* functions. */
/*
- * GiNaC Copyright (C) 1999-2007 Johannes Gutenberg University Mainz, Germany
+ * GiNaC Copyright (C) 1999-2009 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
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
-#include <vector>
-#include <stdexcept>
-
#include "inifcns.h"
#include "ex.h"
#include "constant.h"
#include "pseries.h"
#include "utils.h"
+#include <stdexcept>
+#include <vector>
+
namespace GiNaC {
//////////
if (x.info(info_flags::positive))
return _ex0;
- // atan(0, x), x real and negative -> -Pi
+ // atan(0, x), x real and negative -> Pi
if (x.info(info_flags::negative))
- return _ex_1*Pi;
+ return Pi;
}
if (x.is_zero()) {
}
// atan(float, float) -> float
- if (is_a<numeric>(y) && is_a<numeric>(x) && !y.info(info_flags::crational)
- && !x.info(info_flags::crational))
+ if (is_a<numeric>(y) && !y.info(info_flags::crational) &&
+ is_a<numeric>(x) && !x.info(info_flags::crational))
return atan(ex_to<numeric>(y), ex_to<numeric>(x));
// atan(real, real) -> atan(y/x) +/- Pi
if (y.info(info_flags::real) && x.info(info_flags::real)) {
if (x.info(info_flags::positive))
return atan(y/x);
- else if(y.info(info_flags::positive))
+ else if (y.info(info_flags::positive))
return atan(y/x)+Pi;
else
return atan(y/x)-Pi;