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author | Jukka Ojanen <jukka.ojanen@linkotec.net> | 2015-07-14 17:08:14 +0300 |
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committer | Jukka Ojanen <jukka.ojanen@linkotec.net> | 2015-07-14 17:08:14 +0300 |
commit | 9885d87c6335d5b688bdf6b90e78de1add605d63 (patch) | |
tree | d3455952e67f409c124e9e254b02b3c7c987b8af /src/ffts_trig.h | |
parent | 6d3047f0ada0b931df9f6c1d49f037931c3c67f3 (diff) | |
download | ffts-9885d87c6335d5b688bdf6b90e78de1add605d63.zip ffts-9885d87c6335d5b688bdf6b90e78de1add605d63.tar.gz |
Move trigonometric stuff to separate file.
Implemented Oscar Buneman's method for generating a sequence of sines and cosines.
Diffstat (limited to 'src/ffts_trig.h')
-rw-r--r-- | src/ffts_trig.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/src/ffts_trig.h b/src/ffts_trig.h new file mode 100644 index 0000000..258c176 --- /dev/null +++ b/src/ffts_trig.h @@ -0,0 +1,48 @@ +/* + +This file is part of FFTS -- The Fastest Fourier Transform in the South + +Copyright (c) 2015, Jukka Ojanen <jukka.ojanen@kolumbus.fi> + +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions are met: +* Redistributions of source code must retain the above copyright +notice, this list of conditions and the following disclaimer. +* Redistributions in binary form must reproduce the above copyright +notice, this list of conditions and the following disclaimer in the +documentation and/or other materials provided with the distribution. +* Neither the name of the organization nor the +names of its contributors may be used to endorse or promote products +derived from this software without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL ANTHONY M. BLAKE BE LIABLE FOR ANY +DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +*/ + +#ifndef FFTS_TRIG_H +#define FFTS_TRIG_H + +#if defined (_MSC_VER) && (_MSC_VER >= 1020) +#pragma once +#endif + +#include "ffts_internal.h" + +int +ffts_generate_cosine_sine_32f(ffts_cpx_32f *const table, int table_size); + +int +ffts_generate_cosine_sine_pow2_32f(ffts_cpx_32f *const table, int table_size); + +#endif /* FFTS_TRIG_H */ |