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/* Result supporting functions implementation: inline functions.
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_inlines_hh
#define PPL_Result_inlines_hh 1
#include "assert.hh"
namespace Parma_Polyhedra_Library {
/*! \relates Parma_Polyhedra_Library::Result */
inline Result_Class
result_class(Result r) {
return static_cast<Result_Class>(r & VC_MASK);
}
/*! \relates Parma_Polyhedra_Library::Result */
inline Result_Relation
result_relation(Result r) {
return static_cast<Result_Relation>(r & VR_MASK);
}
/*! \relates Parma_Polyhedra_Library::Result */
inline Result
result_relation_class(Result r) {
return static_cast<Result>(r & (VR_MASK | VC_MASK));
}
inline int
result_overflow(Result r) {
switch (result_class(r)) {
case VC_NORMAL:
switch (r) {
case V_LT_INF:
return -1;
case V_GT_SUP:
return 1;
default:
break;
}
break;
case VC_MINUS_INFINITY:
return -1;
case VC_PLUS_INFINITY:
return 1;
default:
break;
}
return 0;
}
inline bool
result_representable(Result r) {
return !(r & V_UNREPRESENTABLE);
}
inline Result operator|(Result a, Result b) {
return static_cast<Result>((unsigned)a | (unsigned)b);
}
inline Result operator-(Result a, Result b) {
return static_cast<Result>((unsigned)a & ~(unsigned)b);
}
} // namespace Parma_Polyhedra_Library
#endif // !defined(PPL_Result_inlines_hh)
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