From 4a0a2bccb56546d7b0daf604d14956960f21d74c Mon Sep 17 00:00:00 2001
From: David Kastrup <dak@gnu.org>
Date: Wed, 4 May 2016 22:50:36 +0200
Subject: [PATCH] Issue 4847: Let intlog2 adapt to argument precision

Makes a few warnings disappear without compromising precision.
---
 lily/include/misc.hh | 21 ++++++++++++++++++++-
 lily/misc.cc         | 19 -------------------
 2 files changed, 20 insertions(+), 20 deletions(-)

diff --git a/lily/include/misc.hh b/lily/include/misc.hh
index 7226aceef8..174b2f4c01 100644
--- a/lily/include/misc.hh
+++ b/lily/include/misc.hh
@@ -27,7 +27,26 @@ using namespace std;
 #include "interval.hh"
 
 double log_2 (double x);
-int intlog2 (int d);
+
+/*
+  Return the 2-log, rounded down
+*/
+template <class T>
+int
+intlog2 (T d)
+{
+  if (d <= 0)
+    error ("intlog2 with negative argument: " + ::to_string (d));
+  int i = 0;
+  while ((d != 1))
+    {
+      d /= 2;
+      i++;
+    }
+
+  assert (! (d / 2));
+  return i;
+}
 
 inline int
 sign (int i)
diff --git a/lily/misc.cc b/lily/misc.cc
index b930fd521a..6cafa2b50b 100644
--- a/lily/misc.cc
+++ b/lily/misc.cc
@@ -22,25 +22,6 @@
 #include "offset.hh"
 #include "warn.hh"
 
-/*
-  Return the 2-log, rounded down
-*/
-int
-intlog2 (int d)
-{
-  if (d <= 0)
-    error ("intlog2 with negative argument: " + ::to_string (d));
-  int i = 0;
-  while ((d != 1))
-    {
-      d /= 2;
-      i++;
-    }
-
-  assert (! (d / 2));
-  return i;
-}
-
 double
 log_2 (double x)
 {
-- 
2.39.2