Imported Upstream version 0.11.2upstream/0.11.2upstream

1 files changed, 173 insertions, 0 deletions

diff --git a/src/Result.defs.hh b/src/Result.defs.hh
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+/* Result enum and supporting function declarations.
+   Copyright (C) 2001-2010 Roberto Bagnara <bagnara@cs.unipr.it>
+   Copyright (C) 2010-2011 BUGSENG srl (http://bugseng.com)
+
+This file is part of the Parma Polyhedra Library (PPL).
+
+The PPL is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version.
+
+The PPL is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software Foundation,
+Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307, USA.
+
+For the most up-to-date information see the Parma Polyhedra Library
+site: http://www.cs.unipr.it/ppl/ . */
+
+#ifndef PPL_Result_defs_hh
+#define PPL_Result_defs_hh 1
+
+namespace Parma_Polyhedra_Library {
+
+enum Result_Class {
+  //! \hideinitializer Representable number result class.
+  VC_NORMAL = 0 << 4,
+
+  //! \hideinitializer Negative infinity result class.
+  VC_MINUS_INFINITY = 1 << 4,
+
+  //! \hideinitializer Positive infinity result class.
+  VC_PLUS_INFINITY = 2 << 4,
+
+  //! \hideinitializer Not a number result class.
+  VC_NAN = 3 << 4,
+
+  VC_MASK = VC_NAN
+};
+
+// This must be kept in sync with Relation_Symbol
+enum Result_Relation {
+  //! \hideinitializer No values satisfies the relation.
+  VR_EMPTY = 0,
+
+  //! \hideinitializer Equal. This need to be accompanied by a value.
+  VR_EQ = 1,
+
+  //! \hideinitializer Less than. This need to be accompanied by a value.
+  VR_LT = 2,
+
+  //! \hideinitializer Greater than. This need to be accompanied by a value.
+  VR_GT = 4,
+
+  //! \hideinitializer Not equal. This need to be accompanied by a value.
+  VR_NE = VR_LT | VR_GT,
+
+  //! \hideinitializer Less or equal. This need to be accompanied by a value.
+  VR_LE = VR_EQ | VR_LT,
+
+  //! \hideinitializer Greater or equal. This need to be accompanied by a value.
+  VR_GE = VR_EQ | VR_GT,
+
+  //! \hideinitializer All values satisfy the relation.
+  VR_LGE = VR_LT | VR_EQ | VR_GT,
+
+  VR_MASK = VR_LGE
+};
+
+//! Possible outcomes of a checked arithmetic computation.
+/*! \ingroup PPL_CXX_interface */
+enum Result {
+  //! \hideinitializer The exact result is not comparable.
+  V_EMPTY = VR_EMPTY,
+
+  //! \hideinitializer The computed result is exact.
+  V_EQ = VR_EQ,
+
+  //! \hideinitializer The computed result is inexact and rounded up.
+  V_LT = VR_LT,
+
+  //! \hideinitializer The computed result is inexact and rounded down.
+  V_GT = VR_GT,
+
+  //! \hideinitializer The computed result is inexact.
+  V_NE = VR_NE,
+
+  //! \hideinitializer The computed result may be inexact and rounded up.
+  V_LE = VR_LE,
+
+  //! \hideinitializer The computed result may be inexact and rounded down.
+  V_GE = VR_GE,
+
+  //! \hideinitializer The computed result may be inexact.
+  V_LGE = VR_LGE,
+
+  //! \hideinitializer The exact result is a number out of finite bounds.
+  V_OVERFLOW = 1 << 6,
+
+  //! \hideinitializer A negative integer overflow occurred (rounding up).
+  V_LT_INF = V_LT | V_OVERFLOW,
+
+  //! \hideinitializer A positive integer overflow occurred (rounding down).
+  V_GT_SUP = V_GT | V_OVERFLOW,
+
+  //! \hideinitializer A positive integer overflow occurred (rounding up).
+  V_LT_PLUS_INFINITY = V_LT | VC_PLUS_INFINITY,
+
+  //! \hideinitializer A negative integer overflow occurred (rounding down).
+  V_GT_MINUS_INFINITY = V_GT | VC_MINUS_INFINITY,
+
+  //! \hideinitializer Negative infinity result.
+  V_EQ_MINUS_INFINITY = V_EQ | VC_MINUS_INFINITY,
+
+  //! \hideinitializer Positive infinity result.
+  V_EQ_PLUS_INFINITY = V_EQ | VC_PLUS_INFINITY,
+
+  //! \hideinitializer Not a number result.
+  V_NAN = VC_NAN,
+
+  //! \hideinitializer Converting from unknown string.
+  V_CVT_STR_UNK = V_NAN | (1 << 8),
+
+  //! \hideinitializer Dividing by zero.
+  V_DIV_ZERO = V_NAN | (2 << 8),
+
+  //! \hideinitializer Adding two infinities having opposite signs.
+  V_INF_ADD_INF = V_NAN | (3 << 8),
+
+  //! \hideinitializer Dividing two infinities.
+  V_INF_DIV_INF = V_NAN | (4 << 8),
+
+  //! \hideinitializer Taking the modulus of an infinity.
+  V_INF_MOD = V_NAN | (5 << 8),
+
+  //! \hideinitializer Multiplying an infinity by zero.
+  V_INF_MUL_ZERO = V_NAN | (6 << 8),
+
+  //! \hideinitializer Subtracting two infinities having the same sign.
+  V_INF_SUB_INF = V_NAN | (7 << 8),
+
+  //! \hideinitializer Computing a remainder modulo zero.
+  V_MOD_ZERO = V_NAN | (8 << 8),
+
+  //! \hideinitializer Taking the square root of a negative number.
+  V_SQRT_NEG = V_NAN | (9 << 8),
+
+  //! \hideinitializer Unknown result due to intermediate negative overflow.
+  V_UNKNOWN_NEG_OVERFLOW = V_NAN | (10 << 8),
+
+  //! \hideinitializer Unknown result due to intermediate positive overflow.
+  V_UNKNOWN_POS_OVERFLOW = V_NAN | (11 << 8),
+
+  //! \hideinitializer The computed result is not representable.
+  V_UNREPRESENTABLE = 1 << 7
+
+};
+
+//! Extracts the value class part of \p r (representable number, unrepresentable minus/plus infinity or nan).
+Result_Class result_class(Result r);
+
+//! Extracts the relation part of \p r.
+Result_Relation result_relation(Result r);
+
+} // namespace Parma_Polyhedra_Library
+
+#include "Result.inlines.hh"
+
+#endif // !defined(PPL_Result_defs_hh)