diff options
Diffstat (limited to 'src/fftw3/rdft/codelets/r2hc/r2hcII_4.c')
| -rw-r--r-- | src/fftw3/rdft/codelets/r2hc/r2hcII_4.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/src/fftw3/rdft/codelets/r2hc/r2hcII_4.c b/src/fftw3/rdft/codelets/r2hc/r2hcII_4.c new file mode 100644 index 0000000..94aaf84 --- /dev/null +++ b/src/fftw3/rdft/codelets/r2hc/r2hcII_4.c @@ -0,0 +1,65 @@ +/* + * 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 21:58:02 EDT 2003 */ + +#include "codelet-rdft.h" + +/* Generated by: /homee/stevenj/cvs/fftw3.0.1/genfft/gen_r2hc -compact -variables 4 -n 4 -name r2hcII_4 -dft-II -include r2hcII.h */ + +/* + * This function contains 6 FP additions, 2 FP multiplications, + * (or, 6 additions, 2 multiplications, 0 fused multiply/add), + * 8 stack variables, and 8 memory accesses + */ +/* + * Generator Id's : + * $Id: r2hcII_4.c,v 1.1 2008/10/17 06:12:34 scuri Exp $ + * $Id: r2hcII_4.c,v 1.1 2008/10/17 06:12:34 scuri Exp $ + * $Id: r2hcII_4.c,v 1.1 2008/10/17 06:12:34 scuri Exp $ + */ + +#include "r2hcII.h" + +static void r2hcII_4(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 T1, T6, T4, T5, T2, T3; + T1 = I[0]; + T6 = I[WS(is, 2)]; + T2 = I[WS(is, 1)]; + T3 = I[WS(is, 3)]; + T4 = KP707106781 * (T2 - T3); + T5 = KP707106781 * (T2 + T3); + ro[WS(ros, 1)] = T1 - T4; + io[WS(ios, 1)] = T6 - T5; + ro[0] = T1 + T4; + io[0] = -(T5 + T6); + } +} + +static const kr2hc_desc desc = { 4, "r2hcII_4", {6, 2, 0, 0}, &GENUS, 0, 0, 0, 0, 0 }; + +void X(codelet_r2hcII_4) (planner *p) { + X(kr2hcII_register) (p, r2hcII_4, &desc); +} |