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53 lines
2.1 KiB
Plaintext
53 lines
2.1 KiB
Plaintext
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Copyright (c) 2013 Julien Pommier ( pommier@modartt.com )
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Based on original fortran 77 code from FFTPACKv4 from NETLIB
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(http://www.netlib.org/fftpack), authored by Dr Paul Swarztrauber
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of NCAR, in 1985.
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As confirmed by the NCAR fftpack software curators, the following
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FFTPACKv5 license applies to FFTPACKv4 sources. My changes are
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released under the same terms.
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FFTPACK license:
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http://www.cisl.ucar.edu/css/software/fftpack5/ftpk.html
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Copyright (c) 2004 the University Corporation for Atmospheric
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Research ("UCAR"). All rights reserved. Developed by NCAR's
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Computational and Information Systems Laboratory, UCAR,
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www.cisl.ucar.edu.
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Redistribution and use of the Software in source and binary forms,
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with or without modification, is permitted provided that the
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following conditions are met:
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- Neither the names of NCAR's Computational and Information Systems
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Laboratory, the University Corporation for Atmospheric Research,
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nor the names of its sponsors or contributors may be used to
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endorse or promote products derived from this Software without
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specific prior written permission.
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- Redistributions of source code must retain the above copyright
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notices, this list of conditions, and the disclaimer below.
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- Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions, and the disclaimer below in the
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documentation and/or other materials provided with the
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distribution.
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THIS SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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NONINFRINGEMENT. IN NO EVENT SHALL THE CONTRIBUTORS OR COPYRIGHT
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HOLDERS BE LIABLE FOR ANY CLAIM, INDIRECT, INCIDENTAL, SPECIAL,
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EXEMPLARY, OR CONSEQUENTIAL DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE
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SOFTWARE.
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PFFFT : a Pretty Fast FFT.
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This file is largerly based on the original FFTPACK implementation, modified in
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order to take advantage of SIMD instructions of modern CPUs.
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