/usr/include/gsl/gsl_spline.h is in libgsl-dev 2.1+dfsg-2.
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 | /* interpolation/gsl_spline.h
*
* Copyright (C) 2001, 2007 Brian Gough
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* This program 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 General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __GSL_SPLINE_H__
#define __GSL_SPLINE_H__
#include <stdlib.h>
#include <gsl/gsl_interp.h>
#undef __BEGIN_DECLS
#undef __END_DECLS
#ifdef __cplusplus
# define __BEGIN_DECLS extern "C" {
# define __END_DECLS }
#else
# define __BEGIN_DECLS /* empty */
# define __END_DECLS /* empty */
#endif
__BEGIN_DECLS
/* general interpolation object */
typedef struct {
gsl_interp * interp;
double * x;
double * y;
size_t size;
} gsl_spline;
gsl_spline *
gsl_spline_alloc(const gsl_interp_type * T, size_t size);
int
gsl_spline_init(gsl_spline * spline, const double xa[], const double ya[], size_t size);
const char * gsl_spline_name(const gsl_spline * spline);
unsigned int gsl_spline_min_size(const gsl_spline * spline);
int
gsl_spline_eval_e(const gsl_spline * spline, double x,
gsl_interp_accel * a, double * y);
double
gsl_spline_eval(const gsl_spline * spline, double x, gsl_interp_accel * a);
int
gsl_spline_eval_deriv_e(const gsl_spline * spline,
double x,
gsl_interp_accel * a,
double * y);
double
gsl_spline_eval_deriv(const gsl_spline * spline,
double x,
gsl_interp_accel * a);
int
gsl_spline_eval_deriv2_e(const gsl_spline * spline,
double x,
gsl_interp_accel * a,
double * y);
double
gsl_spline_eval_deriv2(const gsl_spline * spline,
double x,
gsl_interp_accel * a);
int
gsl_spline_eval_integ_e(const gsl_spline * spline,
double a, double b,
gsl_interp_accel * acc,
double * y);
double
gsl_spline_eval_integ(const gsl_spline * spline,
double a, double b,
gsl_interp_accel * acc);
void
gsl_spline_free(gsl_spline * spline);
__END_DECLS
#endif /* __GSL_INTERP_H__ */
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