diff options
Diffstat (limited to 'src/fftw3/rdft/codelets/r2hc/r2hcII_8.c')
| -rw-r--r-- | src/fftw3/rdft/codelets/r2hc/r2hcII_8.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/src/fftw3/rdft/codelets/r2hc/r2hcII_8.c b/src/fftw3/rdft/codelets/r2hc/r2hcII_8.c new file mode 100644 index 0000000..d6d2aaf --- /dev/null +++ b/src/fftw3/rdft/codelets/r2hc/r2hcII_8.c @@ -0,0 +1,96 @@ +/* + * Copyright (c) 2003 Matteo Frigo + * Copyright (c) 2003 Massachusetts Institute of Technology + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +/* This file was automatically generated --- DO NOT EDIT */ +/* Generated on Sat Jul 5 21:58:04 EDT 2003 */ + +#include "codelet-rdft.h" + +/* Generated by: /homee/stevenj/cvs/fftw3.0.1/genfft/gen_r2hc -compact -variables 4 -n 8 -name r2hcII_8 -dft-II -include r2hcII.h */ + +/* + * This function contains 22 FP additions, 10 FP multiplications, + * (or, 18 additions, 6 multiplications, 4 fused multiply/add), + * 18 stack variables, and 16 memory accesses + */ +/* + * Generator Id's : + * $Id: r2hcII_8.c,v 1.1 2008/10/17 06:12:34 scuri Exp $ + * $Id: r2hcII_8.c,v 1.1 2008/10/17 06:12:34 scuri Exp $ + * $Id: r2hcII_8.c,v 1.1 2008/10/17 06:12:34 scuri Exp $ + */ + +#include "r2hcII.h" + +static void r2hcII_8(const R *I, R *ro, R *io, stride is, stride ros, stride ios, int v, int ivs, int ovs) +{ + DK(KP382683432, +0.382683432365089771728459984030398866761344562); + DK(KP923879532, +0.923879532511286756128183189396788286822416626); + DK(KP707106781, +0.707106781186547524400844362104849039284835938); + int i; + for (i = v; i > 0; i = i - 1, I = I + ivs, ro = ro + ovs, io = io + ovs) { + E T1, Tj, T4, Ti, T8, Te, Tb, Tf, T2, T3; + T1 = I[0]; + Tj = I[WS(is, 4)]; + T2 = I[WS(is, 2)]; + T3 = I[WS(is, 6)]; + T4 = KP707106781 * (T2 - T3); + Ti = KP707106781 * (T2 + T3); + { + E T6, T7, T9, Ta; + T6 = I[WS(is, 1)]; + T7 = I[WS(is, 5)]; + T8 = FNMS(KP382683432, T7, KP923879532 * T6); + Te = FMA(KP382683432, T6, KP923879532 * T7); + T9 = I[WS(is, 3)]; + Ta = I[WS(is, 7)]; + Tb = FNMS(KP923879532, Ta, KP382683432 * T9); + Tf = FMA(KP923879532, T9, KP382683432 * Ta); + } + { + E T5, Tc, Th, Tk; + T5 = T1 + T4; + Tc = T8 + Tb; + ro[WS(ros, 3)] = T5 - Tc; + ro[0] = T5 + Tc; + Th = Te + Tf; + Tk = Ti + Tj; + io[0] = -(Th + Tk); + io[WS(ios, 3)] = Tk - Th; + } + { + E Td, Tg, Tl, Tm; + Td = T1 - T4; + Tg = Te - Tf; + ro[WS(ros, 2)] = Td - Tg; + ro[WS(ros, 1)] = Td + Tg; + Tl = Tb - T8; + Tm = Tj - Ti; + io[WS(ios, 2)] = Tl - Tm; + io[WS(ios, 1)] = Tl + Tm; + } + } +} + +static const kr2hc_desc desc = { 8, "r2hcII_8", {18, 6, 4, 0}, &GENUS, 0, 0, 0, 0, 0 }; + +void X(codelet_r2hcII_8) (planner *p) { + X(kr2hcII_register) (p, r2hcII_8, &desc); +} |