diff options
Diffstat (limited to 'src/fftw3/rdft/codelets/r2hc/r2hc_8.c')
| -rw-r--r-- | src/fftw3/rdft/codelets/r2hc/r2hc_8.c | 92 |
1 files changed, 92 insertions, 0 deletions
diff --git a/src/fftw3/rdft/codelets/r2hc/r2hc_8.c b/src/fftw3/rdft/codelets/r2hc/r2hc_8.c new file mode 100644 index 0000000..b502b94 --- /dev/null +++ b/src/fftw3/rdft/codelets/r2hc/r2hc_8.c @@ -0,0 +1,92 @@ +/* + * 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 21:56:41 EDT 2003 */ + +#include "codelet-rdft.h" + +/* Generated by: /homee/stevenj/cvs/fftw3.0.1/genfft/gen_r2hc -compact -variables 4 -n 8 -name r2hc_8 -include r2hc.h */ + +/* + * This function contains 20 FP additions, 2 FP multiplications, + * (or, 20 additions, 2 multiplications, 0 fused multiply/add), + * 14 stack variables, and 16 memory accesses + */ +/* + * Generator Id's : + * $Id: r2hc_8.c,v 1.1 2008/10/17 06:12:34 scuri Exp $ + * $Id: r2hc_8.c,v 1.1 2008/10/17 06:12:34 scuri Exp $ + * $Id: r2hc_8.c,v 1.1 2008/10/17 06:12:34 scuri Exp $ + */ + +#include "r2hc.h" + +static void r2hc_8(const R *I, R *ro, R *io, stride is, stride ros, stride ios, int v, int ivs, int ovs) +{ + DK(KP707106781, +0.707106781186547524400844362104849039284835938); + int i; + for (i = v; i > 0; i = i - 1, I = I + ivs, ro = ro + ovs, io = io + ovs) { + E T3, T7, Td, Tj, T6, Tg, Ta, Ti; + { + E T1, T2, Tb, Tc; + T1 = I[0]; + T2 = I[WS(is, 4)]; + T3 = T1 + T2; + T7 = T1 - T2; + Tb = I[WS(is, 7)]; + Tc = I[WS(is, 3)]; + Td = Tb - Tc; + Tj = Tb + Tc; + } + { + E T4, T5, T8, T9; + T4 = I[WS(is, 2)]; + T5 = I[WS(is, 6)]; + T6 = T4 + T5; + Tg = T4 - T5; + T8 = I[WS(is, 1)]; + T9 = I[WS(is, 5)]; + Ta = T8 - T9; + Ti = T8 + T9; + } + ro[WS(ros, 2)] = T3 - T6; + io[WS(ios, 2)] = Tj - Ti; + { + E Te, Tf, Th, Tk; + Te = KP707106781 * (Ta + Td); + ro[WS(ros, 3)] = T7 - Te; + ro[WS(ros, 1)] = T7 + Te; + Tf = KP707106781 * (Td - Ta); + io[WS(ios, 1)] = Tf - Tg; + io[WS(ios, 3)] = Tg + Tf; + Th = T3 + T6; + Tk = Ti + Tj; + ro[WS(ros, 4)] = Th - Tk; + ro[0] = Th + Tk; + } + } +} + +static const kr2hc_desc desc = { 8, "r2hc_8", {20, 2, 0, 0}, &GENUS, 0, 0, 0, 0, 0 }; + +void X(codelet_r2hc_8) (planner *p) { + X(kr2hc_register) (p, r2hc_8, &desc); +} |