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| author | Timothy Pearson <tpearson@raptorengineering.com> | 2024-08-24 13:04:45 -0500 |
|---|---|---|
| committer | Timothy Pearson <tpearson@raptorengineering.com> | 2024-08-24 13:51:05 -0500 |
| commit | 2ef6dba8728db2437def9a4fc1d3e20e0aa44c31 (patch) | |
| tree | 5211805789c78639d6b96a89bd0a4a96078d0fd9 /lib/ffts/src/ffts_trig.h | |
| parent | c40a208abbc778da4271485eba06a89d05c69b5e (diff) | |
| download | ulab-2ef6dba8728db2437def9a4fc1d3e20e0aa44c31.tar.gz ulab-2ef6dba8728db2437def9a4fc1d3e20e0aa44c31.zip | |
Revup FFTS to latest upstream version
Taken from https://github.com/linkotec/ffts
Fixes ppc64el support and a handful of other bugs
Diffstat (limited to 'lib/ffts/src/ffts_trig.h')
| -rw-r--r-- | lib/ffts/src/ffts_trig.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/lib/ffts/src/ffts_trig.h b/lib/ffts/src/ffts_trig.h index 0b22738..f988340 100644 --- a/lib/ffts/src/ffts_trig.h +++ b/lib/ffts/src/ffts_trig.h @@ -2,7 +2,7 @@ This file is part of FFTS -- The Fastest Fourier Transform in the South -Copyright (c) 2015, Jukka Ojanen <jukka.ojanen@kolumbus.fi> +Copyright (c) 2015-2016, Jukka Ojanen <jukka.ojanen@kolumbus.fi> All rights reserved. @@ -39,8 +39,16 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #include "ffts_internal.h" +/* calculate cos(pi * n / d) and sin(pi * n / d) with maximum error less than 1 ULP, average ~0.5 ULP */ int -ffts_generate_cosine_sine_32f(ffts_cpx_32f *const table, int table_size); +ffts_cexp_32f(size_t n, size_t d, float *output); + +int +ffts_generate_chirp_32f(ffts_cpx_32f *const table, size_t table_size); + +/* generate cosine and sine tables with maximum error less than 1 ULP, average ~0.5 ULP */ +int +ffts_generate_cosine_sine_32f(ffts_cpx_32f *const table, size_t table_size); int ffts_generate_cosine_sine_pow2_32f(ffts_cpx_32f *const table, int table_size); |