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39eefe19 1// -*- mode: C++ -*-
97e94238 2/* Copyright (C) 2007 Christian Holm Christensen <cholm@nbi.dk>
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public License
6 * as published by the Free Software Foundation; either version 2.1 of
8 *
9 * This library is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
17 * USA
18 */
19#ifndef ALIFMDFLOWUTIL_H
20#define ALIFMDFLOWUTIL_H
39eefe19 21#include <cmath>
22#ifndef M_PI
23# define M_PI 3.14159265358979323846264338327
24#endif
25
26/** @defgroup u_utils Utilities
85a60ebd 27 @brief Group of utility classes and functions
28 @ingroup FMD_flow
29 */
39eefe19 30//__________________________________________________________________
31/** Normalize the angle @a ang to the interval @f$[0,2\pi)@f$
32 @ingroup u_utils
33 @param ang Angle to normalize
34 @return the normalised angle */
35inline Double_t
36NormalizeAngle(Double_t ang)
37{
38 while (ang < 0) ang += 2 * M_PI;
39 while (ang >= 2*M_PI) ang -= 2 * M_PI;
40 return ang;
41}
42
43#endif
44//____________________________________________________________________
45//
46// EOF
47//
48