diff -ur omptl.old/omptl_algorithm omptl/omptl_algorithm
--- omptl.old/omptl_algorithm	2012-04-22 16:29:41.000000000 +0200
+++ omptl/omptl_algorithm	2021-06-20 15:40:29.000000000 +0200
@@ -20,7 +20,7 @@
 #define OMPTL_ALGORITHM 1
 
 #include <algorithm>
-#include <omptl/omptl>
+#include "omptl"
 
 namespace omptl
 {
@@ -553,9 +553,9 @@
 } // namespace omptl
 
 #ifdef _OPENMP
-  #include <omptl/omptl_algorithm_par.h>
+  #include "omptl_algorithm_par.h"
 #else
-  #include <omptl/omptl_algorithm_ser.h>
+  #include "omptl_algorithm_ser.h"
 #endif
 
 #endif /* OMPTL_ALGORITHM */
diff -ur omptl.old/omptl_algorithm_par.h omptl/omptl_algorithm_par.h
--- omptl.old/omptl_algorithm_par.h	2012-04-22 16:29:41.000000000 +0200
+++ omptl/omptl_algorithm_par.h	2021-06-20 15:40:50.000000000 +0200
@@ -21,8 +21,8 @@
 #include <cmath>
 #include <cstdlib>
 
-#include <omptl/omptl_tools.h>
-#include <omptl/omptl_numeric>
+#include "omptl_tools.h"
+#include "omptl_numeric"
 
 #include <iterator>
 
@@ -1700,7 +1700,7 @@
 
 	std::vector<char> pivot_used(pivots.size(), false); // can't be bool due to parallel write
 
-	const unsigned max_depth = std::floor(std::tr1::log2(P));
+	const unsigned max_depth = unsigned(std::floor(std::log2(P)));
 	assert(1u << max_depth <= P);
 	for (unsigned i = 0; i < max_depth; ++i)
 	{
diff -ur omptl.old/omptl_numeric omptl/omptl_numeric
--- omptl.old/omptl_numeric	2012-04-22 16:29:41.000000000 +0200
+++ omptl/omptl_numeric	2021-06-20 15:40:29.000000000 +0200
@@ -19,7 +19,7 @@
 #define OMPTL_NUMERIC 1
 
 #include <numeric>
-#include <omptl/omptl>
+#include "omptl"
 
 namespace omptl
 {
@@ -73,11 +73,11 @@
 } // namespace omptl
 
 #ifdef _OPENMP
-  #include <omptl/omptl_numeric_par.h>
+  #include "omptl_numeric_par.h"
 #else
-  #include <omptl/omptl_numeric_ser.h>
+  #include "omptl_numeric_ser.h"
 #endif
 
-#include <omptl/omptl_numeric_extensions.h>
+#include "omptl_numeric_extensions.h"
 
 #endif /* OMPTL_NUMERIC */
diff -ur omptl.old/omptl_numeric_extensions.h omptl/omptl_numeric_extensions.h
--- omptl.old/omptl_numeric_extensions.h	2012-04-22 16:29:41.000000000 +0200
+++ omptl/omptl_numeric_extensions.h	2021-06-20 15:40:29.000000000 +0200
@@ -51,9 +51,9 @@
 } // namespace
 
 #ifdef _OPENMP
-  #include <omptl/omptl_numeric_extensions_par.h>
+  #include "omptl_numeric_extensions_par.h"
 #else
-  #include <omptl/omptl_numeric_extensions_ser.h>
+  #include "omptl_numeric_extensions_ser.h"
 #endif
 
 namespace omptl
diff -ur omptl.old/omptl_numeric_par.h omptl/omptl_numeric_par.h
--- omptl.old/omptl_numeric_par.h	2012-04-22 16:29:41.000000000 +0200
+++ omptl/omptl_numeric_par.h	2021-06-20 15:40:29.000000000 +0200
@@ -23,8 +23,8 @@
 #include <functional>
 #include <iterator>
 
-#include <omptl/omptl_algorithm>
-#include <omptl/omptl_tools.h>
+#include "omptl_algorithm"
+#include "omptl_tools.h"
 
 namespace omptl
 {
diff -ur omptl.old/omptl_tools.h omptl/omptl_tools.h
--- omptl.old/omptl_tools.h	2012-04-22 16:29:41.000000000 +0200
+++ omptl/omptl_tools.h	2021-06-20 15:40:42.000000000 +0200
@@ -25,7 +25,7 @@
 #include <climits>
 #include <iterator>
 
-#include <tr1/cmath>
+#include <cmath>
 
 namespace omptl
 {