Index: uspace/lib/c/include/math.h
===================================================================
--- uspace/lib/c/include/math.h	(revision 8620b2f4bee911da50b9a6a31d291747857234b0)
+++ uspace/lib/c/include/math.h	(revision 24e58cc0ff53327f65d95ecaa6c8b745606ba2f0)
@@ -48,13 +48,28 @@
 extern double fabs(double);
 extern double floor(double);
+extern double ceil(double);
 extern double modf(double, double *);
 extern double fmod(double, double);
 extern double pow(double, double);
 extern double exp(double);
+extern double expm1(double);
 extern double sqrt(double);
 extern double log(double);
+extern double log10(double);
 extern double sin(double);
+extern double sinh(double);
+extern double asin(double);
+extern double asinh(double);
 extern double cos(double);
+extern double cosh(double);
+extern double acos(double);
+extern double acosh(double);
+extern double tan(double);
+extern double tanh(double);
+extern double atan(double);
+extern double atanh(double);
 extern double atan2(double, double);
+
+double copysign(double, double);
 
 #endif