diff options
Diffstat (limited to 'src/fftw3/rdft/codelets/hc2r/hb_4.c')
| -rw-r--r-- | src/fftw3/rdft/codelets/hc2r/hb_4.c | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/src/fftw3/rdft/codelets/hc2r/hb_4.c b/src/fftw3/rdft/codelets/hc2r/hb_4.c new file mode 100644 index 0000000..ac05b69 --- /dev/null +++ b/src/fftw3/rdft/codelets/hc2r/hb_4.c @@ -0,0 +1,111 @@ +/* + * 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 22:11:22 EDT 2003 */ + +#include "codelet-rdft.h" + +/* Generated by: /homee/stevenj/cvs/fftw3.0.1/genfft/gen_hc2hc -compact -variables 4 -sign 1 -n 4 -dif -name hb_4 -include hb.h */ + +/* + * This function contains 22 FP additions, 12 FP multiplications, + * (or, 16 additions, 6 multiplications, 6 fused multiply/add), + * 13 stack variables, and 16 memory accesses + */ +/* + * Generator Id's : + * $Id: hb_4.c,v 1.1 2008/10/17 06:12:08 scuri Exp $ + * $Id: hb_4.c,v 1.1 2008/10/17 06:12:08 scuri Exp $ + * $Id: hb_4.c,v 1.1 2008/10/17 06:12:08 scuri Exp $ + */ + +#include "hb.h" + +static const R *hb_4(R *rio, R *iio, const R *W, stride ios, int m, int dist) +{ + int i; + for (i = m - 2; i > 0; i = i - 2, rio = rio + dist, iio = iio - dist, W = W + 6) { + E T3, Ti, Tc, Tn, T6, Tm, Tf, Tj; + { + E T1, T2, Ta, Tb; + T1 = rio[0]; + T2 = iio[-WS(ios, 2)]; + T3 = T1 + T2; + Ti = T1 - T2; + Ta = iio[0]; + Tb = rio[WS(ios, 2)]; + Tc = Ta - Tb; + Tn = Ta + Tb; + } + { + E T4, T5, Td, Te; + T4 = rio[WS(ios, 1)]; + T5 = iio[-WS(ios, 3)]; + T6 = T4 + T5; + Tm = T4 - T5; + Td = iio[-WS(ios, 1)]; + Te = rio[WS(ios, 3)]; + Tf = Td - Te; + Tj = Td + Te; + } + rio[0] = T3 + T6; + iio[-WS(ios, 3)] = Tc + Tf; + { + E Tq, Ts, Tp, Tr; + Tq = Tn - Tm; + Ts = Ti + Tj; + Tp = W[4]; + Tr = W[5]; + iio[0] = FMA(Tp, Tq, Tr * Ts); + rio[WS(ios, 3)] = FNMS(Tr, Tq, Tp * Ts); + } + { + E T8, Tg, T7, T9; + T8 = T3 - T6; + Tg = Tc - Tf; + T7 = W[2]; + T9 = W[3]; + rio[WS(ios, 2)] = FNMS(T9, Tg, T7 * T8); + iio[-WS(ios, 1)] = FMA(T9, T8, T7 * Tg); + } + { + E Tk, To, Th, Tl; + Tk = Ti - Tj; + To = Tm + Tn; + Th = W[0]; + Tl = W[1]; + rio[WS(ios, 1)] = FNMS(Tl, To, Th * Tk); + iio[-WS(ios, 2)] = FMA(Th, To, Tl * Tk); + } + } + return W; +} + +static const tw_instr twinstr[] = { + {TW_FULL, 0, 4}, + {TW_NEXT, 1, 0} +}; + +static const hc2hc_desc desc = { 4, "hb_4", twinstr, {16, 6, 6, 0}, &GENUS, 0, 0, 0 }; + +void X(codelet_hb_4) (planner *p) { + X(khc2hc_dif_register) (p, hb_4, &desc); +} |