diff options
Diffstat (limited to '2.3-1/thirdparty/includes/GSL/gsl/gsl_dht.h')
-rw-r--r-- | 2.3-1/thirdparty/includes/GSL/gsl/gsl_dht.h | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/2.3-1/thirdparty/includes/GSL/gsl/gsl_dht.h b/2.3-1/thirdparty/includes/GSL/gsl/gsl_dht.h new file mode 100644 index 00000000..bfc4b2ff --- /dev/null +++ b/2.3-1/thirdparty/includes/GSL/gsl/gsl_dht.h @@ -0,0 +1,87 @@ +/* dht/gsl_dht.h + * + * Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman + * + * 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. + */ + +/* Author: G. Jungman + */ +#ifndef __GSL_DHT_H__ +#define __GSL_DHT_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 + + +struct gsl_dht_struct { + size_t size; /* size of the sample arrays to be transformed */ + double nu; /* Bessel function order */ + double xmax; /* the upper limit to the x-sampling domain */ + double kmax; /* the upper limit to the k-sampling domain */ + double * j; /* array of computed J_nu zeros, j_{nu,s} = j[s] */ + double * Jjj; /* transform numerator, J_nu(j_i j_m / j_N) */ + double * J2; /* transform denominator, J_{nu+1}^2(j_m) */ +}; +typedef struct gsl_dht_struct gsl_dht; + + +/* Create a new transform object for a given size + * sampling array on the domain [0, xmax]. + */ +gsl_dht * gsl_dht_alloc(size_t size); +gsl_dht * gsl_dht_new(size_t size, double nu, double xmax); + +/* Recalculate a transform object for given values of nu, xmax. + * You cannot change the size of the object since the internal + * allocation is reused. + */ +int gsl_dht_init(gsl_dht * t, double nu, double xmax); + +/* The n'th computed x sample point for a given transform. + * 0 <= n <= size-1 + */ +double gsl_dht_x_sample(const gsl_dht * t, int n); + + +/* The n'th computed k sample point for a given transform. + * 0 <= n <= size-1 + */ +double gsl_dht_k_sample(const gsl_dht * t, int n); + + +/* Free a transform object. + */ +void gsl_dht_free(gsl_dht * t); + + +/* Perform a transform on a sampled array. + * f_in[0] ... f_in[size-1] and similarly for f_out[] + */ +int gsl_dht_apply(const gsl_dht * t, double * f_in, double * f_out); + + +__END_DECLS + +#endif /* __GSL_DHT_H__ */ |