mark array parameters to get_local_12_norm as const

This makes it clearer that this function does not modify these arrays.

diff --git a/cmd/gvmap/country_graph_coloring.c b/cmd/gvmap/country_graph_coloring.c
index 7168c99135548d62314cce8608f92cb532a8e15f..38a49fb5932771d5c86d4d9ecfec8e858b7c3e7d 100644 (file)
--- a/cmd/gvmap/country_graph_coloring.c
+++ b/cmd/gvmap/country_graph_coloring.c
@@ -17,7 +17,8 @@
 #include <stdbool.h>
 #include <time.h>
 
-static void get_local_12_norm(int n, int i, int *ia, int *ja, int *p, real *norm){
+static void get_local_12_norm(int n, int i, const int *ia, const int *ja,
+    const int *p, real *norm){
   int j, nz = 0;
   norm[0] = n; norm[1] = 0;
   for (j = ia[i]; j < ia[i+1]; j++){