Added missing is_negative() inline function.

diff --git a/ginac/numeric.h b/ginac/numeric.h
index d198eafb6745abb97450783323c0b8dd1c6ea541..f52ffc0bd73e090b8b7f28621bbed14074a86672 100644 (file)
--- a/ginac/numeric.h
+++ b/ginac/numeric.h
@@ -266,6 +266,9 @@ inline bool is_zero(const numeric &x)
 inline bool is_positive(const numeric &x)
 { return x.is_positive(); }
 
+inline bool is_negative(const numeric &x)
+{ return x.is_negative(); }
+
 inline bool is_integer(const numeric &x)
 { return x.is_integer(); }