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1 /*
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2 * Copyright (c) 2003, 2007-8 Matteo Frigo
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3 * Copyright (c) 2003, 2007-8 Massachusetts Institute of Technology
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4 *
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5 * This program is free software; you can redistribute it and/or modify
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6 * it under the terms of the GNU General Public License as published by
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7 * the Free Software Foundation; either version 2 of the License, or
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8 * (at your option) any later version.
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9 *
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10 * This program is distributed in the hope that it will be useful,
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11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 * GNU General Public License for more details.
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14 *
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15 * You should have received a copy of the GNU General Public License
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16 * along with this program; if not, write to the Free Software
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17 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18 *
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19 */
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20 /* Generated by: ../../genfft/gen_twiddle_c -standalone -fma -reorder-insns -simd -compact -variables 100000 -include fftw-spu.h -trivial-stores -n 3 -name X(spu_t1fv_3) */
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21
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22 /*
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23 * This function contains 8 FP additions, 8 FP multiplications,
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24 * (or, 5 additions, 5 multiplications, 3 fused multiply/add),
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25 * 15 stack variables, 2 constants, and 6 memory accesses
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26 */
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27 #include "fftw-spu.h"
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28
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29 void X(spu_t1fv_3) (R *ri, R *ii, const R *W, stride rs, INT mb, INT me, INT ms) {
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30 DVK(KP500000000, +0.500000000000000000000000000000000000000000000);
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31 DVK(KP866025403, +0.866025403784438646763723170752936183471402627);
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32 INT m;
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33 R *x;
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34 x = ri;
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35 for (m = mb, W = W + (mb * ((TWVL / VL) * 4)); m < me; m = m + VL, x = x + (VL * ms), W = W + (TWVL * 4), MAKE_VOLATILE_STRIDE(rs)) {
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36 V T1, T6, T9, T3, T5, T2, T4, T8, T7, Tb, Ta;
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37 T1 = LD(&(x[0]), ms, &(x[0]));
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38 T2 = LD(&(x[WS(rs, 1)]), ms, &(x[WS(rs, 1)]));
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39 T3 = BYTWJ(&(W[0]), T2);
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40 T4 = LD(&(x[WS(rs, 2)]), ms, &(x[0]));
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41 T5 = BYTWJ(&(W[TWVL * 2]), T4);
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42 T6 = VADD(T3, T5);
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43 T9 = VMUL(LDK(KP866025403), VSUB(T5, T3));
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44 T7 = VADD(T1, T6);
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45 T8 = VFNMS(LDK(KP500000000), T6, T1);
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46 ST(&(x[0]), T7, ms, &(x[0]));
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47 Tb = VFMAI(T9, T8);
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48 Ta = VFNMSI(T9, T8);
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49 ST(&(x[WS(rs, 2)]), Ta, ms, &(x[0]));
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50 ST(&(x[WS(rs, 1)]), Tb, ms, &(x[WS(rs, 1)]));
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51 }
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52 }
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