kopia lustrzana https://github.com/Dsplib/libdspl-2.0
176 wiersze
4.7 KiB
C
176 wiersze
4.7 KiB
C
/*
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* Copyright (c) 2015-2024 Sergey Bakhurin
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* Digital Signal Processing Library [http://dsplib.org]
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*
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* This file is part of DSPL.
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*
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* is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* DSPL is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Foobar. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "dspl.h"
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#ifdef DOXYGEN_ENGLISH
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/*! ****************************************************************************
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\ingroup IN_OUT_GROUP
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\brief Save real data \f$y(x)\f$ to the text file `fn`. \n
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File format is:
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\verbatim
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x[0] y[0]
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x[1] y[1]
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... ...
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x[n-1] y[n-1]
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\endverbatim
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Text file can be used to plotting data with a third-party program
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for example, the GNUPLOT package (see \ref PLOT_GROUP). \n
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\param[in] x
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Pointer to the vector `x`. \n
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Vector size is `[n x 1]`. \n \n
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\param[in] y
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Pointer to the vector `y`. \n
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Vector size is `[n x 1]`. \n
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This pointer can be `NULL`.
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File will have only one column corresponds to `x` vector in this case. \n \n
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\param[in] n
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Size of vectors `x` and `y`. \n \n
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\param[in] fn
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File name. \n \n
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\return
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`RES_OK` if file is saved successfully. \n
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Else \ref ERROR_CODE_GROUP "code error".
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\note
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This function rounds data when writing to a file.
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So, it is not recommended to use it to verify algorithms.
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\author Sergey Bakhurin www.dsplib.org
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***************************************************************************** */
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#endif
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#ifdef DOXYGEN_RUSSIAN
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/*! ****************************************************************************
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\ingroup IN_OUT_GROUP
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\brief Сохранить вещественные данные в текстовый файл
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Функция сохраняет вещественные данные в текстовый файл `fn`. \n
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Файл имеет следующий формат: \n
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\verbatim
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x[0] y[0]
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x[1] y[1]
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... ...
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x[n-1] y[n-1]
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\endverbatim
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Файл может быть использован для построения графика сторонней программой,
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например пакетом GNUPLOT (см. раздел \ref PLOT_GROUP). \n
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\param[in] x
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Указатель на первый вектор. \n
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Размер вектора `[n x 1]`. \n \n
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\param[in] y
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Указатель на второй вектор. \n
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Размер вектора `[n x 1]`. \n
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Может быть `NULL`. \n
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Файл будет содержать только один столбец соответствующий
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вектору `x` если `y == NULL`. \n \n
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\param[in] n
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Размер входных векторов. \n \n
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\param[in] fn
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Имя файла. \n \n
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\return
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`RES_OK` --- файл сохранен успешно. \n
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В противном случае \ref ERROR_CODE_GROUP "код ошибки": \n
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\note
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Данная функция производит округление данных при записи в файл.
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Поэтому не рекомендуется использовать ее для верификации данных DSPL.
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\author Бахурин Сергей www.dsplib.org
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***************************************************************************** */
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#endif
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int DSPL_API writetxt(double* x, double* y, int n, char* fn)
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{
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int k, err;
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FILE* pFile = NULL;
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if(!x)
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return ERROR_PTR;
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if(n < 1)
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return ERROR_SIZE;
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if(!fn)
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return ERROR_FNAME;
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pFile = fopen(fn, "w+");
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if(pFile == NULL)
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return ERROR_FOPEN;
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if(y)
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{
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for(k = 0; k < n; k++)
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{
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if(isnan(x[k]) || isnan(y[k]))
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{
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err = ERROR_NAN;
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goto exit_label;
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}
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if(isinf(x[k]) || isinf(y[k]))
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{
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err = ERROR_INF;
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goto exit_label;
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}
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fprintf(pFile, "%+.12E\t%+.12E\n", x[k], y[k]);
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}
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}
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else
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{
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for(k = 0; k < n; k++)
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{
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if(isnan(x[k]))
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{
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err = ERROR_NAN;
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goto exit_label;
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}
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if(isinf(x[k]))
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{
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err = ERROR_INF;
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goto exit_label;
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}
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fprintf(pFile, "%+.12E\n", x[k]);
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}
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}
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err = RES_OK;
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exit_label:
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fclose(pFile);
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return err;
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}
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