kopia lustrzana https://github.com/Dsplib/libdspl-2.0
161 wiersze
4.9 KiB
C
161 wiersze
4.9 KiB
C
/*
|
||
* Copyright (c) 2015-2020 Sergey Bakhurin
|
||
* Digital Signal Processing Library [http://dsplib.org]
|
||
*
|
||
* This file is part of libdspl-2.0.
|
||
*
|
||
* is free software: you can redistribute it and/or modify
|
||
* it under the terms of the GNU Lesser General Public License as published by
|
||
* the Free Software Foundation, either version 3 of the License, or
|
||
* (at your option) any later version.
|
||
*
|
||
* DSPL 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 Lesser General Public License
|
||
* along with Foobar. If not, see <http://www.gnu.org/licenses/>.
|
||
*/
|
||
|
||
|
||
#include <stdio.h>
|
||
#include <stdlib.h>
|
||
#include <string.h>
|
||
#include "dspl.h"
|
||
|
||
|
||
#ifdef DOXYGEN_ENGLISH
|
||
/*! ****************************************************************************
|
||
\ingroup ARRAY_GROUP
|
||
\fn int concat(void* a, size_t na, void* b, size_t nb, void* c)
|
||
\brief
|
||
Concatenate arrays `a` and `b`
|
||
|
||
Let's arrays `a` and `b` are vectors: \n
|
||
`a = [a(0), a(1), ... a(na-1)]`, \n
|
||
`b = [b(0), b(1), ... b(nb-1)]`, \n
|
||
concatenation of these arrays will be array `c` size `na+nb`: \n
|
||
`c = [a(0), a(1), ... a(na-1), b(0), b(1), ... b(nb-1)]`.
|
||
|
||
|
||
\param[in] a
|
||
Pointer to the first array `a`. \n
|
||
Array `a` size is `na` bytes. \n
|
||
\n
|
||
|
||
\param[in] na
|
||
Array `a` size (bytes). \n
|
||
\n
|
||
|
||
\param[in] b
|
||
Pointer to the second array `b`. \n
|
||
Array `b` size is `nb` bytes. \n
|
||
\n
|
||
|
||
\param[in] nb
|
||
Array `a` size (bytes). \n
|
||
\n
|
||
|
||
\param[out] c
|
||
Pointer to the concatenation result array `c`. \n
|
||
Array `c` size is `na + nb` bytes. \n
|
||
Memory must be allocated. \n
|
||
\n
|
||
|
||
\return
|
||
`RES_OK` if function returns successfully. \n
|
||
Else \ref ERROR_CODE_GROUP "code error".
|
||
|
||
Function uses pointer type `void*` and can be useful for an arrays
|
||
concatenation with different types. \n
|
||
For example two `double` arrays concatenation:
|
||
\code{.cpp}
|
||
double a[3] = {1.0, 2.0, 3.0};
|
||
double b[2] = {4.0, 5.0};
|
||
double c[5];
|
||
|
||
concat((void*)a, 3*sizeof(double), (void*)b, 2*sizeof(double), (void*)c);
|
||
\endcode
|
||
Vector `c` keeps follow data:
|
||
\verbatim
|
||
c = [1.0, 2.0, 3.0, 4.0, 5.0]
|
||
\endverbatim
|
||
|
||
\author Sergey Bakhurin www.dsplib.org
|
||
***************************************************************************** */
|
||
#endif
|
||
|
||
#ifdef DOXYGEN_RUSSIAN
|
||
/*! ****************************************************************************
|
||
\ingroup ARRAY_GROUP
|
||
\fn int concat(void* a, size_t na, void* b, size_t nb, void* c)
|
||
\brief Конкатенация двух массивов данных
|
||
|
||
Функция производит конкатенацию двух массивов. Пусть массивы `a` и `b`
|
||
заданы как векторы: \n
|
||
`a = [a(0), a(1), ... a(na-1)]`, \n
|
||
`b = [b(0), b(1), ... b(nb-1)]`, \n
|
||
тогда результатом конкатенации будет вектор размера `na+nb` вида: \n
|
||
`c = [a(0), a(1), ... a(na-1), b(0), b(1), ... b(nb-1)]`.
|
||
|
||
|
||
\param[in] a
|
||
Указатель на первый вектор `a`. \n
|
||
Размер вектора `na` байт. \n \n
|
||
|
||
\param[in] na
|
||
Размер первого вектора `a` в байт. \n \n
|
||
|
||
\param[in] b
|
||
Указатель на второй вектор `b`. \n
|
||
Размер памяти вектора `nb` байт. \n \n
|
||
|
||
\param[in] nb
|
||
Размер второго вектора `b` в байт. \n \n
|
||
|
||
\param[out] c
|
||
Указатель на вектор конкатенации `c`. \n
|
||
Размер памяти вектора `na + nb` байт. \n
|
||
Память должна быть выделена. \n \n
|
||
|
||
\return
|
||
`RES_OK` если функция выполнена успешно. \n
|
||
В противном случае \ref ERROR_CODE_GROUP "код ошибки".
|
||
|
||
\note
|
||
Функция использует указатели типа `void*` и может быть использована для
|
||
конкатенации данных различного типа. \n
|
||
Например конкатенация массивов типа `double`:
|
||
\code{.cpp}
|
||
double a[3] = {1.0, 2.0, 3.0};
|
||
double b[2] = {4.0, 5.0};
|
||
double c[5];
|
||
concat((void*)a, 3*sizeof(double), (void*)b, 2*sizeof(double), (void*)c);
|
||
\endcode
|
||
в результате вектор `c` будет хранить массив данных:
|
||
\verbatim
|
||
c = [1.0, 2.0, 3.0, 4.0, 5.0]
|
||
\endverbatim
|
||
|
||
\author
|
||
Бахурин Сергей
|
||
www.dsplib.org
|
||
***************************************************************************** */
|
||
#endif
|
||
int DSPL_API concat(void* a, size_t na, void* b, size_t nb, void* c)
|
||
{
|
||
if(!a || !b || !c || c == b)
|
||
return ERROR_PTR;
|
||
if(na < 1 || nb < 1)
|
||
return ERROR_SIZE;
|
||
|
||
if(c != a)
|
||
memcpy(c, a, na);
|
||
|
||
memcpy((char*)c+na, b, nb);
|
||
return RES_OK;
|
||
}
|
||
|
||
|