1 /* ----------------------------------------------------------------------
2 * Copyright (C) 2010 ARM Limited. All rights reserved.
7 * Project: CMSIS DSP Library
8 * Title: arm_rfft_init_q15.c
10 * Description: RFFT & RIFFT Q15 initialisation function
12 * Target Processor: Cortex-M4/Cortex-M3/Cortex-M0
14 * Version 1.0.10 2011/7/15
15 * Big Endian support added and Merged M0 and M3/M4 Source code.
17 * Version 1.0.3 2010/11/29
18 * Re-organized the CMSIS folders and updated documentation.
20 * Version 1.0.2 2010/11/11
21 * Documentation updated.
23 * Version 1.0.1 2010/10/05
24 * Production release and review comments incorporated.
26 * Version 1.0.0 2010/09/20
27 * Production release and review comments incorporated
29 * Version 0.0.7 2010/06/10
30 * Misra-C changes done
31 * -------------------------------------------------------------------- */
37 * @ingroup groupTransforms
41 * @addtogroup RFFT_RIFFT
49 * Generation floating point real_CoefA array:
52 * <pre>for (i = 0; i < n; i++)
54 * pATable[2 * i] = 0.5 * (1.0 - sin (2 * PI / (double) (2 * n) * (double) i));
55 * pATable[2 * i + 1] = 0.5 * (-1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
58 * Convert to fixed point Q15 format
59 * round(pATable[i] * pow(2, 15))
63 static const q15_t realCoefAQ15[2048] = {
65 0x4000, 0xc000, 0x3fce, 0xc000, 0x3f9b, 0xc000, 0x3f69, 0xc001,
66 0x3f37, 0xc001, 0x3f05, 0xc002, 0x3ed2, 0xc003, 0x3ea0, 0xc004,
67 0x3e6e, 0xc005, 0x3e3c, 0xc006, 0x3e09, 0xc008, 0x3dd7, 0xc009,
68 0x3da5, 0xc00b, 0x3d73, 0xc00d, 0x3d40, 0xc00f, 0x3d0e, 0xc011,
69 0x3cdc, 0xc014, 0x3caa, 0xc016, 0x3c78, 0xc019, 0x3c45, 0xc01c,
70 0x3c13, 0xc01f, 0x3be1, 0xc022, 0x3baf, 0xc025, 0x3b7d, 0xc029,
71 0x3b4b, 0xc02c, 0x3b19, 0xc030, 0x3ae6, 0xc034, 0x3ab4, 0xc038,
72 0x3a82, 0xc03c, 0x3a50, 0xc041, 0x3a1e, 0xc045, 0x39ec, 0xc04a,
73 0x39ba, 0xc04f, 0x3988, 0xc054, 0x3956, 0xc059, 0x3924, 0xc05e,
74 0x38f2, 0xc064, 0x38c0, 0xc069, 0x388e, 0xc06f, 0x385c, 0xc075,
75 0x382a, 0xc07b, 0x37f9, 0xc081, 0x37c7, 0xc088, 0x3795, 0xc08e,
76 0x3763, 0xc095, 0x3731, 0xc09c, 0x36ff, 0xc0a3, 0x36ce, 0xc0aa,
77 0x369c, 0xc0b1, 0x366a, 0xc0b9, 0x3639, 0xc0c0, 0x3607, 0xc0c8,
78 0x35d5, 0xc0d0, 0x35a4, 0xc0d8, 0x3572, 0xc0e0, 0x3540, 0xc0e9,
79 0x350f, 0xc0f1, 0x34dd, 0xc0fa, 0x34ac, 0xc103, 0x347b, 0xc10c,
80 0x3449, 0xc115, 0x3418, 0xc11e, 0x33e6, 0xc128, 0x33b5, 0xc131,
81 0x3384, 0xc13b, 0x3352, 0xc145, 0x3321, 0xc14f, 0x32f0, 0xc159,
82 0x32bf, 0xc163, 0x328e, 0xc16e, 0x325c, 0xc178, 0x322b, 0xc183,
83 0x31fa, 0xc18e, 0x31c9, 0xc199, 0x3198, 0xc1a4, 0x3167, 0xc1b0,
84 0x3136, 0xc1bb, 0x3105, 0xc1c7, 0x30d5, 0xc1d3, 0x30a4, 0xc1df,
85 0x3073, 0xc1eb, 0x3042, 0xc1f7, 0x3012, 0xc204, 0x2fe1, 0xc210,
86 0x2fb0, 0xc21d, 0x2f80, 0xc22a, 0x2f4f, 0xc237, 0x2f1f, 0xc244,
87 0x2eee, 0xc251, 0x2ebe, 0xc25f, 0x2e8d, 0xc26d, 0x2e5d, 0xc27a,
88 0x2e2d, 0xc288, 0x2dfc, 0xc296, 0x2dcc, 0xc2a5, 0x2d9c, 0xc2b3,
89 0x2d6c, 0xc2c1, 0x2d3c, 0xc2d0, 0x2d0c, 0xc2df, 0x2cdc, 0xc2ee,
90 0x2cac, 0xc2fd, 0x2c7c, 0xc30c, 0x2c4c, 0xc31c, 0x2c1c, 0xc32b,
91 0x2bed, 0xc33b, 0x2bbd, 0xc34b, 0x2b8d, 0xc35b, 0x2b5e, 0xc36b,
92 0x2b2e, 0xc37b, 0x2aff, 0xc38c, 0x2acf, 0xc39c, 0x2aa0, 0xc3ad,
93 0x2a70, 0xc3be, 0x2a41, 0xc3cf, 0x2a12, 0xc3e0, 0x29e3, 0xc3f1,
94 0x29b4, 0xc403, 0x2984, 0xc414, 0x2955, 0xc426, 0x2926, 0xc438,
95 0x28f7, 0xc44a, 0x28c9, 0xc45c, 0x289a, 0xc46e, 0x286b, 0xc481,
96 0x283c, 0xc493, 0x280e, 0xc4a6, 0x27df, 0xc4b9, 0x27b1, 0xc4cc,
97 0x2782, 0xc4df, 0x2754, 0xc4f2, 0x2725, 0xc506, 0x26f7, 0xc51a,
98 0x26c9, 0xc52d, 0x269b, 0xc541, 0x266d, 0xc555, 0x263f, 0xc569,
99 0x2611, 0xc57e, 0x25e3, 0xc592, 0x25b5, 0xc5a7, 0x2587, 0xc5bb,
100 0x2559, 0xc5d0, 0x252c, 0xc5e5, 0x24fe, 0xc5fa, 0x24d0, 0xc610,
101 0x24a3, 0xc625, 0x2476, 0xc63b, 0x2448, 0xc650, 0x241b, 0xc666,
102 0x23ee, 0xc67c, 0x23c1, 0xc692, 0x2394, 0xc6a8, 0x2367, 0xc6bf,
103 0x233a, 0xc6d5, 0x230d, 0xc6ec, 0x22e0, 0xc703, 0x22b3, 0xc71a,
104 0x2287, 0xc731, 0x225a, 0xc748, 0x222d, 0xc75f, 0x2201, 0xc777,
105 0x21d5, 0xc78f, 0x21a8, 0xc7a6, 0x217c, 0xc7be, 0x2150, 0xc7d6,
106 0x2124, 0xc7ee, 0x20f8, 0xc807, 0x20cc, 0xc81f, 0x20a0, 0xc838,
107 0x2074, 0xc850, 0x2049, 0xc869, 0x201d, 0xc882, 0x1ff1, 0xc89b,
108 0x1fc6, 0xc8b5, 0x1f9b, 0xc8ce, 0x1f6f, 0xc8e8, 0x1f44, 0xc901,
109 0x1f19, 0xc91b, 0x1eee, 0xc935, 0x1ec3, 0xc94f, 0x1e98, 0xc969,
110 0x1e6d, 0xc983, 0x1e42, 0xc99e, 0x1e18, 0xc9b8, 0x1ded, 0xc9d3,
111 0x1dc3, 0xc9ee, 0x1d98, 0xca09, 0x1d6e, 0xca24, 0x1d44, 0xca3f,
112 0x1d19, 0xca5b, 0x1cef, 0xca76, 0x1cc5, 0xca92, 0x1c9b, 0xcaad,
113 0x1c72, 0xcac9, 0x1c48, 0xcae5, 0x1c1e, 0xcb01, 0x1bf5, 0xcb1e,
114 0x1bcb, 0xcb3a, 0x1ba2, 0xcb56, 0x1b78, 0xcb73, 0x1b4f, 0xcb90,
115 0x1b26, 0xcbad, 0x1afd, 0xcbca, 0x1ad4, 0xcbe7, 0x1aab, 0xcc04,
116 0x1a82, 0xcc21, 0x1a5a, 0xcc3f, 0x1a31, 0xcc5d, 0x1a08, 0xcc7a,
117 0x19e0, 0xcc98, 0x19b8, 0xccb6, 0x198f, 0xccd4, 0x1967, 0xccf3,
118 0x193f, 0xcd11, 0x1917, 0xcd30, 0x18ef, 0xcd4e, 0x18c8, 0xcd6d,
119 0x18a0, 0xcd8c, 0x1878, 0xcdab, 0x1851, 0xcdca, 0x182a, 0xcde9,
120 0x1802, 0xce08, 0x17db, 0xce28, 0x17b4, 0xce47, 0x178d, 0xce67,
121 0x1766, 0xce87, 0x173f, 0xcea7, 0x1719, 0xcec7, 0x16f2, 0xcee7,
122 0x16cb, 0xcf07, 0x16a5, 0xcf28, 0x167f, 0xcf48, 0x1659, 0xcf69,
123 0x1632, 0xcf8a, 0x160c, 0xcfab, 0x15e6, 0xcfcc, 0x15c1, 0xcfed,
124 0x159b, 0xd00e, 0x1575, 0xd030, 0x1550, 0xd051, 0x152a, 0xd073,
125 0x1505, 0xd094, 0x14e0, 0xd0b6, 0x14bb, 0xd0d8, 0x1496, 0xd0fa,
126 0x1471, 0xd11c, 0x144c, 0xd13e, 0x1428, 0xd161, 0x1403, 0xd183,
127 0x13df, 0xd1a6, 0x13ba, 0xd1c9, 0x1396, 0xd1eb, 0x1372, 0xd20e,
128 0x134e, 0xd231, 0x132a, 0xd255, 0x1306, 0xd278, 0x12e2, 0xd29b,
129 0x12bf, 0xd2bf, 0x129b, 0xd2e2, 0x1278, 0xd306, 0x1255, 0xd32a,
130 0x1231, 0xd34e, 0x120e, 0xd372, 0x11eb, 0xd396, 0x11c9, 0xd3ba,
131 0x11a6, 0xd3df, 0x1183, 0xd403, 0x1161, 0xd428, 0x113e, 0xd44c,
132 0x111c, 0xd471, 0x10fa, 0xd496, 0x10d8, 0xd4bb, 0x10b6, 0xd4e0,
133 0x1094, 0xd505, 0x1073, 0xd52a, 0x1051, 0xd550, 0x1030, 0xd575,
134 0x100e, 0xd59b, 0xfed, 0xd5c1, 0xfcc, 0xd5e6, 0xfab, 0xd60c,
135 0xf8a, 0xd632, 0xf69, 0xd659, 0xf48, 0xd67f, 0xf28, 0xd6a5,
136 0xf07, 0xd6cb, 0xee7, 0xd6f2, 0xec7, 0xd719, 0xea7, 0xd73f,
137 0xe87, 0xd766, 0xe67, 0xd78d, 0xe47, 0xd7b4, 0xe28, 0xd7db,
138 0xe08, 0xd802, 0xde9, 0xd82a, 0xdca, 0xd851, 0xdab, 0xd878,
139 0xd8c, 0xd8a0, 0xd6d, 0xd8c8, 0xd4e, 0xd8ef, 0xd30, 0xd917,
140 0xd11, 0xd93f, 0xcf3, 0xd967, 0xcd4, 0xd98f, 0xcb6, 0xd9b8,
141 0xc98, 0xd9e0, 0xc7a, 0xda08, 0xc5d, 0xda31, 0xc3f, 0xda5a,
142 0xc21, 0xda82, 0xc04, 0xdaab, 0xbe7, 0xdad4, 0xbca, 0xdafd,
143 0xbad, 0xdb26, 0xb90, 0xdb4f, 0xb73, 0xdb78, 0xb56, 0xdba2,
144 0xb3a, 0xdbcb, 0xb1e, 0xdbf5, 0xb01, 0xdc1e, 0xae5, 0xdc48,
145 0xac9, 0xdc72, 0xaad, 0xdc9b, 0xa92, 0xdcc5, 0xa76, 0xdcef,
146 0xa5b, 0xdd19, 0xa3f, 0xdd44, 0xa24, 0xdd6e, 0xa09, 0xdd98,
147 0x9ee, 0xddc3, 0x9d3, 0xdded, 0x9b8, 0xde18, 0x99e, 0xde42,
148 0x983, 0xde6d, 0x969, 0xde98, 0x94f, 0xdec3, 0x935, 0xdeee,
149 0x91b, 0xdf19, 0x901, 0xdf44, 0x8e8, 0xdf6f, 0x8ce, 0xdf9b,
150 0x8b5, 0xdfc6, 0x89b, 0xdff1, 0x882, 0xe01d, 0x869, 0xe049,
151 0x850, 0xe074, 0x838, 0xe0a0, 0x81f, 0xe0cc, 0x807, 0xe0f8,
152 0x7ee, 0xe124, 0x7d6, 0xe150, 0x7be, 0xe17c, 0x7a6, 0xe1a8,
153 0x78f, 0xe1d5, 0x777, 0xe201, 0x75f, 0xe22d, 0x748, 0xe25a,
154 0x731, 0xe287, 0x71a, 0xe2b3, 0x703, 0xe2e0, 0x6ec, 0xe30d,
155 0x6d5, 0xe33a, 0x6bf, 0xe367, 0x6a8, 0xe394, 0x692, 0xe3c1,
156 0x67c, 0xe3ee, 0x666, 0xe41b, 0x650, 0xe448, 0x63b, 0xe476,
157 0x625, 0xe4a3, 0x610, 0xe4d0, 0x5fa, 0xe4fe, 0x5e5, 0xe52c,
158 0x5d0, 0xe559, 0x5bb, 0xe587, 0x5a7, 0xe5b5, 0x592, 0xe5e3,
159 0x57e, 0xe611, 0x569, 0xe63f, 0x555, 0xe66d, 0x541, 0xe69b,
160 0x52d, 0xe6c9, 0x51a, 0xe6f7, 0x506, 0xe725, 0x4f2, 0xe754,
161 0x4df, 0xe782, 0x4cc, 0xe7b1, 0x4b9, 0xe7df, 0x4a6, 0xe80e,
162 0x493, 0xe83c, 0x481, 0xe86b, 0x46e, 0xe89a, 0x45c, 0xe8c9,
163 0x44a, 0xe8f7, 0x438, 0xe926, 0x426, 0xe955, 0x414, 0xe984,
164 0x403, 0xe9b4, 0x3f1, 0xe9e3, 0x3e0, 0xea12, 0x3cf, 0xea41,
165 0x3be, 0xea70, 0x3ad, 0xeaa0, 0x39c, 0xeacf, 0x38c, 0xeaff,
166 0x37b, 0xeb2e, 0x36b, 0xeb5e, 0x35b, 0xeb8d, 0x34b, 0xebbd,
167 0x33b, 0xebed, 0x32b, 0xec1c, 0x31c, 0xec4c, 0x30c, 0xec7c,
168 0x2fd, 0xecac, 0x2ee, 0xecdc, 0x2df, 0xed0c, 0x2d0, 0xed3c,
169 0x2c1, 0xed6c, 0x2b3, 0xed9c, 0x2a5, 0xedcc, 0x296, 0xedfc,
170 0x288, 0xee2d, 0x27a, 0xee5d, 0x26d, 0xee8d, 0x25f, 0xeebe,
171 0x251, 0xeeee, 0x244, 0xef1f, 0x237, 0xef4f, 0x22a, 0xef80,
172 0x21d, 0xefb0, 0x210, 0xefe1, 0x204, 0xf012, 0x1f7, 0xf042,
173 0x1eb, 0xf073, 0x1df, 0xf0a4, 0x1d3, 0xf0d5, 0x1c7, 0xf105,
174 0x1bb, 0xf136, 0x1b0, 0xf167, 0x1a4, 0xf198, 0x199, 0xf1c9,
175 0x18e, 0xf1fa, 0x183, 0xf22b, 0x178, 0xf25c, 0x16e, 0xf28e,
176 0x163, 0xf2bf, 0x159, 0xf2f0, 0x14f, 0xf321, 0x145, 0xf352,
177 0x13b, 0xf384, 0x131, 0xf3b5, 0x128, 0xf3e6, 0x11e, 0xf418,
178 0x115, 0xf449, 0x10c, 0xf47b, 0x103, 0xf4ac, 0xfa, 0xf4dd,
179 0xf1, 0xf50f, 0xe9, 0xf540, 0xe0, 0xf572, 0xd8, 0xf5a4,
180 0xd0, 0xf5d5, 0xc8, 0xf607, 0xc0, 0xf639, 0xb9, 0xf66a,
181 0xb1, 0xf69c, 0xaa, 0xf6ce, 0xa3, 0xf6ff, 0x9c, 0xf731,
182 0x95, 0xf763, 0x8e, 0xf795, 0x88, 0xf7c7, 0x81, 0xf7f9,
183 0x7b, 0xf82a, 0x75, 0xf85c, 0x6f, 0xf88e, 0x69, 0xf8c0,
184 0x64, 0xf8f2, 0x5e, 0xf924, 0x59, 0xf956, 0x54, 0xf988,
185 0x4f, 0xf9ba, 0x4a, 0xf9ec, 0x45, 0xfa1e, 0x41, 0xfa50,
186 0x3c, 0xfa82, 0x38, 0xfab4, 0x34, 0xfae6, 0x30, 0xfb19,
187 0x2c, 0xfb4b, 0x29, 0xfb7d, 0x25, 0xfbaf, 0x22, 0xfbe1,
188 0x1f, 0xfc13, 0x1c, 0xfc45, 0x19, 0xfc78, 0x16, 0xfcaa,
189 0x14, 0xfcdc, 0x11, 0xfd0e, 0xf, 0xfd40, 0xd, 0xfd73,
190 0xb, 0xfda5, 0x9, 0xfdd7, 0x8, 0xfe09, 0x6, 0xfe3c,
191 0x5, 0xfe6e, 0x4, 0xfea0, 0x3, 0xfed2, 0x2, 0xff05,
192 0x1, 0xff37, 0x1, 0xff69, 0x0, 0xff9b, 0x0, 0xffce,
193 0x0, 0x0, 0x0, 0x32, 0x0, 0x65, 0x1, 0x97,
194 0x1, 0xc9, 0x2, 0xfb, 0x3, 0x12e, 0x4, 0x160,
195 0x5, 0x192, 0x6, 0x1c4, 0x8, 0x1f7, 0x9, 0x229,
196 0xb, 0x25b, 0xd, 0x28d, 0xf, 0x2c0, 0x11, 0x2f2,
197 0x14, 0x324, 0x16, 0x356, 0x19, 0x388, 0x1c, 0x3bb,
198 0x1f, 0x3ed, 0x22, 0x41f, 0x25, 0x451, 0x29, 0x483,
199 0x2c, 0x4b5, 0x30, 0x4e7, 0x34, 0x51a, 0x38, 0x54c,
200 0x3c, 0x57e, 0x41, 0x5b0, 0x45, 0x5e2, 0x4a, 0x614,
201 0x4f, 0x646, 0x54, 0x678, 0x59, 0x6aa, 0x5e, 0x6dc,
202 0x64, 0x70e, 0x69, 0x740, 0x6f, 0x772, 0x75, 0x7a4,
203 0x7b, 0x7d6, 0x81, 0x807, 0x88, 0x839, 0x8e, 0x86b,
204 0x95, 0x89d, 0x9c, 0x8cf, 0xa3, 0x901, 0xaa, 0x932,
205 0xb1, 0x964, 0xb9, 0x996, 0xc0, 0x9c7, 0xc8, 0x9f9,
206 0xd0, 0xa2b, 0xd8, 0xa5c, 0xe0, 0xa8e, 0xe9, 0xac0,
207 0xf1, 0xaf1, 0xfa, 0xb23, 0x103, 0xb54, 0x10c, 0xb85,
208 0x115, 0xbb7, 0x11e, 0xbe8, 0x128, 0xc1a, 0x131, 0xc4b,
209 0x13b, 0xc7c, 0x145, 0xcae, 0x14f, 0xcdf, 0x159, 0xd10,
210 0x163, 0xd41, 0x16e, 0xd72, 0x178, 0xda4, 0x183, 0xdd5,
211 0x18e, 0xe06, 0x199, 0xe37, 0x1a4, 0xe68, 0x1b0, 0xe99,
212 0x1bb, 0xeca, 0x1c7, 0xefb, 0x1d3, 0xf2b, 0x1df, 0xf5c,
213 0x1eb, 0xf8d, 0x1f7, 0xfbe, 0x204, 0xfee, 0x210, 0x101f,
214 0x21d, 0x1050, 0x22a, 0x1080, 0x237, 0x10b1, 0x244, 0x10e1,
215 0x251, 0x1112, 0x25f, 0x1142, 0x26d, 0x1173, 0x27a, 0x11a3,
216 0x288, 0x11d3, 0x296, 0x1204, 0x2a5, 0x1234, 0x2b3, 0x1264,
217 0x2c1, 0x1294, 0x2d0, 0x12c4, 0x2df, 0x12f4, 0x2ee, 0x1324,
218 0x2fd, 0x1354, 0x30c, 0x1384, 0x31c, 0x13b4, 0x32b, 0x13e4,
219 0x33b, 0x1413, 0x34b, 0x1443, 0x35b, 0x1473, 0x36b, 0x14a2,
220 0x37b, 0x14d2, 0x38c, 0x1501, 0x39c, 0x1531, 0x3ad, 0x1560,
221 0x3be, 0x1590, 0x3cf, 0x15bf, 0x3e0, 0x15ee, 0x3f1, 0x161d,
222 0x403, 0x164c, 0x414, 0x167c, 0x426, 0x16ab, 0x438, 0x16da,
223 0x44a, 0x1709, 0x45c, 0x1737, 0x46e, 0x1766, 0x481, 0x1795,
224 0x493, 0x17c4, 0x4a6, 0x17f2, 0x4b9, 0x1821, 0x4cc, 0x184f,
225 0x4df, 0x187e, 0x4f2, 0x18ac, 0x506, 0x18db, 0x51a, 0x1909,
226 0x52d, 0x1937, 0x541, 0x1965, 0x555, 0x1993, 0x569, 0x19c1,
227 0x57e, 0x19ef, 0x592, 0x1a1d, 0x5a7, 0x1a4b, 0x5bb, 0x1a79,
228 0x5d0, 0x1aa7, 0x5e5, 0x1ad4, 0x5fa, 0x1b02, 0x610, 0x1b30,
229 0x625, 0x1b5d, 0x63b, 0x1b8a, 0x650, 0x1bb8, 0x666, 0x1be5,
230 0x67c, 0x1c12, 0x692, 0x1c3f, 0x6a8, 0x1c6c, 0x6bf, 0x1c99,
231 0x6d5, 0x1cc6, 0x6ec, 0x1cf3, 0x703, 0x1d20, 0x71a, 0x1d4d,
232 0x731, 0x1d79, 0x748, 0x1da6, 0x75f, 0x1dd3, 0x777, 0x1dff,
233 0x78f, 0x1e2b, 0x7a6, 0x1e58, 0x7be, 0x1e84, 0x7d6, 0x1eb0,
234 0x7ee, 0x1edc, 0x807, 0x1f08, 0x81f, 0x1f34, 0x838, 0x1f60,
235 0x850, 0x1f8c, 0x869, 0x1fb7, 0x882, 0x1fe3, 0x89b, 0x200f,
236 0x8b5, 0x203a, 0x8ce, 0x2065, 0x8e8, 0x2091, 0x901, 0x20bc,
237 0x91b, 0x20e7, 0x935, 0x2112, 0x94f, 0x213d, 0x969, 0x2168,
238 0x983, 0x2193, 0x99e, 0x21be, 0x9b8, 0x21e8, 0x9d3, 0x2213,
239 0x9ee, 0x223d, 0xa09, 0x2268, 0xa24, 0x2292, 0xa3f, 0x22bc,
240 0xa5b, 0x22e7, 0xa76, 0x2311, 0xa92, 0x233b, 0xaad, 0x2365,
241 0xac9, 0x238e, 0xae5, 0x23b8, 0xb01, 0x23e2, 0xb1e, 0x240b,
242 0xb3a, 0x2435, 0xb56, 0x245e, 0xb73, 0x2488, 0xb90, 0x24b1,
243 0xbad, 0x24da, 0xbca, 0x2503, 0xbe7, 0x252c, 0xc04, 0x2555,
244 0xc21, 0x257e, 0xc3f, 0x25a6, 0xc5d, 0x25cf, 0xc7a, 0x25f8,
245 0xc98, 0x2620, 0xcb6, 0x2648, 0xcd4, 0x2671, 0xcf3, 0x2699,
246 0xd11, 0x26c1, 0xd30, 0x26e9, 0xd4e, 0x2711, 0xd6d, 0x2738,
247 0xd8c, 0x2760, 0xdab, 0x2788, 0xdca, 0x27af, 0xde9, 0x27d6,
248 0xe08, 0x27fe, 0xe28, 0x2825, 0xe47, 0x284c, 0xe67, 0x2873,
249 0xe87, 0x289a, 0xea7, 0x28c1, 0xec7, 0x28e7, 0xee7, 0x290e,
250 0xf07, 0x2935, 0xf28, 0x295b, 0xf48, 0x2981, 0xf69, 0x29a7,
251 0xf8a, 0x29ce, 0xfab, 0x29f4, 0xfcc, 0x2a1a, 0xfed, 0x2a3f,
252 0x100e, 0x2a65, 0x1030, 0x2a8b, 0x1051, 0x2ab0, 0x1073, 0x2ad6,
253 0x1094, 0x2afb, 0x10b6, 0x2b20, 0x10d8, 0x2b45, 0x10fa, 0x2b6a,
254 0x111c, 0x2b8f, 0x113e, 0x2bb4, 0x1161, 0x2bd8, 0x1183, 0x2bfd,
255 0x11a6, 0x2c21, 0x11c9, 0x2c46, 0x11eb, 0x2c6a, 0x120e, 0x2c8e,
256 0x1231, 0x2cb2, 0x1255, 0x2cd6, 0x1278, 0x2cfa, 0x129b, 0x2d1e,
257 0x12bf, 0x2d41, 0x12e2, 0x2d65, 0x1306, 0x2d88, 0x132a, 0x2dab,
258 0x134e, 0x2dcf, 0x1372, 0x2df2, 0x1396, 0x2e15, 0x13ba, 0x2e37,
259 0x13df, 0x2e5a, 0x1403, 0x2e7d, 0x1428, 0x2e9f, 0x144c, 0x2ec2,
260 0x1471, 0x2ee4, 0x1496, 0x2f06, 0x14bb, 0x2f28, 0x14e0, 0x2f4a,
261 0x1505, 0x2f6c, 0x152a, 0x2f8d, 0x1550, 0x2faf, 0x1575, 0x2fd0,
262 0x159b, 0x2ff2, 0x15c1, 0x3013, 0x15e6, 0x3034, 0x160c, 0x3055,
263 0x1632, 0x3076, 0x1659, 0x3097, 0x167f, 0x30b8, 0x16a5, 0x30d8,
264 0x16cb, 0x30f9, 0x16f2, 0x3119, 0x1719, 0x3139, 0x173f, 0x3159,
265 0x1766, 0x3179, 0x178d, 0x3199, 0x17b4, 0x31b9, 0x17db, 0x31d8,
266 0x1802, 0x31f8, 0x182a, 0x3217, 0x1851, 0x3236, 0x1878, 0x3255,
267 0x18a0, 0x3274, 0x18c8, 0x3293, 0x18ef, 0x32b2, 0x1917, 0x32d0,
268 0x193f, 0x32ef, 0x1967, 0x330d, 0x198f, 0x332c, 0x19b8, 0x334a,
269 0x19e0, 0x3368, 0x1a08, 0x3386, 0x1a31, 0x33a3, 0x1a5a, 0x33c1,
270 0x1a82, 0x33df, 0x1aab, 0x33fc, 0x1ad4, 0x3419, 0x1afd, 0x3436,
271 0x1b26, 0x3453, 0x1b4f, 0x3470, 0x1b78, 0x348d, 0x1ba2, 0x34aa,
272 0x1bcb, 0x34c6, 0x1bf5, 0x34e2, 0x1c1e, 0x34ff, 0x1c48, 0x351b,
273 0x1c72, 0x3537, 0x1c9b, 0x3553, 0x1cc5, 0x356e, 0x1cef, 0x358a,
274 0x1d19, 0x35a5, 0x1d44, 0x35c1, 0x1d6e, 0x35dc, 0x1d98, 0x35f7,
275 0x1dc3, 0x3612, 0x1ded, 0x362d, 0x1e18, 0x3648, 0x1e42, 0x3662,
276 0x1e6d, 0x367d, 0x1e98, 0x3697, 0x1ec3, 0x36b1, 0x1eee, 0x36cb,
277 0x1f19, 0x36e5, 0x1f44, 0x36ff, 0x1f6f, 0x3718, 0x1f9b, 0x3732,
278 0x1fc6, 0x374b, 0x1ff1, 0x3765, 0x201d, 0x377e, 0x2049, 0x3797,
279 0x2074, 0x37b0, 0x20a0, 0x37c8, 0x20cc, 0x37e1, 0x20f8, 0x37f9,
280 0x2124, 0x3812, 0x2150, 0x382a, 0x217c, 0x3842, 0x21a8, 0x385a,
281 0x21d5, 0x3871, 0x2201, 0x3889, 0x222d, 0x38a1, 0x225a, 0x38b8,
282 0x2287, 0x38cf, 0x22b3, 0x38e6, 0x22e0, 0x38fd, 0x230d, 0x3914,
283 0x233a, 0x392b, 0x2367, 0x3941, 0x2394, 0x3958, 0x23c1, 0x396e,
284 0x23ee, 0x3984, 0x241b, 0x399a, 0x2448, 0x39b0, 0x2476, 0x39c5,
285 0x24a3, 0x39db, 0x24d0, 0x39f0, 0x24fe, 0x3a06, 0x252c, 0x3a1b,
286 0x2559, 0x3a30, 0x2587, 0x3a45, 0x25b5, 0x3a59, 0x25e3, 0x3a6e,
287 0x2611, 0x3a82, 0x263f, 0x3a97, 0x266d, 0x3aab, 0x269b, 0x3abf,
288 0x26c9, 0x3ad3, 0x26f7, 0x3ae6, 0x2725, 0x3afa, 0x2754, 0x3b0e,
289 0x2782, 0x3b21, 0x27b1, 0x3b34, 0x27df, 0x3b47, 0x280e, 0x3b5a,
290 0x283c, 0x3b6d, 0x286b, 0x3b7f, 0x289a, 0x3b92, 0x28c9, 0x3ba4,
291 0x28f7, 0x3bb6, 0x2926, 0x3bc8, 0x2955, 0x3bda, 0x2984, 0x3bec,
292 0x29b4, 0x3bfd, 0x29e3, 0x3c0f, 0x2a12, 0x3c20, 0x2a41, 0x3c31,
293 0x2a70, 0x3c42, 0x2aa0, 0x3c53, 0x2acf, 0x3c64, 0x2aff, 0x3c74,
294 0x2b2e, 0x3c85, 0x2b5e, 0x3c95, 0x2b8d, 0x3ca5, 0x2bbd, 0x3cb5,
295 0x2bed, 0x3cc5, 0x2c1c, 0x3cd5, 0x2c4c, 0x3ce4, 0x2c7c, 0x3cf4,
296 0x2cac, 0x3d03, 0x2cdc, 0x3d12, 0x2d0c, 0x3d21, 0x2d3c, 0x3d30,
297 0x2d6c, 0x3d3f, 0x2d9c, 0x3d4d, 0x2dcc, 0x3d5b, 0x2dfc, 0x3d6a,
298 0x2e2d, 0x3d78, 0x2e5d, 0x3d86, 0x2e8d, 0x3d93, 0x2ebe, 0x3da1,
299 0x2eee, 0x3daf, 0x2f1f, 0x3dbc, 0x2f4f, 0x3dc9, 0x2f80, 0x3dd6,
300 0x2fb0, 0x3de3, 0x2fe1, 0x3df0, 0x3012, 0x3dfc, 0x3042, 0x3e09,
301 0x3073, 0x3e15, 0x30a4, 0x3e21, 0x30d5, 0x3e2d, 0x3105, 0x3e39,
302 0x3136, 0x3e45, 0x3167, 0x3e50, 0x3198, 0x3e5c, 0x31c9, 0x3e67,
303 0x31fa, 0x3e72, 0x322b, 0x3e7d, 0x325c, 0x3e88, 0x328e, 0x3e92,
304 0x32bf, 0x3e9d, 0x32f0, 0x3ea7, 0x3321, 0x3eb1, 0x3352, 0x3ebb,
305 0x3384, 0x3ec5, 0x33b5, 0x3ecf, 0x33e6, 0x3ed8, 0x3418, 0x3ee2,
306 0x3449, 0x3eeb, 0x347b, 0x3ef4, 0x34ac, 0x3efd, 0x34dd, 0x3f06,
307 0x350f, 0x3f0f, 0x3540, 0x3f17, 0x3572, 0x3f20, 0x35a4, 0x3f28,
308 0x35d5, 0x3f30, 0x3607, 0x3f38, 0x3639, 0x3f40, 0x366a, 0x3f47,
309 0x369c, 0x3f4f, 0x36ce, 0x3f56, 0x36ff, 0x3f5d, 0x3731, 0x3f64,
310 0x3763, 0x3f6b, 0x3795, 0x3f72, 0x37c7, 0x3f78, 0x37f9, 0x3f7f,
311 0x382a, 0x3f85, 0x385c, 0x3f8b, 0x388e, 0x3f91, 0x38c0, 0x3f97,
312 0x38f2, 0x3f9c, 0x3924, 0x3fa2, 0x3956, 0x3fa7, 0x3988, 0x3fac,
313 0x39ba, 0x3fb1, 0x39ec, 0x3fb6, 0x3a1e, 0x3fbb, 0x3a50, 0x3fbf,
314 0x3a82, 0x3fc4, 0x3ab4, 0x3fc8, 0x3ae6, 0x3fcc, 0x3b19, 0x3fd0,
315 0x3b4b, 0x3fd4, 0x3b7d, 0x3fd7, 0x3baf, 0x3fdb, 0x3be1, 0x3fde,
316 0x3c13, 0x3fe1, 0x3c45, 0x3fe4, 0x3c78, 0x3fe7, 0x3caa, 0x3fea,
317 0x3cdc, 0x3fec, 0x3d0e, 0x3fef, 0x3d40, 0x3ff1, 0x3d73, 0x3ff3,
318 0x3da5, 0x3ff5, 0x3dd7, 0x3ff7, 0x3e09, 0x3ff8, 0x3e3c, 0x3ffa,
319 0x3e6e, 0x3ffb, 0x3ea0, 0x3ffc, 0x3ed2, 0x3ffd, 0x3f05, 0x3ffe,
320 0x3f37, 0x3fff, 0x3f69, 0x3fff, 0x3f9b, 0x4000, 0x3fce, 0x4000
325 * Generation of real_CoefB array:
328 * <pre>for (i = 0; i < n; i++)
330 * pBTable[2 * i] = 0.5 * (1.0 + sin (2 * PI / (double) (2 * n) * (double) i));
331 * pBTable[2 * i + 1] = 0.5 * (1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
334 * Convert to fixed point Q15 format
335 * round(pBTable[i] * pow(2, 15))
339 static const q15_t realCoefBQ15[2048] = {
340 0x4000, 0x4000, 0x4032, 0x4000, 0x4065, 0x4000, 0x4097, 0x3fff,
341 0x40c9, 0x3fff, 0x40fb, 0x3ffe, 0x412e, 0x3ffd, 0x4160, 0x3ffc,
342 0x4192, 0x3ffb, 0x41c4, 0x3ffa, 0x41f7, 0x3ff8, 0x4229, 0x3ff7,
343 0x425b, 0x3ff5, 0x428d, 0x3ff3, 0x42c0, 0x3ff1, 0x42f2, 0x3fef,
344 0x4324, 0x3fec, 0x4356, 0x3fea, 0x4388, 0x3fe7, 0x43bb, 0x3fe4,
345 0x43ed, 0x3fe1, 0x441f, 0x3fde, 0x4451, 0x3fdb, 0x4483, 0x3fd7,
346 0x44b5, 0x3fd4, 0x44e7, 0x3fd0, 0x451a, 0x3fcc, 0x454c, 0x3fc8,
347 0x457e, 0x3fc4, 0x45b0, 0x3fbf, 0x45e2, 0x3fbb, 0x4614, 0x3fb6,
348 0x4646, 0x3fb1, 0x4678, 0x3fac, 0x46aa, 0x3fa7, 0x46dc, 0x3fa2,
349 0x470e, 0x3f9c, 0x4740, 0x3f97, 0x4772, 0x3f91, 0x47a4, 0x3f8b,
350 0x47d6, 0x3f85, 0x4807, 0x3f7f, 0x4839, 0x3f78, 0x486b, 0x3f72,
351 0x489d, 0x3f6b, 0x48cf, 0x3f64, 0x4901, 0x3f5d, 0x4932, 0x3f56,
352 0x4964, 0x3f4f, 0x4996, 0x3f47, 0x49c7, 0x3f40, 0x49f9, 0x3f38,
353 0x4a2b, 0x3f30, 0x4a5c, 0x3f28, 0x4a8e, 0x3f20, 0x4ac0, 0x3f17,
354 0x4af1, 0x3f0f, 0x4b23, 0x3f06, 0x4b54, 0x3efd, 0x4b85, 0x3ef4,
355 0x4bb7, 0x3eeb, 0x4be8, 0x3ee2, 0x4c1a, 0x3ed8, 0x4c4b, 0x3ecf,
356 0x4c7c, 0x3ec5, 0x4cae, 0x3ebb, 0x4cdf, 0x3eb1, 0x4d10, 0x3ea7,
357 0x4d41, 0x3e9d, 0x4d72, 0x3e92, 0x4da4, 0x3e88, 0x4dd5, 0x3e7d,
358 0x4e06, 0x3e72, 0x4e37, 0x3e67, 0x4e68, 0x3e5c, 0x4e99, 0x3e50,
359 0x4eca, 0x3e45, 0x4efb, 0x3e39, 0x4f2b, 0x3e2d, 0x4f5c, 0x3e21,
360 0x4f8d, 0x3e15, 0x4fbe, 0x3e09, 0x4fee, 0x3dfc, 0x501f, 0x3df0,
361 0x5050, 0x3de3, 0x5080, 0x3dd6, 0x50b1, 0x3dc9, 0x50e1, 0x3dbc,
362 0x5112, 0x3daf, 0x5142, 0x3da1, 0x5173, 0x3d93, 0x51a3, 0x3d86,
363 0x51d3, 0x3d78, 0x5204, 0x3d6a, 0x5234, 0x3d5b, 0x5264, 0x3d4d,
364 0x5294, 0x3d3f, 0x52c4, 0x3d30, 0x52f4, 0x3d21, 0x5324, 0x3d12,
365 0x5354, 0x3d03, 0x5384, 0x3cf4, 0x53b4, 0x3ce4, 0x53e4, 0x3cd5,
366 0x5413, 0x3cc5, 0x5443, 0x3cb5, 0x5473, 0x3ca5, 0x54a2, 0x3c95,
367 0x54d2, 0x3c85, 0x5501, 0x3c74, 0x5531, 0x3c64, 0x5560, 0x3c53,
368 0x5590, 0x3c42, 0x55bf, 0x3c31, 0x55ee, 0x3c20, 0x561d, 0x3c0f,
369 0x564c, 0x3bfd, 0x567c, 0x3bec, 0x56ab, 0x3bda, 0x56da, 0x3bc8,
370 0x5709, 0x3bb6, 0x5737, 0x3ba4, 0x5766, 0x3b92, 0x5795, 0x3b7f,
371 0x57c4, 0x3b6d, 0x57f2, 0x3b5a, 0x5821, 0x3b47, 0x584f, 0x3b34,
372 0x587e, 0x3b21, 0x58ac, 0x3b0e, 0x58db, 0x3afa, 0x5909, 0x3ae6,
373 0x5937, 0x3ad3, 0x5965, 0x3abf, 0x5993, 0x3aab, 0x59c1, 0x3a97,
374 0x59ef, 0x3a82, 0x5a1d, 0x3a6e, 0x5a4b, 0x3a59, 0x5a79, 0x3a45,
375 0x5aa7, 0x3a30, 0x5ad4, 0x3a1b, 0x5b02, 0x3a06, 0x5b30, 0x39f0,
376 0x5b5d, 0x39db, 0x5b8a, 0x39c5, 0x5bb8, 0x39b0, 0x5be5, 0x399a,
377 0x5c12, 0x3984, 0x5c3f, 0x396e, 0x5c6c, 0x3958, 0x5c99, 0x3941,
378 0x5cc6, 0x392b, 0x5cf3, 0x3914, 0x5d20, 0x38fd, 0x5d4d, 0x38e6,
379 0x5d79, 0x38cf, 0x5da6, 0x38b8, 0x5dd3, 0x38a1, 0x5dff, 0x3889,
380 0x5e2b, 0x3871, 0x5e58, 0x385a, 0x5e84, 0x3842, 0x5eb0, 0x382a,
381 0x5edc, 0x3812, 0x5f08, 0x37f9, 0x5f34, 0x37e1, 0x5f60, 0x37c8,
382 0x5f8c, 0x37b0, 0x5fb7, 0x3797, 0x5fe3, 0x377e, 0x600f, 0x3765,
383 0x603a, 0x374b, 0x6065, 0x3732, 0x6091, 0x3718, 0x60bc, 0x36ff,
384 0x60e7, 0x36e5, 0x6112, 0x36cb, 0x613d, 0x36b1, 0x6168, 0x3697,
385 0x6193, 0x367d, 0x61be, 0x3662, 0x61e8, 0x3648, 0x6213, 0x362d,
386 0x623d, 0x3612, 0x6268, 0x35f7, 0x6292, 0x35dc, 0x62bc, 0x35c1,
387 0x62e7, 0x35a5, 0x6311, 0x358a, 0x633b, 0x356e, 0x6365, 0x3553,
388 0x638e, 0x3537, 0x63b8, 0x351b, 0x63e2, 0x34ff, 0x640b, 0x34e2,
389 0x6435, 0x34c6, 0x645e, 0x34aa, 0x6488, 0x348d, 0x64b1, 0x3470,
390 0x64da, 0x3453, 0x6503, 0x3436, 0x652c, 0x3419, 0x6555, 0x33fc,
391 0x657e, 0x33df, 0x65a6, 0x33c1, 0x65cf, 0x33a3, 0x65f8, 0x3386,
392 0x6620, 0x3368, 0x6648, 0x334a, 0x6671, 0x332c, 0x6699, 0x330d,
393 0x66c1, 0x32ef, 0x66e9, 0x32d0, 0x6711, 0x32b2, 0x6738, 0x3293,
394 0x6760, 0x3274, 0x6788, 0x3255, 0x67af, 0x3236, 0x67d6, 0x3217,
395 0x67fe, 0x31f8, 0x6825, 0x31d8, 0x684c, 0x31b9, 0x6873, 0x3199,
396 0x689a, 0x3179, 0x68c1, 0x3159, 0x68e7, 0x3139, 0x690e, 0x3119,
397 0x6935, 0x30f9, 0x695b, 0x30d8, 0x6981, 0x30b8, 0x69a7, 0x3097,
398 0x69ce, 0x3076, 0x69f4, 0x3055, 0x6a1a, 0x3034, 0x6a3f, 0x3013,
399 0x6a65, 0x2ff2, 0x6a8b, 0x2fd0, 0x6ab0, 0x2faf, 0x6ad6, 0x2f8d,
400 0x6afb, 0x2f6c, 0x6b20, 0x2f4a, 0x6b45, 0x2f28, 0x6b6a, 0x2f06,
401 0x6b8f, 0x2ee4, 0x6bb4, 0x2ec2, 0x6bd8, 0x2e9f, 0x6bfd, 0x2e7d,
402 0x6c21, 0x2e5a, 0x6c46, 0x2e37, 0x6c6a, 0x2e15, 0x6c8e, 0x2df2,
403 0x6cb2, 0x2dcf, 0x6cd6, 0x2dab, 0x6cfa, 0x2d88, 0x6d1e, 0x2d65,
404 0x6d41, 0x2d41, 0x6d65, 0x2d1e, 0x6d88, 0x2cfa, 0x6dab, 0x2cd6,
405 0x6dcf, 0x2cb2, 0x6df2, 0x2c8e, 0x6e15, 0x2c6a, 0x6e37, 0x2c46,
406 0x6e5a, 0x2c21, 0x6e7d, 0x2bfd, 0x6e9f, 0x2bd8, 0x6ec2, 0x2bb4,
407 0x6ee4, 0x2b8f, 0x6f06, 0x2b6a, 0x6f28, 0x2b45, 0x6f4a, 0x2b20,
408 0x6f6c, 0x2afb, 0x6f8d, 0x2ad6, 0x6faf, 0x2ab0, 0x6fd0, 0x2a8b,
409 0x6ff2, 0x2a65, 0x7013, 0x2a3f, 0x7034, 0x2a1a, 0x7055, 0x29f4,
410 0x7076, 0x29ce, 0x7097, 0x29a7, 0x70b8, 0x2981, 0x70d8, 0x295b,
411 0x70f9, 0x2935, 0x7119, 0x290e, 0x7139, 0x28e7, 0x7159, 0x28c1,
412 0x7179, 0x289a, 0x7199, 0x2873, 0x71b9, 0x284c, 0x71d8, 0x2825,
413 0x71f8, 0x27fe, 0x7217, 0x27d6, 0x7236, 0x27af, 0x7255, 0x2788,
414 0x7274, 0x2760, 0x7293, 0x2738, 0x72b2, 0x2711, 0x72d0, 0x26e9,
415 0x72ef, 0x26c1, 0x730d, 0x2699, 0x732c, 0x2671, 0x734a, 0x2648,
416 0x7368, 0x2620, 0x7386, 0x25f8, 0x73a3, 0x25cf, 0x73c1, 0x25a6,
417 0x73df, 0x257e, 0x73fc, 0x2555, 0x7419, 0x252c, 0x7436, 0x2503,
418 0x7453, 0x24da, 0x7470, 0x24b1, 0x748d, 0x2488, 0x74aa, 0x245e,
419 0x74c6, 0x2435, 0x74e2, 0x240b, 0x74ff, 0x23e2, 0x751b, 0x23b8,
420 0x7537, 0x238e, 0x7553, 0x2365, 0x756e, 0x233b, 0x758a, 0x2311,
421 0x75a5, 0x22e7, 0x75c1, 0x22bc, 0x75dc, 0x2292, 0x75f7, 0x2268,
422 0x7612, 0x223d, 0x762d, 0x2213, 0x7648, 0x21e8, 0x7662, 0x21be,
423 0x767d, 0x2193, 0x7697, 0x2168, 0x76b1, 0x213d, 0x76cb, 0x2112,
424 0x76e5, 0x20e7, 0x76ff, 0x20bc, 0x7718, 0x2091, 0x7732, 0x2065,
425 0x774b, 0x203a, 0x7765, 0x200f, 0x777e, 0x1fe3, 0x7797, 0x1fb7,
426 0x77b0, 0x1f8c, 0x77c8, 0x1f60, 0x77e1, 0x1f34, 0x77f9, 0x1f08,
427 0x7812, 0x1edc, 0x782a, 0x1eb0, 0x7842, 0x1e84, 0x785a, 0x1e58,
428 0x7871, 0x1e2b, 0x7889, 0x1dff, 0x78a1, 0x1dd3, 0x78b8, 0x1da6,
429 0x78cf, 0x1d79, 0x78e6, 0x1d4d, 0x78fd, 0x1d20, 0x7914, 0x1cf3,
430 0x792b, 0x1cc6, 0x7941, 0x1c99, 0x7958, 0x1c6c, 0x796e, 0x1c3f,
431 0x7984, 0x1c12, 0x799a, 0x1be5, 0x79b0, 0x1bb8, 0x79c5, 0x1b8a,
432 0x79db, 0x1b5d, 0x79f0, 0x1b30, 0x7a06, 0x1b02, 0x7a1b, 0x1ad4,
433 0x7a30, 0x1aa7, 0x7a45, 0x1a79, 0x7a59, 0x1a4b, 0x7a6e, 0x1a1d,
434 0x7a82, 0x19ef, 0x7a97, 0x19c1, 0x7aab, 0x1993, 0x7abf, 0x1965,
435 0x7ad3, 0x1937, 0x7ae6, 0x1909, 0x7afa, 0x18db, 0x7b0e, 0x18ac,
436 0x7b21, 0x187e, 0x7b34, 0x184f, 0x7b47, 0x1821, 0x7b5a, 0x17f2,
437 0x7b6d, 0x17c4, 0x7b7f, 0x1795, 0x7b92, 0x1766, 0x7ba4, 0x1737,
438 0x7bb6, 0x1709, 0x7bc8, 0x16da, 0x7bda, 0x16ab, 0x7bec, 0x167c,
439 0x7bfd, 0x164c, 0x7c0f, 0x161d, 0x7c20, 0x15ee, 0x7c31, 0x15bf,
440 0x7c42, 0x1590, 0x7c53, 0x1560, 0x7c64, 0x1531, 0x7c74, 0x1501,
441 0x7c85, 0x14d2, 0x7c95, 0x14a2, 0x7ca5, 0x1473, 0x7cb5, 0x1443,
442 0x7cc5, 0x1413, 0x7cd5, 0x13e4, 0x7ce4, 0x13b4, 0x7cf4, 0x1384,
443 0x7d03, 0x1354, 0x7d12, 0x1324, 0x7d21, 0x12f4, 0x7d30, 0x12c4,
444 0x7d3f, 0x1294, 0x7d4d, 0x1264, 0x7d5b, 0x1234, 0x7d6a, 0x1204,
445 0x7d78, 0x11d3, 0x7d86, 0x11a3, 0x7d93, 0x1173, 0x7da1, 0x1142,
446 0x7daf, 0x1112, 0x7dbc, 0x10e1, 0x7dc9, 0x10b1, 0x7dd6, 0x1080,
447 0x7de3, 0x1050, 0x7df0, 0x101f, 0x7dfc, 0xfee, 0x7e09, 0xfbe,
448 0x7e15, 0xf8d, 0x7e21, 0xf5c, 0x7e2d, 0xf2b, 0x7e39, 0xefb,
449 0x7e45, 0xeca, 0x7e50, 0xe99, 0x7e5c, 0xe68, 0x7e67, 0xe37,
450 0x7e72, 0xe06, 0x7e7d, 0xdd5, 0x7e88, 0xda4, 0x7e92, 0xd72,
451 0x7e9d, 0xd41, 0x7ea7, 0xd10, 0x7eb1, 0xcdf, 0x7ebb, 0xcae,
452 0x7ec5, 0xc7c, 0x7ecf, 0xc4b, 0x7ed8, 0xc1a, 0x7ee2, 0xbe8,
453 0x7eeb, 0xbb7, 0x7ef4, 0xb85, 0x7efd, 0xb54, 0x7f06, 0xb23,
454 0x7f0f, 0xaf1, 0x7f17, 0xac0, 0x7f20, 0xa8e, 0x7f28, 0xa5c,
455 0x7f30, 0xa2b, 0x7f38, 0x9f9, 0x7f40, 0x9c7, 0x7f47, 0x996,
456 0x7f4f, 0x964, 0x7f56, 0x932, 0x7f5d, 0x901, 0x7f64, 0x8cf,
457 0x7f6b, 0x89d, 0x7f72, 0x86b, 0x7f78, 0x839, 0x7f7f, 0x807,
458 0x7f85, 0x7d6, 0x7f8b, 0x7a4, 0x7f91, 0x772, 0x7f97, 0x740,
459 0x7f9c, 0x70e, 0x7fa2, 0x6dc, 0x7fa7, 0x6aa, 0x7fac, 0x678,
460 0x7fb1, 0x646, 0x7fb6, 0x614, 0x7fbb, 0x5e2, 0x7fbf, 0x5b0,
461 0x7fc4, 0x57e, 0x7fc8, 0x54c, 0x7fcc, 0x51a, 0x7fd0, 0x4e7,
462 0x7fd4, 0x4b5, 0x7fd7, 0x483, 0x7fdb, 0x451, 0x7fde, 0x41f,
463 0x7fe1, 0x3ed, 0x7fe4, 0x3bb, 0x7fe7, 0x388, 0x7fea, 0x356,
464 0x7fec, 0x324, 0x7fef, 0x2f2, 0x7ff1, 0x2c0, 0x7ff3, 0x28d,
465 0x7ff5, 0x25b, 0x7ff7, 0x229, 0x7ff8, 0x1f7, 0x7ffa, 0x1c4,
466 0x7ffb, 0x192, 0x7ffc, 0x160, 0x7ffd, 0x12e, 0x7ffe, 0xfb,
467 0x7fff, 0xc9, 0x7fff, 0x97, 0x7fff, 0x65, 0x7fff, 0x32,
468 0x7fff, 0x0, 0x7fff, 0xffce, 0x7fff, 0xff9b, 0x7fff, 0xff69,
469 0x7fff, 0xff37, 0x7ffe, 0xff05, 0x7ffd, 0xfed2, 0x7ffc, 0xfea0,
470 0x7ffb, 0xfe6e, 0x7ffa, 0xfe3c, 0x7ff8, 0xfe09, 0x7ff7, 0xfdd7,
471 0x7ff5, 0xfda5, 0x7ff3, 0xfd73, 0x7ff1, 0xfd40, 0x7fef, 0xfd0e,
472 0x7fec, 0xfcdc, 0x7fea, 0xfcaa, 0x7fe7, 0xfc78, 0x7fe4, 0xfc45,
473 0x7fe1, 0xfc13, 0x7fde, 0xfbe1, 0x7fdb, 0xfbaf, 0x7fd7, 0xfb7d,
474 0x7fd4, 0xfb4b, 0x7fd0, 0xfb19, 0x7fcc, 0xfae6, 0x7fc8, 0xfab4,
475 0x7fc4, 0xfa82, 0x7fbf, 0xfa50, 0x7fbb, 0xfa1e, 0x7fb6, 0xf9ec,
476 0x7fb1, 0xf9ba, 0x7fac, 0xf988, 0x7fa7, 0xf956, 0x7fa2, 0xf924,
477 0x7f9c, 0xf8f2, 0x7f97, 0xf8c0, 0x7f91, 0xf88e, 0x7f8b, 0xf85c,
478 0x7f85, 0xf82a, 0x7f7f, 0xf7f9, 0x7f78, 0xf7c7, 0x7f72, 0xf795,
479 0x7f6b, 0xf763, 0x7f64, 0xf731, 0x7f5d, 0xf6ff, 0x7f56, 0xf6ce,
480 0x7f4f, 0xf69c, 0x7f47, 0xf66a, 0x7f40, 0xf639, 0x7f38, 0xf607,
481 0x7f30, 0xf5d5, 0x7f28, 0xf5a4, 0x7f20, 0xf572, 0x7f17, 0xf540,
482 0x7f0f, 0xf50f, 0x7f06, 0xf4dd, 0x7efd, 0xf4ac, 0x7ef4, 0xf47b,
483 0x7eeb, 0xf449, 0x7ee2, 0xf418, 0x7ed8, 0xf3e6, 0x7ecf, 0xf3b5,
484 0x7ec5, 0xf384, 0x7ebb, 0xf352, 0x7eb1, 0xf321, 0x7ea7, 0xf2f0,
485 0x7e9d, 0xf2bf, 0x7e92, 0xf28e, 0x7e88, 0xf25c, 0x7e7d, 0xf22b,
486 0x7e72, 0xf1fa, 0x7e67, 0xf1c9, 0x7e5c, 0xf198, 0x7e50, 0xf167,
487 0x7e45, 0xf136, 0x7e39, 0xf105, 0x7e2d, 0xf0d5, 0x7e21, 0xf0a4,
488 0x7e15, 0xf073, 0x7e09, 0xf042, 0x7dfc, 0xf012, 0x7df0, 0xefe1,
489 0x7de3, 0xefb0, 0x7dd6, 0xef80, 0x7dc9, 0xef4f, 0x7dbc, 0xef1f,
490 0x7daf, 0xeeee, 0x7da1, 0xeebe, 0x7d93, 0xee8d, 0x7d86, 0xee5d,
491 0x7d78, 0xee2d, 0x7d6a, 0xedfc, 0x7d5b, 0xedcc, 0x7d4d, 0xed9c,
492 0x7d3f, 0xed6c, 0x7d30, 0xed3c, 0x7d21, 0xed0c, 0x7d12, 0xecdc,
493 0x7d03, 0xecac, 0x7cf4, 0xec7c, 0x7ce4, 0xec4c, 0x7cd5, 0xec1c,
494 0x7cc5, 0xebed, 0x7cb5, 0xebbd, 0x7ca5, 0xeb8d, 0x7c95, 0xeb5e,
495 0x7c85, 0xeb2e, 0x7c74, 0xeaff, 0x7c64, 0xeacf, 0x7c53, 0xeaa0,
496 0x7c42, 0xea70, 0x7c31, 0xea41, 0x7c20, 0xea12, 0x7c0f, 0xe9e3,
497 0x7bfd, 0xe9b4, 0x7bec, 0xe984, 0x7bda, 0xe955, 0x7bc8, 0xe926,
498 0x7bb6, 0xe8f7, 0x7ba4, 0xe8c9, 0x7b92, 0xe89a, 0x7b7f, 0xe86b,
499 0x7b6d, 0xe83c, 0x7b5a, 0xe80e, 0x7b47, 0xe7df, 0x7b34, 0xe7b1,
500 0x7b21, 0xe782, 0x7b0e, 0xe754, 0x7afa, 0xe725, 0x7ae6, 0xe6f7,
501 0x7ad3, 0xe6c9, 0x7abf, 0xe69b, 0x7aab, 0xe66d, 0x7a97, 0xe63f,
502 0x7a82, 0xe611, 0x7a6e, 0xe5e3, 0x7a59, 0xe5b5, 0x7a45, 0xe587,
503 0x7a30, 0xe559, 0x7a1b, 0xe52c, 0x7a06, 0xe4fe, 0x79f0, 0xe4d0,
504 0x79db, 0xe4a3, 0x79c5, 0xe476, 0x79b0, 0xe448, 0x799a, 0xe41b,
505 0x7984, 0xe3ee, 0x796e, 0xe3c1, 0x7958, 0xe394, 0x7941, 0xe367,
506 0x792b, 0xe33a, 0x7914, 0xe30d, 0x78fd, 0xe2e0, 0x78e6, 0xe2b3,
507 0x78cf, 0xe287, 0x78b8, 0xe25a, 0x78a1, 0xe22d, 0x7889, 0xe201,
508 0x7871, 0xe1d5, 0x785a, 0xe1a8, 0x7842, 0xe17c, 0x782a, 0xe150,
509 0x7812, 0xe124, 0x77f9, 0xe0f8, 0x77e1, 0xe0cc, 0x77c8, 0xe0a0,
510 0x77b0, 0xe074, 0x7797, 0xe049, 0x777e, 0xe01d, 0x7765, 0xdff1,
511 0x774b, 0xdfc6, 0x7732, 0xdf9b, 0x7718, 0xdf6f, 0x76ff, 0xdf44,
512 0x76e5, 0xdf19, 0x76cb, 0xdeee, 0x76b1, 0xdec3, 0x7697, 0xde98,
513 0x767d, 0xde6d, 0x7662, 0xde42, 0x7648, 0xde18, 0x762d, 0xdded,
514 0x7612, 0xddc3, 0x75f7, 0xdd98, 0x75dc, 0xdd6e, 0x75c1, 0xdd44,
515 0x75a5, 0xdd19, 0x758a, 0xdcef, 0x756e, 0xdcc5, 0x7553, 0xdc9b,
516 0x7537, 0xdc72, 0x751b, 0xdc48, 0x74ff, 0xdc1e, 0x74e2, 0xdbf5,
517 0x74c6, 0xdbcb, 0x74aa, 0xdba2, 0x748d, 0xdb78, 0x7470, 0xdb4f,
518 0x7453, 0xdb26, 0x7436, 0xdafd, 0x7419, 0xdad4, 0x73fc, 0xdaab,
519 0x73df, 0xda82, 0x73c1, 0xda5a, 0x73a3, 0xda31, 0x7386, 0xda08,
520 0x7368, 0xd9e0, 0x734a, 0xd9b8, 0x732c, 0xd98f, 0x730d, 0xd967,
521 0x72ef, 0xd93f, 0x72d0, 0xd917, 0x72b2, 0xd8ef, 0x7293, 0xd8c8,
522 0x7274, 0xd8a0, 0x7255, 0xd878, 0x7236, 0xd851, 0x7217, 0xd82a,
523 0x71f8, 0xd802, 0x71d8, 0xd7db, 0x71b9, 0xd7b4, 0x7199, 0xd78d,
524 0x7179, 0xd766, 0x7159, 0xd73f, 0x7139, 0xd719, 0x7119, 0xd6f2,
525 0x70f9, 0xd6cb, 0x70d8, 0xd6a5, 0x70b8, 0xd67f, 0x7097, 0xd659,
526 0x7076, 0xd632, 0x7055, 0xd60c, 0x7034, 0xd5e6, 0x7013, 0xd5c1,
527 0x6ff2, 0xd59b, 0x6fd0, 0xd575, 0x6faf, 0xd550, 0x6f8d, 0xd52a,
528 0x6f6c, 0xd505, 0x6f4a, 0xd4e0, 0x6f28, 0xd4bb, 0x6f06, 0xd496,
529 0x6ee4, 0xd471, 0x6ec2, 0xd44c, 0x6e9f, 0xd428, 0x6e7d, 0xd403,
530 0x6e5a, 0xd3df, 0x6e37, 0xd3ba, 0x6e15, 0xd396, 0x6df2, 0xd372,
531 0x6dcf, 0xd34e, 0x6dab, 0xd32a, 0x6d88, 0xd306, 0x6d65, 0xd2e2,
532 0x6d41, 0xd2bf, 0x6d1e, 0xd29b, 0x6cfa, 0xd278, 0x6cd6, 0xd255,
533 0x6cb2, 0xd231, 0x6c8e, 0xd20e, 0x6c6a, 0xd1eb, 0x6c46, 0xd1c9,
534 0x6c21, 0xd1a6, 0x6bfd, 0xd183, 0x6bd8, 0xd161, 0x6bb4, 0xd13e,
535 0x6b8f, 0xd11c, 0x6b6a, 0xd0fa, 0x6b45, 0xd0d8, 0x6b20, 0xd0b6,
536 0x6afb, 0xd094, 0x6ad6, 0xd073, 0x6ab0, 0xd051, 0x6a8b, 0xd030,
537 0x6a65, 0xd00e, 0x6a3f, 0xcfed, 0x6a1a, 0xcfcc, 0x69f4, 0xcfab,
538 0x69ce, 0xcf8a, 0x69a7, 0xcf69, 0x6981, 0xcf48, 0x695b, 0xcf28,
539 0x6935, 0xcf07, 0x690e, 0xcee7, 0x68e7, 0xcec7, 0x68c1, 0xcea7,
540 0x689a, 0xce87, 0x6873, 0xce67, 0x684c, 0xce47, 0x6825, 0xce28,
541 0x67fe, 0xce08, 0x67d6, 0xcde9, 0x67af, 0xcdca, 0x6788, 0xcdab,
542 0x6760, 0xcd8c, 0x6738, 0xcd6d, 0x6711, 0xcd4e, 0x66e9, 0xcd30,
543 0x66c1, 0xcd11, 0x6699, 0xccf3, 0x6671, 0xccd4, 0x6648, 0xccb6,
544 0x6620, 0xcc98, 0x65f8, 0xcc7a, 0x65cf, 0xcc5d, 0x65a6, 0xcc3f,
545 0x657e, 0xcc21, 0x6555, 0xcc04, 0x652c, 0xcbe7, 0x6503, 0xcbca,
546 0x64da, 0xcbad, 0x64b1, 0xcb90, 0x6488, 0xcb73, 0x645e, 0xcb56,
547 0x6435, 0xcb3a, 0x640b, 0xcb1e, 0x63e2, 0xcb01, 0x63b8, 0xcae5,
548 0x638e, 0xcac9, 0x6365, 0xcaad, 0x633b, 0xca92, 0x6311, 0xca76,
549 0x62e7, 0xca5b, 0x62bc, 0xca3f, 0x6292, 0xca24, 0x6268, 0xca09,
550 0x623d, 0xc9ee, 0x6213, 0xc9d3, 0x61e8, 0xc9b8, 0x61be, 0xc99e,
551 0x6193, 0xc983, 0x6168, 0xc969, 0x613d, 0xc94f, 0x6112, 0xc935,
552 0x60e7, 0xc91b, 0x60bc, 0xc901, 0x6091, 0xc8e8, 0x6065, 0xc8ce,
553 0x603a, 0xc8b5, 0x600f, 0xc89b, 0x5fe3, 0xc882, 0x5fb7, 0xc869,
554 0x5f8c, 0xc850, 0x5f60, 0xc838, 0x5f34, 0xc81f, 0x5f08, 0xc807,
555 0x5edc, 0xc7ee, 0x5eb0, 0xc7d6, 0x5e84, 0xc7be, 0x5e58, 0xc7a6,
556 0x5e2b, 0xc78f, 0x5dff, 0xc777, 0x5dd3, 0xc75f, 0x5da6, 0xc748,
557 0x5d79, 0xc731, 0x5d4d, 0xc71a, 0x5d20, 0xc703, 0x5cf3, 0xc6ec,
558 0x5cc6, 0xc6d5, 0x5c99, 0xc6bf, 0x5c6c, 0xc6a8, 0x5c3f, 0xc692,
559 0x5c12, 0xc67c, 0x5be5, 0xc666, 0x5bb8, 0xc650, 0x5b8a, 0xc63b,
560 0x5b5d, 0xc625, 0x5b30, 0xc610, 0x5b02, 0xc5fa, 0x5ad4, 0xc5e5,
561 0x5aa7, 0xc5d0, 0x5a79, 0xc5bb, 0x5a4b, 0xc5a7, 0x5a1d, 0xc592,
562 0x59ef, 0xc57e, 0x59c1, 0xc569, 0x5993, 0xc555, 0x5965, 0xc541,
563 0x5937, 0xc52d, 0x5909, 0xc51a, 0x58db, 0xc506, 0x58ac, 0xc4f2,
564 0x587e, 0xc4df, 0x584f, 0xc4cc, 0x5821, 0xc4b9, 0x57f2, 0xc4a6,
565 0x57c4, 0xc493, 0x5795, 0xc481, 0x5766, 0xc46e, 0x5737, 0xc45c,
566 0x5709, 0xc44a, 0x56da, 0xc438, 0x56ab, 0xc426, 0x567c, 0xc414,
567 0x564c, 0xc403, 0x561d, 0xc3f1, 0x55ee, 0xc3e0, 0x55bf, 0xc3cf,
568 0x5590, 0xc3be, 0x5560, 0xc3ad, 0x5531, 0xc39c, 0x5501, 0xc38c,
569 0x54d2, 0xc37b, 0x54a2, 0xc36b, 0x5473, 0xc35b, 0x5443, 0xc34b,
570 0x5413, 0xc33b, 0x53e4, 0xc32b, 0x53b4, 0xc31c, 0x5384, 0xc30c,
571 0x5354, 0xc2fd, 0x5324, 0xc2ee, 0x52f4, 0xc2df, 0x52c4, 0xc2d0,
572 0x5294, 0xc2c1, 0x5264, 0xc2b3, 0x5234, 0xc2a5, 0x5204, 0xc296,
573 0x51d3, 0xc288, 0x51a3, 0xc27a, 0x5173, 0xc26d, 0x5142, 0xc25f,
574 0x5112, 0xc251, 0x50e1, 0xc244, 0x50b1, 0xc237, 0x5080, 0xc22a,
575 0x5050, 0xc21d, 0x501f, 0xc210, 0x4fee, 0xc204, 0x4fbe, 0xc1f7,
576 0x4f8d, 0xc1eb, 0x4f5c, 0xc1df, 0x4f2b, 0xc1d3, 0x4efb, 0xc1c7,
577 0x4eca, 0xc1bb, 0x4e99, 0xc1b0, 0x4e68, 0xc1a4, 0x4e37, 0xc199,
578 0x4e06, 0xc18e, 0x4dd5, 0xc183, 0x4da4, 0xc178, 0x4d72, 0xc16e,
579 0x4d41, 0xc163, 0x4d10, 0xc159, 0x4cdf, 0xc14f, 0x4cae, 0xc145,
580 0x4c7c, 0xc13b, 0x4c4b, 0xc131, 0x4c1a, 0xc128, 0x4be8, 0xc11e,
581 0x4bb7, 0xc115, 0x4b85, 0xc10c, 0x4b54, 0xc103, 0x4b23, 0xc0fa,
582 0x4af1, 0xc0f1, 0x4ac0, 0xc0e9, 0x4a8e, 0xc0e0, 0x4a5c, 0xc0d8,
583 0x4a2b, 0xc0d0, 0x49f9, 0xc0c8, 0x49c7, 0xc0c0, 0x4996, 0xc0b9,
584 0x4964, 0xc0b1, 0x4932, 0xc0aa, 0x4901, 0xc0a3, 0x48cf, 0xc09c,
585 0x489d, 0xc095, 0x486b, 0xc08e, 0x4839, 0xc088, 0x4807, 0xc081,
586 0x47d6, 0xc07b, 0x47a4, 0xc075, 0x4772, 0xc06f, 0x4740, 0xc069,
587 0x470e, 0xc064, 0x46dc, 0xc05e, 0x46aa, 0xc059, 0x4678, 0xc054,
588 0x4646, 0xc04f, 0x4614, 0xc04a, 0x45e2, 0xc045, 0x45b0, 0xc041,
589 0x457e, 0xc03c, 0x454c, 0xc038, 0x451a, 0xc034, 0x44e7, 0xc030,
590 0x44b5, 0xc02c, 0x4483, 0xc029, 0x4451, 0xc025, 0x441f, 0xc022,
591 0x43ed, 0xc01f, 0x43bb, 0xc01c, 0x4388, 0xc019, 0x4356, 0xc016,
592 0x4324, 0xc014, 0x42f2, 0xc011, 0x42c0, 0xc00f, 0x428d, 0xc00d,
593 0x425b, 0xc00b, 0x4229, 0xc009, 0x41f7, 0xc008, 0x41c4, 0xc006,
594 0x4192, 0xc005, 0x4160, 0xc004, 0x412e, 0xc003, 0x40fb, 0xc002,
595 0x40c9, 0xc001, 0x4097, 0xc001, 0x4065, 0xc000, 0x4032, 0xc000
599 * @brief Initialization function for the Q15 RFFT/RIFFT.
600 * @param[in, out] *S points to an instance of the Q15 RFFT/RIFFT structure.
601 * @param[in] *S_CFFT points to an instance of the Q15 CFFT/CIFFT structure.
602 * @param[in] fftLenReal length of the FFT.
603 * @param[in] ifftFlagR flag that selects forward (ifftFlagR=0) or inverse (ifftFlagR=1) transform.
604 * @param[in] bitReverseFlag flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output.
605 * @return The function returns ARM_MATH_SUCCESS if initialization is successful or ARM_MATH_ARGUMENT_ERROR if <code>fftLenReal</code> is not a supported value.
609 * The parameter <code>fftLenReal</code> Specifies length of RFFT/RIFFT Process. Supported FFT Lengths are 128, 512, 2048.
611 * The parameter <code>ifftFlagR</code> controls whether a forward or inverse transform is computed.
612 * Set(=1) ifftFlagR to calculate RIFFT, otherwise RFFT is calculated.
614 * The parameter <code>bitReverseFlag</code> controls whether output is in normal order or bit reversed order.
615 * Set(=1) bitReverseFlag for output to be in normal order otherwise output is in bit reversed order.
617 * This function also initializes Twiddle factor table.
620 arm_status arm_rfft_init_q15(
621 arm_rfft_instance_q15 * S,
622 arm_cfft_radix4_instance_q15 * S_CFFT,
625 uint32_t bitReverseFlag)
628 /* Initialise the default arm status */
629 arm_status status = ARM_MATH_SUCCESS;
631 /* Initialize the Real FFT length */
632 S->fftLenReal = (uint16_t) fftLenReal;
634 /* Initialize the Complex FFT length */
635 S->fftLenBy2 = (uint16_t) fftLenReal / 2u;
637 /* Initialize the Twiddle coefficientA pointer */
638 S->pTwiddleAReal = (q15_t *) realCoefAQ15;
640 /* Initialize the Twiddle coefficientB pointer */
641 S->pTwiddleBReal = (q15_t *) realCoefBQ15;
643 /* Initialize the Flag for selection of RFFT or RIFFT */
644 S->ifftFlagR = (uint8_t) ifftFlagR;
646 /* Initialize the Flag for calculation Bit reversal or not */
647 S->bitReverseFlagR = (uint8_t) bitReverseFlag;
649 /* Initialization of coef modifier depending on the FFT length */
650 switch (S->fftLenReal)
653 S->twidCoefRModifier = 1u;
656 S->twidCoefRModifier = 4u;
659 S->twidCoefRModifier = 16u;
662 /* Reporting argument error if rfftSize is not valid value */
663 status = ARM_MATH_ARGUMENT_ERROR;
667 /* Init Complex FFT Instance */
672 /* Initializes the CIFFT Module for fftLenreal/2 length */
673 arm_cfft_radix4_init_q15(S->pCfft, S->fftLenBy2, 1u, 1u);
677 /* Initializes the CFFT Module for fftLenreal/2 length */
678 arm_cfft_radix4_init_q15(S->pCfft, S->fftLenBy2, 0u, 1u);
681 /* return the status of RFFT Init function */
687 * @} end of RFFT_RIFFT group
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