piconst.h

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/*
 * (C) Copyright 1996-2012 ECMWF.
 * 
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0. 
 * In applying this licence, ECMWF does not waive the privileges and immunities 
 * granted to it by virtue of its status as an intergovernmental organisation nor
 * does it submit to any jurisdiction.
 */
 
/// \file piconst.h
/// ECMWF July 2010
 
#ifndef eckit_sql_expression_piconst_H
#define eckit_sql_expression_piconst_H
 
#include <cmath>
 
namespace odc {
namespace sql {
namespace function {
 
namespace piconst {
 
  constexpr double  pi                = M_PI;
  constexpr double  half_pi           = M_PI_2;
  constexpr double  two_pi            = (2. * pi);
  constexpr double  four_pi           = (4. * pi);
  constexpr double  pi_over_180       = (pi/180.);
  constexpr double  recip_pi_over_180 = (180./pi);
 
}
}
}
}
 
#endif