include/geos/util/math.h

   1 /**********************************************************************
   2  *
   3  * GEOS - Geometry Engine Open Source
   4  * http://geos.osgeo.org
   5  *
   6  * Copyright (C) 2001-2002 Vivid Solutions Inc.
   7  * Copyright (C) 2006 Refractions Research Inc.
   8  *
   9  * This is free software; you can redistribute and/or modify it under
  10  * the terms of the GNU Lesser General Public Licence as published
  11  * by the Free Software Foundation.
  12  * See the COPYING file for more information.
  13  *
  14  **********************************************************************/
  15
  16 #ifndef GEOS_UTIL_MATH_H
  17 #define GEOS_UTIL_MATH_H
  18
  19 namespace geos { namespace util {
  20
  21 /// Symmetric Rounding Algorithm
  22 double sym_round(double val);
  23
  24 /// Asymmetric Rounding Algorithm
  25 double java_math_round(double val);
  26
  27 /// Equivalent to Java Math.rint()
  28 double rint_vc(double val);
  29
  30 /// Default rounding method for GEOS
  31 ///
  32 /// @note Always use this rounding method, to easy easy switching
  33 /// between different rounding method for the whole codebase.
  34 inline double round(double val)
  35 {
  36         return java_math_round(val);
  37 }
  38
  39 }} // namespace geos::util
  40
  41 #endif // GEOS_UTIL_MATH_H