCall(VecCreateSeq(PETSC_COMM_SELF, nuniq, &shell->gvec));  in MatMult_Composite()