1 files changed, 17 insertions, 0 deletions
diff --git a/utils/maybe_update_bound.h b/utils/maybe_update_bound.h
new file mode 100755
index 00000000..d57215d0
--- /dev/null
+++ b/utils/maybe_update_bound.h
@@ -0,0 +1,17 @@
+#ifndef MAYBE_UPDATE_BOUND_H
+#define MAYBE_UPDATE_BOUND_H
+
+template <class To,class From>
+inline void maybe_increase_max(To &to,const From &from) {
+    if (to<from)
+        to=from;
+}
+
+template <class To,class From>
+inline void maybe_decrease_min(To &to,const From &from) {
+    if (from<to)
+        to=from;
+}
+
+
+#endif