feat: add label and destroy methods

This patch brings public methods for rust la-n-egg-rpq algorithm.

Signed-off-by: Rodion Suvorov <[email protected]>

Author: suvorovrain

experimental/algorithm/LAGraph_RPQMatrix.c

@@ -167,6 +167,35 @@ GrB_Info LAGraph_RPQMatrix_check(RPQMatrixPlan *plan, GrB_Index *dimension, char
 static GrB_Semiring sr ;
 static GrB_Monoid op ;
 
+GrB_Info LAGraph_RPQMatrix_label(GrB_Matrix *mat, GrB_Index x, GrB_Index i, GrB_Index j)
+{
+    OK(GrB_Matrix_new(mat, GrB_BOOL, i, j)) ;
+    OK(GrB_Matrix_setElement(*mat, true, x, x)) ;
+    return (GrB_SUCCESS) ;
+}
+GrB_Info LAGraph_DestroyRpqMatrixPlan(RPQMatrixPlan *plan)
+{
+    if (plan == NULL)
+    {
+        return GrB_SUCCESS
+    }
+    if (plan->mat != NULL)
+    {
+        OK(GrB_Matrix_free(plan->mat)) ;
+    }
+    if (plan->res_mat != NULL)
+    {
+        OK(GrB_Matrix_free(plan->res_mat)) ;
+    }
+    GrB_Info lstatus = LAGraph_DestroyRpqMatrixPlan(plan->lhs) ;
+    GrB_Info rstatus = LAGraph_DestroyRpqMatrixPlan(plan->rhs) ;
+    if (rstatus || lstatus)
+    {
+        return GrB_INVALID_VALUE ;
+    }
+    return GrB_SUCCESS ;
+} ;
+
 GrB_Info LAGraph_RPQMatrix_solver(RPQMatrixPlan *plan, char *msg) ;
 
 static GrB_Info LAGraph_RPQMatrixLor(RPQMatrixPlan *plan, char *msg)

include/LAGraphX.h

@@ -962,6 +962,18 @@ GrB_Info LAGraph_RPQMatrix(
     char *msg            // LAGraph output message
 ) ;
 
+LAGRAPHX_PUBLIC
+GrB_Info LAGraph_RPQMatrix_label
+(
+    GrB_Matrix *mat, 
+    GrB_Index x,
+    GrB_Index i, 
+    GrB_Index j
+) ;
+
+LAGRAPHX_PUBLIC
+GrB_Info LAGraph_DestroyRpqMatrixPlan(RPQMatrixPlan *plan) ;
+
 //****************************************************************************
 LAGRAPHX_PUBLIC
 int LAGraph_VertexCentrality_Triangle       // vertex triangle-centrality