* of special functions or implement the interface to the bignum package. */
/*
- * GiNaC Copyright (C) 1999-2009 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2011 Johannes Gutenberg University Mainz, Germany
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
case info_flags::negative:
return is_negative();
case info_flags::nonnegative:
- return !is_negative();
+ return is_zero() || is_positive();
case info_flags::posint:
return is_pos_integer();
case info_flags::negint: