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1.8.1.1
gecode
support
int-type.hpp
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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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/*
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* Main authors:
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* Christian Schulte <schulte@gecode.org>
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*
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* Copyright:
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* Christian Schulte, 2008
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*
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* Last modified:
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* $Date: 2010-01-26 23:22:47 +1100 (Tue, 26 Jan 2010) $ by $Author: schulte $
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* $Revision: 10238 $
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*
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* This file is part of Gecode, the generic constraint
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* development environment:
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* http://www.gecode.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#include <climits>
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namespace
Gecode {
namespace
Support {
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enum
IntType
{
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IT_CHAR
= 0,
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IT_SHRT
= 1,
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IT_INT
= 2
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};
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IntType
u_type
(
unsigned
int
n);
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IntType
s_type
(
signed
int
n);
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template
<
class
IntType>
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class
IntTypeTraits
{};
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template
<>
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class
IntTypeTraits
<signed char> {
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public
:
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typedef
unsigned
char
utype
;
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typedef
signed
char
stype
;
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static
const
signed
char
min
= SCHAR_MIN;
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static
const
signed
char
max
= SCHAR_MAX;
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static
const
IntType
description =
IT_CHAR
;
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};
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template
<>
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class
IntTypeTraits
<unsigned char> {
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public
:
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typedef
unsigned
char
utype
;
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typedef
signed
char
stype
;
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static
const
unsigned
char
min
= 0;
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static
const
unsigned
char
max
= UCHAR_MAX;
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static
const
IntType
description =
IT_CHAR
;
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};
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template
<>
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class
IntTypeTraits
<signed short int> {
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public
:
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typedef
unsigned
short
int
utype
;
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typedef
signed
short
int
stype
;
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static
const
signed
short
int
min
= SHRT_MIN;
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static
const
signed
short
int
max
= SHRT_MAX;
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static
const
IntType
description =
IT_SHRT
;
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};
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template
<>
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class
IntTypeTraits
<unsigned short int> {
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public
:
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typedef
unsigned
short
int
utype
;
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typedef
signed
short
int
stype
;
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static
const
unsigned
short
int
min
= 0;
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static
const
unsigned
short
int
max
= USHRT_MAX;
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static
const
IntType
description =
IT_SHRT
;
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};
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template
<>
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class
IntTypeTraits
<signed int> {
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public
:
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typedef
unsigned
int
utype
;
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typedef
signed
int
stype
;
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static
const
signed
int
min
= INT_MIN;
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static
const
signed
int
max
= INT_MAX;
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static
const
IntType
description =
IT_INT
;
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};
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template
<>
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class
IntTypeTraits
<unsigned int> {
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public
:
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typedef
unsigned
int
utype
;
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typedef
signed
int
stype
;
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static
const
unsigned
int
min
= 0;
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static
const
unsigned
int
max
= UINT_MAX;
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static
const
IntType
description =
IT_INT
;
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};
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forceinline
IntType
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u_type
(
unsigned
int
n) {
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if
(n < UCHAR_MAX)
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return
IT_CHAR
;
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else
if
(n < USHRT_MAX)
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return
IT_SHRT
;
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else
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return
IT_INT
;
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}
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forceinline
IntType
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s_type
(
int
n) {
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if
((n > SCHAR_MIN) && (n < SCHAR_MAX))
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return
IT_CHAR
;
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else
if
((n > SHRT_MIN) && (n < SHRT_MAX))
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return
IT_SHRT
;
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else
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return
IT_INT
;
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}
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}}
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// STATISTICS: support-any