/usr/include/ITK-4.5/itkVariableLengthVector.hxx is in libinsighttoolkit4-dev 4.5.0-3.
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 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 | /*=========================================================================
*
* 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 __itkVariableLengthVector_hxx
#define __itkVariableLengthVector_hxx
#include "itkNumericTraitsVariableLengthVectorPixel.h"
#include "vnl/vnl_math.h"
#include <cstring>
#include <cstdlib>
namespace itk
{
/** Default constructor */
template< typename TValueType >
VariableLengthVector< TValueType >
::VariableLengthVector():m_LetArrayManageMemory(true),
m_Data(0),
m_NumElements(0)
{}
/** Constructor with size */
template< typename TValueType >
VariableLengthVector< TValueType >
::VariableLengthVector(unsigned int length):
m_LetArrayManageMemory(true),
m_Data(0)
{
Reserve(length);
}
/** Constructor with user specified data */
template< typename TValueType >
VariableLengthVector< TValueType >
::VariableLengthVector(ValueType *datain, unsigned int sz, bool LetArrayManageMemory):
m_LetArrayManageMemory(LetArrayManageMemory),
m_Data(datain),
m_NumElements(sz)
{}
/** Constructor with user specified data */
template< typename TValueType >
VariableLengthVector< TValueType >
::VariableLengthVector(const ValueType *datain, unsigned int sz, bool LetArrayManageMemory):
m_LetArrayManageMemory(LetArrayManageMemory)
{
m_Data = const_cast< ValueType * >( datain );
m_NumElements = sz;
}
/** Copy constructer.. Override the default non-templated copy constructor
* that the compiler provides */
template< typename TValueType >
VariableLengthVector< TValueType >
::VariableLengthVector(const VariableLengthVector< TValueType > & v)
{
m_NumElements = v.Size();
m_Data = this->AllocateElements(m_NumElements);
m_LetArrayManageMemory = true;
for ( ElementIdentifier i = 0; i < v.Size(); i++ )
{
this->m_Data[i] = v[i];
}
}
/** Destructor */
template< typename TValueType >
VariableLengthVector< TValueType >
::~VariableLengthVector()
{
// if data exists and we are responsible for its memory, get rid of it..
if ( m_LetArrayManageMemory )
{
delete[] m_Data;
}
}
/** Reserve memory of certain size for m_Data */
template< typename TValueType >
void VariableLengthVector< TValueType >
::Reserve(ElementIdentifier size)
{
if ( m_Data )
{
if ( size > m_NumElements )
{
TValueType *temp = this->AllocateElements(size);
// only copy the portion of the data used in the old buffer
std::copy(m_Data,
m_Data+m_NumElements,
temp);
if ( m_LetArrayManageMemory )
{
delete[] m_Data;
}
m_Data = temp;
m_LetArrayManageMemory = true;
m_NumElements = size;
}
}
else
{
m_Data = this->AllocateElements(size);
m_NumElements = size;
m_LetArrayManageMemory = true;
}
}
/** Allocate memory of certain size and return it */
template< typename TValueType >
TValueType *VariableLengthVector< TValueType >
::AllocateElements(ElementIdentifier size) const
{
TValueType *data;
try
{
data = new TValueType[size];
}
catch ( ... )
{
data = 0;
}
if ( !data )
{
itkGenericExceptionMacro(<< "Failed to allocate memory of length " << size
<< " for VariableLengthVector.");
}
return data;
}
/** Set the pointer from which the data is imported.
* If "LetArrayManageMemory" is false, then the application retains
* the responsibility of freeing the memory for this data. If
* "LetArrayManageMemory" is true, then this class will free the
* memory when this object is destroyed. Note that you need to explicitly
* set the number of elements. */
template< typename TValueType >
void
VariableLengthVector< TValueType >
::SetData(TValueType *datain, bool LetArrayManageMemory)
{
// Free any existing data if we manage its memory
if ( m_LetArrayManageMemory )
{
delete[] m_Data;
}
m_LetArrayManageMemory = LetArrayManageMemory;
m_Data = datain;
}
/** Similar to the previous method. In the above method, the size must be
* separately set prior to using user-supplied data. This introduces an
* unnecessary allocation step to be performed. This method avoids it
* and should be used to import data wherever possible to avoid this.
* Set the pointer from which the data is imported.
* If "LetArrayManageMemory" is false, then the application retains
* the responsibility of freeing the memory for this data. If
* "LetArrayManageMemory" is true, then this class will free the
* memory when this object is destroyed. */
template< typename TValueType >
void
VariableLengthVector< TValueType >
::SetData(TValueType *datain, unsigned int sz, bool LetArrayManageMemory)
{
// Free any existing data if we manage its memory
if ( m_LetArrayManageMemory )
{
delete[] m_Data;
}
m_LetArrayManageMemory = LetArrayManageMemory;
m_Data = datain;
m_NumElements = sz;
}
template< typename TValueType >
void VariableLengthVector< TValueType >
::DestroyExistingData()
{
// Free any existing data if we manage its memory.
if ( !m_LetArrayManageMemory )
{
m_Data = 0;
m_NumElements = 0;
return;
}
if ( m_Data )
{
if ( m_NumElements > 0 )
{
delete[] m_Data;
m_Data = 0;
m_NumElements = 0;
}
}
}
template< typename TValueType >
void VariableLengthVector< TValueType >
::SetSize(unsigned int sz, bool destroyExistingData)
{
if ( destroyExistingData )
{
this->DestroyExistingData();
}
if ( !m_Data )
{
m_Data = this->AllocateElements(sz);
m_NumElements = sz;
m_LetArrayManageMemory = true;
return;
}
TValueType *temp = this->AllocateElements(sz);
if ( sz > m_NumElements )
{
// only copy the portion of the data used in the old buffer
std::copy(m_Data,
m_Data+m_NumElements,
temp);
}
else
{
// only copy elements 0...size-1
std::copy(m_Data,
m_Data+sz,
temp);
}
if ( m_LetArrayManageMemory )
{
delete[] m_Data;
}
m_Data = temp;
m_LetArrayManageMemory = true;
m_NumElements = sz;
}
/** Set the all the elements of the array to the specified value */
template< typename TValueType >
void VariableLengthVector< TValueType >
::Fill(TValueType const & v)
{
for ( ElementIdentifier i = 0; i < m_NumElements; i++ )
{
this->m_Data[i] = v;
}
}
/** Assignment operator */
template< typename TValueType >
const VariableLengthVector< TValueType > &
VariableLengthVector< TValueType >
::operator=(const Self & v)
{
if ( this != &v )
{
this->SetSize( v.Size() );
for ( ElementIdentifier i = 0; i < v.Size(); i++ )
{
this->m_Data[i] = v[i];
}
}
return *this;
}
/** Assignment operator */
template< typename TValueType >
const VariableLengthVector< TValueType > &
VariableLengthVector< TValueType >
::operator=(TValueType const & v)
{
this->Fill(v);
return *this;
}
template< typename TValueType >
VariableLengthVector< TValueType > &
VariableLengthVector< TValueType >
::operator-()
{
for ( ElementIdentifier i = 0; i < m_NumElements; i++ )
{
m_Data[i] = -m_Data[i];
}
return *this;
}
template< typename TValueType >
bool
VariableLengthVector< TValueType >
::operator==(const Self & v) const
{
if ( m_NumElements != v.Size() )
{
return false;
}
for ( ElementIdentifier i = 0; i < m_NumElements; i++ )
{
if ( m_Data[i] != v[i] )
{
return false;
}
}
return true;
}
template< typename TValueType >
bool
VariableLengthVector< TValueType >
::operator!=(const Self & v) const
{
if ( m_NumElements != v.Size() )
{
return true;
}
for ( ElementIdentifier i = 0; i < m_NumElements; i++ )
{
if ( m_Data[i] != v[i] )
{
return true;
}
}
return false;
}
/**
* Returns vector's Euclidean Norm
*/
template< typename TValueType >
typename VariableLengthVector< TValueType >::RealValueType
VariableLengthVector< TValueType >
::GetNorm(void) const
{
return (RealValueType)( vcl_sqrt( double( this->GetSquaredNorm() ) ) );
}
/**
* Returns vector's Squared Euclidean Norm
*/
template< typename TValueType >
typename VariableLengthVector< TValueType >::RealValueType
VariableLengthVector< TValueType >
::GetSquaredNorm(void) const
{
RealValueType sum = 0.0;
for ( unsigned int i = 0; i < this->m_NumElements; i++ )
{
const RealValueType value = ( *this )[i];
sum += value * value;
}
return sum;
}
} // namespace itk
#endif
|