Mercurial > hg > peckfft
comparison _peck_fft_guts.h @ 12:655dc5c14169
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| author | Peter Meerwald <p.meerwald@bct-electronic.com> |
|---|---|
| date | Thu, 22 Sep 2011 16:58:25 +0200 |
| parents | fee54f1878f7 |
| children |
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| 11:abdcde012978 | 12:655dc5c14169 |
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| 11 | 11 |
| 12 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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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. | 12 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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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. |
| 13 */ | 13 */ |
| 14 | 14 |
| 15 /* peck_fft.h | 15 /* peck_fft.h |
| 16 defines peck_fft_scalar as either short or a float type | 16 * defines peck_fft_scalar as either short or a float type and defines |
| 17 and defines | 17 * typedef struct { peck_fft_scalar r; peck_fft_scalar i; } peck_fft_cpx; |
| 18 typedef struct { peck_fft_scalar r; peck_fft_scalar i; }peck_fft_cpx; */ | 18 */ |
| 19 #include "peck_fft.h" | 19 #include "peck_fft.h" |
| 20 #include <limits.h> | 20 #include <limits.h> |
| 21 | 21 |
| 22 #define MAXFACTORS 32 | 22 #define MAXFACTORS 32 |
| 23 /* e.g. an fft of length 128 has 4 factors | 23 /* e.g. an fft of length 128 has 4 factors |
| 24 as far as kissfft is concerned | 24 * as far as kissfft is concerned: 4*4*4*2 |
| 25 4*4*4*2 | |
| 26 */ | 25 */ |
| 27 | 26 |
| 28 struct peck_fft_state{ | 27 struct peck_fft_state{ |
| 29 int nfft; | 28 int nfft; |
| 30 int inverse; | 29 int inverse; |