+++ /dev/null
-/* -------------------------------------------------------------- */
-/* (C)Copyright 2001,2007, */
-/* International Business Machines Corporation, */
-/* Sony Computer Entertainment, Incorporated, */
-/* Toshiba Corporation, */
-/* */
-/* 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 IBM Corporation 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 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. */
-/* -------------------------------------------------------------- */
-/* PROLOG END TAG zYx */
-#ifndef _FFT_1D_H_
-#define _FFT_1D_H_ 1
-
-#include <spu_intrinsics.h>
-
-/* BIT_SWAP - swaps up to 16 bits of the integer _i according to the
- * pattern specified by _pat.
- */
-#define BIT_SWAP(_i, _pat) spu_extract(spu_gather(spu_shuffle(spu_maskb(_i), _pat, _pat)), 0)
-
-
-#ifndef MAX_FFT_1D_SIZE
-#define MAX_FFT_1D_SIZE 8192
-#endif
-
-#ifndef INV_SQRT_2
-#define INV_SQRT_2 0.7071067811865
-#endif
-
-
-/* The following macro, FFT_1D_BUTTERFLY, performs a 4 way SIMD basic butterfly
- * operation. The inputs are in parallel arrays (seperate real and imaginary
- * vectors).
- *
- * p --------------------------> P = p + q*Wi
- * \ /
- * \ /
- * \ /
- * \/
- * /\
- * / \
- * / \
- * ____ / \
- * q --| Wi |-----------------> Q = p - q*Wi
- * ----
- */
-
-#define FFT_1D_BUTTERFLY(_P_re, _P_im, _Q_re, _Q_im, _p_re, _p_im, _q_re, _q_im, _W_re, _W_im) { \
- vector float _qw_re, _qw_im; \
- \
- _qw_re = spu_msub(_q_re, _W_re, spu_mul(_q_im, _W_im)); \
- _qw_im = spu_madd(_q_re, _W_im, spu_mul(_q_im, _W_re)); \
- _P_re = spu_add(_p_re, _qw_re); \
- _P_im = spu_add(_p_im, _qw_im); \
- _Q_re = spu_sub(_p_re, _qw_re); \
- _Q_im = spu_sub(_p_im, _qw_im); \
-}
-
-
-/* FFT_1D_BUTTERFLY_HI is equivalent to FFT_1D_BUTTERFLY with twiddle factors (W_im, -W_re)
- */
-#define FFT_1D_BUTTERFLY_HI(_P_re, _P_im, _Q_re, _Q_im, _p_re, _p_im, _q_re, _q_im, _W_re, _W_im) { \
- vector float _qw_re, _qw_im; \
- \
- _qw_re = spu_madd(_q_re, _W_im, spu_mul(_q_im, _W_re)); \
- _qw_im = spu_msub(_q_im, _W_im, spu_mul(_q_re, _W_re)); \
- _P_re = spu_add(_p_re, _qw_re); \
- _P_im = spu_add(_p_im, _qw_im); \
- _Q_re = spu_sub(_p_re, _qw_re); \
- _Q_im = spu_sub(_p_im, _qw_im); \
-}
-
-#endif /* _FFT_1D_H_ */
projects / debian / gnuradio / blobdiff