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/*##########################################################################
# Copyright (C) 2016 European Synchrotron Radiation Facility
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
# ############################################################################*/
#ifndef FITFUNCTIONS_H
#define FITFUNCTIONS_H
/* Helper functions */
int test_params(int len_params, int len_params_one_function, char* fun_name, char* param_names);
double myerfc(double x);
double myerf(double x);
int erfc_array(double* x, int len_x, double* y);
int erf_array(double* x, int len_x, double* y);
/* Background functions */
void snip1d(double *data, int size, int width);
//void snip1d_multiple(double *data, int n_channels, int snip_width, int n_spectra);
void snip2d(double *data, int nrows, int ncolumns, int width);
void snip3d(double *data, int nx, int ny, int nz, int width);
int strip(double* input, long len_input, double c, long niter, int deltai,
long* anchors, long len_anchors, double* output);
/* Smoothing functions */
int SavitskyGolay(double* input, long len_input, int npoints, double* output);
/* Fit functions */
int sum_gauss(double* x, int len_x, double* pgauss, int len_pgauss, double* y);
int sum_agauss(double* x, int len_x, double* pgauss, int len_pgauss, double* y);
int sum_fastagauss(double* x, int len_x, double* pgauss, int len_pgauss, double* y);
int sum_splitgauss(double* x, int len_x, double* pgauss, int len_pgauss, double* y);
int sum_apvoigt(double* x, int len_x, double* pvoigt, int len_pvoigt, double* y);
int sum_pvoigt(double* x, int len_x, double* pvoigt, int len_pvoigt, double* y);
int sum_splitpvoigt(double* x, int len_x, double* pvoigt, int len_pvoigt, double* y);
int sum_lorentz(double* x, int len_x, double* plorentz, int len_plorentz, double* y);
int sum_alorentz(double* x, int len_x, double* plorentz, int len_plorentz, double* y);
int sum_splitlorentz(double* x, int len_x, double* plorentz, int len_plorentz, double* y);
int sum_stepdown(double* x, int len_x, double* pdstep, int len_pdstep, double* y);
int sum_stepup(double* x, int len_x, double* pustep, int len_pustep, double* y);
int sum_slit(double* x, int len_x, double* pslit, int len_pslit, double* y);
int sum_ahypermet(double* x, int len_x, double* phypermet, int len_phypermet, double* y, int tail_flags);
int sum_fastahypermet(double* x, int len_x, double* phypermet, int len_phypermet, double* y, int tail_flags);
#endif /* #define FITFUNCTIONS_H */
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