bug fix in FastAssign, and bug found in SwapEdges (not yet fixed)

Author: DrTimothyAldenDavis

experimental/algorithm/LAGr_SwapEdges.c

@@ -769,6 +769,7 @@ int LAGr_SwapEdges
         con->format = GxB_BITMAP;
         dup_swaps_v = NULL;
         GRB_TRY (GxB_load_Vector_from_Container(M, con, NULL)) ;
+GRB_TRY (GxB_print (M, 1)) ; // FIXME: added for debugging
         GRB_TRY (GrB_free(&con)) ;
         GRB_TRY (LAGraph_FastAssign_Semiring(
             E_vec, NULL, second_edge, edge_perm, M, ramp_v, 

experimental/algorithm/LAGraph_RichClubCoefficient.c

@@ -298,7 +298,7 @@ int LAGraph_RichClubCoefficient
 
         LG_ASSERT (max_deg == vpd_n && max_deg == epd_n, GrB_INVALID_VALUE) ;
         //run a cummulative sum (backwards) on vpd_arr
-        for(GrB_Index i = max_deg - 1; i > 0; --i)
+        for(int64_t i = max_deg - 1; i > 0; --i)
         {
             vpd_arr[i-1] += vpd_arr[i] ;
             epd_arr[i-1] += epd_arr[i] ;
@@ -358,7 +358,7 @@ int LAGraph_RichClubCoefficient
             vpd_index, vpd_arr, &max_deg, verts_per_deg
         )) ;
         //run a cummulative sum (backwards) on vpd_arr
-        for(GrB_Index i = max_deg - 1; i > 0; --i)
+        for(int64_t i = max_deg - 1; i > 0; --i)
         {
             vpd_arr[i-1] += vpd_arr[i] ;
             epd_arr[i-1] += epd_arr[i] ;

experimental/utility/LAGraph_FastAssign.c

@@ -162,7 +162,7 @@ int LAGraph_FastAssign_Semiring
     int ramp_h = GrB_DEFAULT, trsp = GrB_DEFAULT, i_h = GrB_DEFAULT;
     uint64_t ramp_n = 0, ramp_size = 0, i_n = 0, i_size= 0;
     GrB_Type x_type = NULL, i_type = NULL, ramp_type = NULL;
-    bool iso = false;
+    int32_t iso = false;
     //----------------------------------------------------------------------
     // Check inputs
     //----------------------------------------------------------------------
@@ -191,7 +191,7 @@ int LAGraph_FastAssign_Semiring
         GRB_TRY (GrB_Vector_size(&nrows, c)) ;
     }
 
-    GRB_TRY (GrB_Vector_get_INT32(X_vec, (int32_t *) &iso, GxB_ISO)) ;
+    GRB_TRY (GrB_Vector_get_INT32(X_vec, &iso, GxB_ISO)) ;
 
     GRB_TRY (GxB_Vector_type(&x_type, X_vec));