diff --git a/sys/arm/include/ieeefp.h b/sys/arm/include/ieeefp.h
--- a/sys/arm/include/ieeefp.h
+++ b/sys/arm/include/ieeefp.h
@@ -49,4 +49,14 @@
 
 #define fp_except_t	int
 
+/* Augment the userland declarations. */
+__BEGIN_DECLS
+extern fp_rnd_t    fpgetround(void);
+extern fp_rnd_t    fpsetround(fp_rnd_t);
+extern fp_except_t fpgetmask(void);
+extern fp_except_t fpsetmask(fp_except_t);
+extern fp_except_t fpgetsticky(void);
+extern fp_except_t fpsetsticky(fp_except_t);
+__END_DECLS
+
 #endif /* _MACHINE_IEEEFP_H_ */