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comparison src/fftw-3.3.8/rdft/scalar/r2cb/r2cbIII_6.c @ 167:bd3cc4d1df30

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Add FFTW 3.3.8 source, and a Linux build
author Chris Cannam <cannam@all-day-breakfast.com>
date Tue, 19 Nov 2019 14:52:55 +0000
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166:cbd6d7e562c7 167:bd3cc4d1df30
1 /*
2 * Copyright (c) 2003, 2007-14 Matteo Frigo
3 * Copyright (c) 2003, 2007-14 Massachusetts Institute of Technology
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 *
19 */
20
21 /* This file was automatically generated --- DO NOT EDIT */
22 /* Generated on Thu May 24 08:07:42 EDT 2018 */
23
24 #include "rdft/codelet-rdft.h"
25
26 #if defined(ARCH_PREFERS_FMA) || defined(ISA_EXTENSION_PREFERS_FMA)
27
28 /* Generated by: ../../../genfft/gen_r2cb.native -fma -compact -variables 4 -pipeline-latency 4 -sign 1 -n 6 -name r2cbIII_6 -dft-III -include rdft/scalar/r2cbIII.h */
29
30 /*
31 * This function contains 12 FP additions, 8 FP multiplications,
32 * (or, 6 additions, 2 multiplications, 6 fused multiply/add),
33 * 15 stack variables, 2 constants, and 12 memory accesses
34 */
35 #include "rdft/scalar/r2cbIII.h"
36
37 static void r2cbIII_6(R *R0, R *R1, R *Cr, R *Ci, stride rs, stride csr, stride csi, INT v, INT ivs, INT ovs)
38 {
39 DK(KP1_732050807, +1.732050807568877293527446341505872366942805254);
40 DK(KP2_000000000, +2.000000000000000000000000000000000000000000000);
41 {
42 INT i;
43 for (i = v; i > 0; i = i - 1, R0 = R0 + ovs, R1 = R1 + ovs, Cr = Cr + ivs, Ci = Ci + ivs, MAKE_VOLATILE_STRIDE(24, rs), MAKE_VOLATILE_STRIDE(24, csr), MAKE_VOLATILE_STRIDE(24, csi)) {
44 E T1, T8, T4, Ta, T7, Tc, T9, Tb;
45 T1 = Cr[WS(csr, 1)];
46 T8 = Ci[WS(csi, 1)];
47 {
48 E T2, T3, T5, T6;
49 T2 = Cr[WS(csr, 2)];
50 T3 = Cr[0];
51 T4 = T2 + T3;
52 Ta = T2 - T3;
53 T5 = Ci[WS(csi, 2)];
54 T6 = Ci[0];
55 T7 = T5 + T6;
56 Tc = T5 - T6;
57 }
58 R0[0] = KP2_000000000 * (T1 + T4);
59 R1[WS(rs, 1)] = KP2_000000000 * (T8 - T7);
60 T9 = FMA(KP2_000000000, T8, T7);
61 R1[0] = -(FMA(KP1_732050807, Ta, T9));
62 R1[WS(rs, 2)] = FMS(KP1_732050807, Ta, T9);
63 Tb = FNMS(KP2_000000000, T1, T4);
64 R0[WS(rs, 1)] = FMA(KP1_732050807, Tc, Tb);
65 R0[WS(rs, 2)] = FMS(KP1_732050807, Tc, Tb);
66 }
67 }
68 }
69
70 static const kr2c_desc desc = { 6, "r2cbIII_6", {6, 2, 6, 0}, &GENUS };
71
72 void X(codelet_r2cbIII_6) (planner *p) {
73 X(kr2c_register) (p, r2cbIII_6, &desc);
74 }
75
76 #else
77
78 /* Generated by: ../../../genfft/gen_r2cb.native -compact -variables 4 -pipeline-latency 4 -sign 1 -n 6 -name r2cbIII_6 -dft-III -include rdft/scalar/r2cbIII.h */
79
80 /*
81 * This function contains 12 FP additions, 6 FP multiplications,
82 * (or, 10 additions, 4 multiplications, 2 fused multiply/add),
83 * 15 stack variables, 2 constants, and 12 memory accesses
84 */
85 #include "rdft/scalar/r2cbIII.h"
86
87 static void r2cbIII_6(R *R0, R *R1, R *Cr, R *Ci, stride rs, stride csr, stride csi, INT v, INT ivs, INT ovs)
88 {
89 DK(KP2_000000000, +2.000000000000000000000000000000000000000000000);
90 DK(KP1_732050807, +1.732050807568877293527446341505872366942805254);
91 {
92 INT i;
93 for (i = v; i > 0; i = i - 1, R0 = R0 + ovs, R1 = R1 + ovs, Cr = Cr + ivs, Ci = Ci + ivs, MAKE_VOLATILE_STRIDE(24, rs), MAKE_VOLATILE_STRIDE(24, csr), MAKE_VOLATILE_STRIDE(24, csi)) {
94 E T1, T6, T4, T5, T9, Tb, Ta, Tc;
95 T1 = Cr[WS(csr, 1)];
96 T6 = Ci[WS(csi, 1)];
97 {
98 E T2, T3, T7, T8;
99 T2 = Cr[WS(csr, 2)];
100 T3 = Cr[0];
101 T4 = T2 + T3;
102 T5 = KP1_732050807 * (T2 - T3);
103 T7 = Ci[WS(csi, 2)];
104 T8 = Ci[0];
105 T9 = T7 + T8;
106 Tb = KP1_732050807 * (T7 - T8);
107 }
108 R0[0] = KP2_000000000 * (T1 + T4);
109 R1[WS(rs, 1)] = KP2_000000000 * (T6 - T9);
110 Ta = FMA(KP2_000000000, T6, T9);
111 R1[0] = -(T5 + Ta);
112 R1[WS(rs, 2)] = T5 - Ta;
113 Tc = FMS(KP2_000000000, T1, T4);
114 R0[WS(rs, 1)] = Tb - Tc;
115 R0[WS(rs, 2)] = Tc + Tb;
116 }
117 }
118 }
119
120 static const kr2c_desc desc = { 6, "r2cbIII_6", {10, 4, 2, 0}, &GENUS };
121
122 void X(codelet_r2cbIII_6) (planner *p) {
123 X(kr2c_register) (p, r2cbIII_6, &desc);
124 }
125
126 #endif