diff --git a/ChangeLog b/ChangeLog
index bd5292c..6d40705 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2008-01-11  Richard B. Kreckel  <kreckel@ginac.de>
+
+	* include/cln/float.h (cos_sin_t, cosh_sinh_t): Add default ctor.
+
 2008-01-11  Richard B. Kreckel  <kreckel@ginac.de>
 
 	Make some functions more memory efficient:
diff --git a/include/cln/float.h b/include/cln/float.h
index 2f0a58c..6bfd2bb 100644
--- a/include/cln/float.h
+++ b/include/cln/float.h
@@ -616,6 +616,7 @@ struct cos_sin_t {
 	cl_R cos;
 	cl_R sin;
 // Constructor:
+	cos_sin_t () {}
 	cos_sin_t (const cl_R& u, const cl_R& v) : cos (u), sin (v) {}
 };
 
@@ -659,6 +660,7 @@ struct cosh_sinh_t {
 	cl_R cosh;
 	cl_R sinh;
 // Constructor:
+	cosh_sinh_t () {}
 	cosh_sinh_t (const cl_R& u, const cl_R& v) : cosh (u), sinh (v) {}
 };