-/* Copyright (C) 1991 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1995 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
#include <math.h>
/* Return the inverse tangent of X. */
-__CONSTVALUE double
+double
DEFUN(atan, (x), register double x)
{
return atan2(x, 1.0);