From d519913ca66da04832f609e629910201f622f7b8 Mon Sep 17 00:00:00 2001
From: Dmitri Naumov <dmitri.naumov@ufz.de>
Date: Fri, 16 Jan 2015 12:47:44 +0100
Subject: [PATCH] [IO] Add is_safely_convertable().
This checks for possible overflows for two
arbitrary types.
---
FileIO/MPI_IO/NodePartitionedMeshReader.cpp | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/FileIO/MPI_IO/NodePartitionedMeshReader.cpp b/FileIO/MPI_IO/NodePartitionedMeshReader.cpp
index 8bca8f1fcd4..f600fe580b1 100644
--- a/FileIO/MPI_IO/NodePartitionedMeshReader.cpp
+++ b/FileIO/MPI_IO/NodePartitionedMeshReader.cpp
@@ -28,6 +28,19 @@
#include "MeshLib/Elements/Tet.h"
#include "MeshLib/Elements/Tri.h"
+// Check if the value can by converted to given type without overflow.
+template <typename VALUE, typename TYPE>
+bool
+is_safely_convertable(VALUE const& value)
+{
+ bool const result = value <= std::numeric_limits<TYPE>::max();
+ if (!result) {
+ ERR("The value %d is too large for conversion.", value);
+ ERR("Maximum available size is %d.", std::numeric_limits<TYPE>::max());
+ }
+ return result;
+}
+
namespace FileIO
{
--
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