1 //------------------------------------------------------------------------------
2 // GrB_Vector_assign: w<M>(Rows) = accum (w(Rows),u)
3 //------------------------------------------------------------------------------
4
5 // SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2021, All Rights Reserved.
6 // SPDX-License-Identifier: Apache-2.0
7
8 //------------------------------------------------------------------------------
9
10 // Compare with GxB_Vector_subassign, which uses M and C_replace differently
11
12 #include "GB_assign.h"
13 #include "GB_bitmap_assign.h"
14
GrB_Vector_assign(GrB_Vector w,const GrB_Vector M,const GrB_BinaryOp accum,const GrB_Vector u,const GrB_Index * Rows,GrB_Index nRows,const GrB_Descriptor desc)15 GrB_Info GrB_Vector_assign // w<M>(Rows) = accum (w(Rows),u)
16 (
17 GrB_Vector w, // input/output matrix for results
18 const GrB_Vector M, // optional mask for w, unused if NULL
19 const GrB_BinaryOp accum, // optional accum for z=accum(w(Rows),t)
20 const GrB_Vector u, // first input: vector u
21 const GrB_Index *Rows, // row indices
22 GrB_Index nRows, // number of row indices
23 const GrB_Descriptor desc // descriptor for w and M
24 )
25 {
26
27 //--------------------------------------------------------------------------
28 // check inputs
29 //--------------------------------------------------------------------------
30
31 GB_WHERE (w, "GrB_Vector_assign (w, M, accum, u, Rows, nRows, desc)") ;
32 GB_BURBLE_START ("GrB_assign") ;
33 GB_RETURN_IF_NULL_OR_FAULTY (w) ;
34 GB_RETURN_IF_FAULTY (M) ;
35 GB_RETURN_IF_NULL_OR_FAULTY (u) ;
36 ASSERT (GB_VECTOR_OK (w)) ;
37 ASSERT (M == NULL || GB_VECTOR_OK (M)) ;
38 ASSERT (GB_VECTOR_OK (u)) ;
39
40 // get the descriptor
41 GB_GET_DESCRIPTOR (info, desc, C_replace, Mask_comp, Mask_struct,
42 xx1, xx2, xx3, xx7) ;
43
44 //--------------------------------------------------------------------------
45 // w(Rows)<M> = accum (w(Rows), u) and variations
46 //--------------------------------------------------------------------------
47
48 info = GB_assign (
49 (GrB_Matrix) w, C_replace, // w vector and its descriptor
50 (GrB_Matrix) M, Mask_comp, Mask_struct, // mask and its descriptor
51 false, // do not transpose the mask
52 accum, // for accum (C(Rows,:),A)
53 (GrB_Matrix) u, false, // u as a matrix; never transposed
54 Rows, nRows, // row indices
55 GrB_ALL, 1, // all column indices
56 false, NULL, GB_ignore_code, // no scalar expansion
57 GB_ASSIGN,
58 Context) ;
59
60 GB_BURBLE_END ;
61 return (info) ;
62 }
63
64