Index: uspace/lib/math/include/math.h
===================================================================
--- uspace/lib/math/include/math.h	(revision 992ffa61925d507ddd9ca906e90fb41d1ddbaacb)
+++ uspace/lib/math/include/math.h	(revision bfcde8d08830f25b13793d8932112e93ed8b129d)
@@ -1,4 +1,5 @@
 /*
  * Copyright (c) 2011 Petr Koupy
+ * Copyright (c) 2015 Jiri Svoboda
  * All rights reserved.
  *
@@ -38,7 +39,9 @@
 #include <libarch/math.h>
 
+#define M_LN10 2.30258509299404568402
 #define M_LN2 0.69314718055994530942
 #define M_LOG2E 1.4426950408889634074
 #define M_PI 3.14159265358979323846
+#define M_PI_2 1.57079632679489661923
 
 #endif