from buildroot

--- ltp-full-20140422.orig/testcases/realtime/lib/libstats.c	2014-04-23 10:37:00.000000000 +0200
+++ ltp-full-20140422/testcases/realtime/lib/libstats.c	2014-06-27 10:55:59.401744516 +0200
@@ -46,6 +46,11 @@
 #include <libstats.h>
 #include <librttest.h>
 
+#ifdef __UCLIBC__
+/* 10^x = 10^(log e^x) = (e^x)^log10 = e^(x * log 10) */
+#define exp10(x) (exp((x) * log(10)))
+#endif /* __UCLIBC__ */
+
 int save_stats = 0;
 
 /* static helper functions */