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/********************* */
/*! \file rounding_mode.h
** \verbatim
** Top contributors (to current version):
** Martin Brain, Tim King, Andres Noetzli
** Copyright (c) 2013 University of Oxford
** This file is part of the CVC4 project.
** Copyright (c) 2009-2018 by the authors listed in the file AUTHORS
** in the top-level source directory) and their institutional affiliations.
** All rights reserved. See the file COPYING in the top-level source
** directory for licensing information.\endverbatim
**
** \brief [[ Utility functions for working with floating point theories. ]]
**
** [[ This file contains the data structures used by the constant and
** parametric types of the floating point theory. ]]
**/
#include "cvc4_public.h"
#ifndef __CVC4__UTIL__ROUNDING_MODE_H
#define __CVC4__UTIL__ROUNDING_MODE_H
#include <fenv.h>
namespace CVC4 {
/**
* A concrete instance of the rounding mode sort
*/
enum CVC4_PUBLIC RoundingMode
{
roundNearestTiesToEven = FE_TONEAREST,
roundTowardPositive = FE_UPWARD,
roundTowardNegative = FE_DOWNWARD,
roundTowardZero = FE_TOWARDZERO,
// Initializes this to the diagonalization of the 4 other values.
roundNearestTiesToAway = (((~FE_TONEAREST) & 0x1) | ((~FE_UPWARD) & 0x2)
| ((~FE_DOWNWARD) & 0x4) | ((~FE_TOWARDZERO) & 0x8))
}; /* enum RoundingMode */
struct CVC4_PUBLIC RoundingModeHashFunction
{
inline size_t operator()(const RoundingMode& rm) const { return size_t(rm); }
}; /* struct RoundingModeHashFunction */
} // namespace CVC4
#endif /* __CVC4__UTIL__ROUNDING_MODE_H */
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