/usr/include/ITK-4.9/itkIsNumber.h is in libinsighttoolkit4-dev 4.9.0-4ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59  | /*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef itkIsNumber_h
#define itkIsNumber_h
#include "itkMetaProgrammingLibrary.h"
#include "itkIntTypes.h"
namespace itk
{
/// \cond HIDE_META_PROGRAMMING
namespace mpl
{
/** Tells whether a type is a number.
 * \return \c TrueType for all kinds of numbers from \c short to `long long`,
 * and from \c float to `long double`.
 * \ingroup MetaProgrammingLibrary
 * \ingroup ITKCommon
 */
template <typename T>
struct IsNumber : FalseType {};
/// \cond SPECIALIZATION_IMPLEMENTATION
template <> struct IsNumber<unsigned char>          : TrueType {};
template <> struct IsNumber<signed   char>          : TrueType {};
template <> struct IsNumber<unsigned short int>     : TrueType {};
template <> struct IsNumber<signed   short int>     : TrueType {};
template <> struct IsNumber<signed   int>           : TrueType {};
template <> struct IsNumber<unsigned int>           : TrueType {};
template <> struct IsNumber<signed   long int>      : TrueType {};
template <> struct IsNumber<unsigned long int>      : TrueType {};
template <> struct IsNumber<signed   long long int> : TrueType {};
template <> struct IsNumber<unsigned long long int> : TrueType {};
template <> struct IsNumber<float>                  : TrueType {};
template <> struct IsNumber<double>                 : TrueType {};
template <> struct IsNumber<long double>            : TrueType {};
/// \endcond
} // itk::mpl namespace
/// \endcond
} // itk namespace
#endif // itkIsNumber_h
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