diff options
Diffstat (limited to 'src/fftw3/rdft/codelets/r2hc/hf_3.c')
| -rw-r--r-- | src/fftw3/rdft/codelets/r2hc/hf_3.c | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/src/fftw3/rdft/codelets/r2hc/hf_3.c b/src/fftw3/rdft/codelets/r2hc/hf_3.c new file mode 100644 index 0000000..fce963f --- /dev/null +++ b/src/fftw3/rdft/codelets/r2hc/hf_3.c @@ -0,0 +1,97 @@ +/* + * 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 21:56:51 EDT 2003 */ + +#include "codelet-rdft.h" + +/* Generated by: /homee/stevenj/cvs/fftw3.0.1/genfft/gen_hc2hc -compact -variables 4 -n 3 -dit -name hf_3 -include hf.h */ + +/* + * This function contains 16 FP additions, 12 FP multiplications, + * (or, 10 additions, 6 multiplications, 6 fused multiply/add), + * 15 stack variables, and 12 memory accesses + */ +/* + * Generator Id's : + * $Id: hf_3.c,v 1.1 2008/10/17 06:12:34 scuri Exp $ + * $Id: hf_3.c,v 1.1 2008/10/17 06:12:34 scuri Exp $ + * $Id: hf_3.c,v 1.1 2008/10/17 06:12:34 scuri Exp $ + */ + +#include "hf.h" + +static const R *hf_3(R *rio, R *iio, const R *W, stride ios, int m, int dist) +{ + DK(KP866025403, +0.866025403784438646763723170752936183471402627); + DK(KP500000000, +0.500000000000000000000000000000000000000000000); + int i; + for (i = m - 2; i > 0; i = i - 2, rio = rio + dist, iio = iio - dist, W = W + 4) { + E T1, Ti, T6, Te, Tb, Tf, Tc, Th; + T1 = rio[0]; + Ti = iio[-WS(ios, 2)]; + { + E T3, T5, T2, T4; + T3 = rio[WS(ios, 1)]; + T5 = iio[-WS(ios, 1)]; + T2 = W[0]; + T4 = W[1]; + T6 = FMA(T2, T3, T4 * T5); + Te = FNMS(T4, T3, T2 * T5); + } + { + E T8, Ta, T7, T9; + T8 = rio[WS(ios, 2)]; + Ta = iio[0]; + T7 = W[2]; + T9 = W[3]; + Tb = FMA(T7, T8, T9 * Ta); + Tf = FNMS(T9, T8, T7 * Ta); + } + Tc = T6 + Tb; + Th = Te + Tf; + rio[0] = T1 + Tc; + iio[0] = Th + Ti; + { + E Td, Tg, Tj, Tk; + Td = FNMS(KP500000000, Tc, T1); + Tg = KP866025403 * (Te - Tf); + iio[-WS(ios, 2)] = Td - Tg; + rio[WS(ios, 1)] = Td + Tg; + Tj = KP866025403 * (Tb - T6); + Tk = FNMS(KP500000000, Th, Ti); + rio[WS(ios, 2)] = Tj - Tk; + iio[-WS(ios, 1)] = Tj + Tk; + } + } + return W; +} + +static const tw_instr twinstr[] = { + {TW_FULL, 0, 3}, + {TW_NEXT, 1, 0} +}; + +static const hc2hc_desc desc = { 3, "hf_3", twinstr, {10, 6, 6, 0}, &GENUS, 0, 0, 0 }; + +void X(codelet_hf_3) (planner *p) { + X(khc2hc_dit_register) (p, hf_3, &desc); +} |