From 74f45ae2a723107adce1038a708d2958aca97487 Mon Sep 17 00:00:00 2001
From: Martin Braun <martin.braun@ettus.com>
Date: Mon, 22 Jan 2018 09:54:46 -0800
Subject: rfnoc: Factor out ceil_log2() into central location

- New file: uhdlib/utils/math.hpp
---
 host/lib/include/uhdlib/utils/math.hpp | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 host/lib/include/uhdlib/utils/math.hpp

(limited to 'host/lib/include/uhdlib')

diff --git a/host/lib/include/uhdlib/utils/math.hpp b/host/lib/include/uhdlib/utils/math.hpp
new file mode 100644
index 000000000..eeb420727
--- /dev/null
+++ b/host/lib/include/uhdlib/utils/math.hpp
@@ -0,0 +1,25 @@
+//
+// Copyright 2018 Ettus Research, a National Instruments Company
+//
+// SPDX-License-Identifier: GPL-3.0
+//
+
+// More math, but not meant for public API
+
+#ifndef INCLUDED_UHDLIB_UTILS_MATH_HPP
+#define INCLUDED_UHDLIB_UTILS_MATH_HPP
+
+#include <cmath>
+
+namespace uhd { namespace math {
+
+/*! log2(num), rounded up to the nearest integer.
+ */
+template <class T>
+T ceil_log2(T num){
+    return std::ceil(std::log(num)/std::log(T(2)));
+}
+
+}} /* namespace uhd::math */
+
+#endif /* INCLUDED_UHDLIB_UTILS_MATH_HPP */
-- 
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