diff options
Diffstat (limited to '2.3-1/thirdparty/includes/GSL/gsl/gsl_fft_complex_float.h')
-rw-r--r-- | 2.3-1/thirdparty/includes/GSL/gsl/gsl_fft_complex_float.h | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/2.3-1/thirdparty/includes/GSL/gsl/gsl_fft_complex_float.h b/2.3-1/thirdparty/includes/GSL/gsl/gsl_fft_complex_float.h new file mode 100644 index 00000000..d3ff395f --- /dev/null +++ b/2.3-1/thirdparty/includes/GSL/gsl/gsl_fft_complex_float.h @@ -0,0 +1,139 @@ +/* fft/gsl_fft_complex_float.h + * + * Copyright (C) 1996, 1997, 1998, 1999, 2000, 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_FFT_COMPLEX_FLOAT_H__ +#define __GSL_FFT_COMPLEX_FLOAT_H__ + +#include <stddef.h> + +#include <gsl/gsl_math.h> +#include <gsl/gsl_complex.h> +#include <gsl/gsl_fft.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 + +/* Power of 2 routines */ + + +int gsl_fft_complex_float_radix2_forward (gsl_complex_packed_array_float data, + const size_t stride, + const size_t n); + +int gsl_fft_complex_float_radix2_backward (gsl_complex_packed_array_float data, + const size_t stride, + const size_t n); + +int gsl_fft_complex_float_radix2_inverse (gsl_complex_packed_array_float data, + const size_t stride, + const size_t n); + +int gsl_fft_complex_float_radix2_transform (gsl_complex_packed_array_float data, + const size_t stride, + const size_t n, + const gsl_fft_direction sign); + +int gsl_fft_complex_float_radix2_dif_forward (gsl_complex_packed_array_float data, + const size_t stride, + const size_t n); + +int gsl_fft_complex_float_radix2_dif_backward (gsl_complex_packed_array_float data, + const size_t stride, + const size_t n); + +int gsl_fft_complex_float_radix2_dif_inverse (gsl_complex_packed_array_float data, + const size_t stride, + const size_t n); + +int gsl_fft_complex_float_radix2_dif_transform (gsl_complex_packed_array_float data, + const size_t stride, + const size_t n, + const gsl_fft_direction sign); + +/* Mixed Radix general-N routines */ + +typedef struct + { + size_t n; + size_t nf; + size_t factor[64]; + gsl_complex_float *twiddle[64]; + gsl_complex_float *trig; + } +gsl_fft_complex_wavetable_float; + +typedef struct +{ + size_t n; + float *scratch; +} +gsl_fft_complex_workspace_float; + + +gsl_fft_complex_wavetable_float *gsl_fft_complex_wavetable_float_alloc (size_t n); + +void gsl_fft_complex_wavetable_float_free (gsl_fft_complex_wavetable_float * wavetable); + +gsl_fft_complex_workspace_float *gsl_fft_complex_workspace_float_alloc (size_t n); + +void gsl_fft_complex_workspace_float_free (gsl_fft_complex_workspace_float * workspace); + + +int gsl_fft_complex_float_memcpy (gsl_fft_complex_wavetable_float * dest, + gsl_fft_complex_wavetable_float * src); + + +int gsl_fft_complex_float_forward (gsl_complex_packed_array_float data, + const size_t stride, + const size_t n, + const gsl_fft_complex_wavetable_float * wavetable, + gsl_fft_complex_workspace_float * work); + +int gsl_fft_complex_float_backward (gsl_complex_packed_array_float data, + const size_t stride, + const size_t n, + const gsl_fft_complex_wavetable_float * wavetable, + gsl_fft_complex_workspace_float * work); + +int gsl_fft_complex_float_inverse (gsl_complex_packed_array_float data, + const size_t stride, + const size_t n, + const gsl_fft_complex_wavetable_float * wavetable, + gsl_fft_complex_workspace_float * work); + +int gsl_fft_complex_float_transform (gsl_complex_packed_array_float data, + const size_t stride, const size_t n, + const gsl_fft_complex_wavetable_float * wavetable, + gsl_fft_complex_workspace_float * work, + const gsl_fft_direction sign); + +__END_DECLS + +#endif /* __GSL_FFT_COMPLEX_FLOAT_H__ */ + + |