Rename C++ header files to .hpp

[lttng-tools.git] / src / common / string-utils / format.hpp

diff --git a/src/common/string-utils/format.hpp b/src/common/string-utils/format.hpp
new file mode 100644 (file)
index 0000000..2446523
--- /dev/null
+++ b/src/common/string-utils/format.hpp
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2019 Jérémie Galarneau <jeremie.galarneau@efficios.com>
+ *
+ * SPDX-License-Identifier: LGPL-2.1-only
+ *
+ */
+
+#ifndef _STRING_UTILS_FORMAT_H
+#define _STRING_UTILS_FORMAT_H
+
+/*
+ * Maximal length of `val` when formatted in decimal.
+ *
+ * Note that this is an upper bound that can exceed the length
+ * required to hold the largest textual value of `val`. Note that this length
+ * assumes that no grouping/locale-aware formatting is performed (i.e. using
+ * the `'` specifier in POSIX formatting functions).
+ */
+#define MAX_INT_DEC_LEN(val)       ((3 * sizeof(val)) + 2)
+
+#endif /* _STRING_UTILS_FORMAT_H */