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 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License, version 2.0,
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/* @file

   Interface for obtaining area of geometry. */

#ifndef SQL_GIS_AREA_H_INCLUDED
#define SQL_GIS_AREA_H_INCLUDED

#include "sql/dd/types/spatial_reference_system.h"  // dd::Spatial_reference_system
#include "sql/gis/geometries.h"                     // gis::Geometry

namespace gis {

/* Calculate the area of a geometry.

   The coordinate system of the geometry must match the coordinate system of
   the SRID. It is the caller's responsibility to guarantee this.

   @param[in] srs The spatial reference system.
   @param[in] g Input geometry.
   @param[in] func_name Function name used in error reporting.
   @param[out] result Result. Invalid if `result_null`.
   @param[out] result_null Whether result is `NULL` instead of `result`.

   @retval false Success.
   @retval true An error has occurred. The error has been reported with
   my_error(). */

bool area(const dd::Spatial_reference_system *srs, const Geometry *g,
          const char *func_name, double *result, bool *result_null) noexcept;

}  // namespace gis

#endif  // SQL_GIS_AREA_H_INCLUDED
