k60-keil

K60-Keil版本（下载安装MDK4.23）

/* ----------------------------------------------------------------------   
* Copyright (C) 2010 ARM Limited. All rights reserved.   
*   
* $Date:        15. July 2011  
* $Revision: 	V1.0.10  
*   
* Project: 	    CMSIS DSP Library   
* Title:	    arm_cfft_radix4_init_q31.c   
*   
* Description:	Radix-4 Decimation in Frequency Q31 FFT & IFFT initialization function   
*   
* Target Processor: Cortex-M4/Cortex-M3/Cortex-M0
*  
* Version 1.0.10 2011/7/15 
*    Big Endian support added and Merged M0 and M3/M4 Source code.  
*   
* Version 1.0.3 2010/11/29  
*    Re-organized the CMSIS folders and updated documentation.   
*    
* Version 1.0.2 2010/11/11   
*    Documentation updated.    
*   
* Version 1.0.1 2010/10/05    
*    Production release and review comments incorporated.   
*   
* Version 1.0.0 2010/09/20    
*    Production release and review comments incorporated.   
*   
* Version 0.0.5  2010/04/26    
* 	 incorporated review comments and updated with latest CMSIS layer   
*   
* Version 0.0.3  2010/03/10    
*    Initial version   
* -------------------------------------------------------------------- */

#include "arm_math.h"
#include "arm_common_tables.h"

/**   
 * @ingroup groupTransforms   
 */

/**   
 * @addtogroup CFFT_CIFFT   
 * @{   
 */

/*   
* @brief  Twiddle factors Table   
*/

/**   
* \par  
* Example code for Q31 Twiddle factors Generation::   
* \par   
* <pre>for(i = 0; i< N; i++)   
* {   
*    twiddleCoefQ31[2*i]= cos(i * 2*PI/(float)N);   
*    twiddleCoefQ31[2*i+1]= sin(i * 2*PI/(float)N);   
* } </pre>   
* \par   
* where N = 1024	and PI = 3.14159265358979   
* \par   
* Cos and Sin values are interleaved fashion   
* \par   
* Convert Floating point to Q31(Fixed point 1.31):   
*	round(twiddleCoefQ31(i) * pow(2, 31))   
*   
*/

static const q31_t twiddleCoefQ31[2048] = {
  0x7fffffff, 0x0, 0x7fff6216, 0xc90f88, 0x7ffd885a, 0x1921d20, 0x7ffa72d1,
  0x25b26d7,
  0x7ff62182, 0x3242abf, 0x7ff09478, 0x3ed26e6, 0x7fe9cbc0, 0x4b6195d,
  0x7fe1c76b, 0x57f0035,
  0x7fd8878e, 0x647d97c, 0x7fce0c3e, 0x710a345, 0x7fc25596, 0x7d95b9e,
  0x7fb563b3, 0x8a2009a,
  0x7fa736b4, 0x96a9049, 0x7f97cebd, 0xa3308bd, 0x7f872bf3, 0xafb6805,
  0x7f754e80, 0xbc3ac35,
  0x7f62368f, 0xc8bd35e, 0x7f4de451, 0xd53db92, 0x7f3857f6, 0xe1bc2e4,
  0x7f2191b4, 0xee38766,
  0x7f0991c4, 0xfab272b, 0x7ef05860, 0x1072a048, 0x7ed5e5c6, 0x1139f0cf,
  0x7eba3a39, 0x120116d5,
  0x7e9d55fc, 0x12c8106f, 0x7e7f3957, 0x138edbb1, 0x7e5fe493, 0x145576b1,
  0x7e3f57ff, 0x151bdf86,
  0x7e1d93ea, 0x15e21445, 0x7dfa98a8, 0x16a81305, 0x7dd6668f, 0x176dd9de,
  0x7db0fdf8, 0x183366e9,
  0x7d8a5f40, 0x18f8b83c, 0x7d628ac6, 0x19bdcbf3, 0x7d3980ec, 0x1a82a026,
  0x7d0f4218, 0x1b4732ef,
  0x7ce3ceb2, 0x1c0b826a, 0x7cb72724, 0x1ccf8cb3, 0x7c894bde, 0x1d934fe5,
  0x7c5a3d50, 0x1e56ca1e,
  0x7c29fbee, 0x1f19f97b, 0x7bf88830, 0x1fdcdc1b, 0x7bc5e290, 0x209f701c,
  0x7b920b89, 0x2161b3a0,
  0x7b5d039e, 0x2223a4c5, 0x7b26cb4f, 0x22e541af, 0x7aef6323, 0x23a6887f,
  0x7ab6cba4, 0x24677758,
  0x7a7d055b, 0x25280c5e, 0x7a4210d8, 0x25e845b6, 0x7a05eead, 0x26a82186,
  0x79c89f6e, 0x27679df4,
  0x798a23b1, 0x2826b928, 0x794a7c12, 0x28e5714b, 0x7909a92d, 0x29a3c485,
  0x78c7aba2, 0x2a61b101,
  0x78848414, 0x2b1f34eb, 0x78403329, 0x2bdc4e6f, 0x77fab989, 0x2c98fbba,
  0x77b417df, 0x2d553afc,
  0x776c4edb, 0x2e110a62, 0x77235f2d, 0x2ecc681e, 0x76d94989, 0x2f875262,
  0x768e0ea6, 0x3041c761,
  0x7641af3d, 0x30fbc54d, 0x75f42c0b, 0x31b54a5e, 0x75a585cf, 0x326e54c7,
  0x7555bd4c, 0x3326e2c3,
  0x7504d345, 0x33def287, 0x74b2c884, 0x34968250, 0x745f9dd1, 0x354d9057,
  0x740b53fb, 0x36041ad9,
  0x73b5ebd1, 0x36ba2014, 0x735f6626, 0x376f9e46, 0x7307c3d0, 0x382493b0,
  0x72af05a7, 0x38d8fe93,
  0x72552c85, 0x398cdd32, 0x71fa3949, 0x3a402dd2, 0x719e2cd2, 0x3af2eeb7,
  0x71410805, 0x3ba51e29,
  0x70e2cbc6, 0x3c56ba70, 0x708378ff, 0x3d07c1d6, 0x7023109a, 0x3db832a6,
  0x6fc19385, 0x3e680b2c,
  0x6f5f02b2, 0x3f1749b8, 0x6efb5f12, 0x3fc5ec98, 0x6e96a99d, 0x4073f21d,
  0x6e30e34a, 0x4121589b,
  0x6dca0d14, 0x41ce1e65, 0x6d6227fa, 0x427a41d0, 0x6cf934fc, 0x4325c135,
  0x6c8f351c, 0x43d09aed,
  0x6c242960, 0x447acd50, 0x6bb812d1, 0x452456bd, 0x6b4af279, 0x45cd358f,
  0x6adcc964, 0x46756828,
  0x6a6d98a4, 0x471cece7, 0x69fd614a, 0x47c3c22f, 0x698c246c, 0x4869e665,
  0x6919e320, 0x490f57ee,
  0x68a69e81, 0x49b41533, 0x683257ab, 0x4a581c9e, 0x67bd0fbd, 0x4afb6c98,
  0x6746c7d8, 0x4b9e0390,
  0x66cf8120, 0x4c3fdff4, 0x66573cbb, 0x4ce10034, 0x65ddfbd3, 0x4d8162c4,
  0x6563bf92, 0x4e210617,
  0x64e88926, 0x4ebfe8a5, 0x646c59bf, 0x4f5e08e3, 0x63ef3290, 0x4ffb654d,
  0x637114cc, 0x5097fc5e,
  0x62f201ac, 0x5133cc94, 0x6271fa69, 0x51ced46e, 0x61f1003f, 0x5269126e,
  0x616f146c, 0x53028518,
  0x60ec3830, 0x539b2af0, 0x60686ccf, 0x5433027d, 0x5fe3b38d, 0x54ca0a4b,
  0x5f5e0db3, 0x556040e2,
  0x5ed77c8a, 0x55f5a4d2, 0x5e50015d, 0x568a34a9, 0x5dc79d7c, 0x571deefa,
  0x5d3e5237, 0x57b0d256,
  0x5cb420e0, 0x5842dd54, 0x5c290acc, 0x58d40e8c, 0x5b9d1154, 0x59646498,
  0x5b1035cf, 0x59f3de12,
  0x5a82799a, 0x5a82799a, 0x59f3de12, 0x5b1035cf, 0x59646498, 0x5b9d1154,
  0x58d40e8c, 0x5c290acc,
  0x5842dd54, 0x5cb420e0, 0x57b0d256, 0x5d3e5237, 0x571deefa, 0x5dc79d7c,
  0x568a34a9, 0x5e50015d,
  0x55f5a4d2, 0x5ed77c8a, 0x556040e2, 0x5f5e0db3, 0x54ca0a4b, 0x5fe3b38d,
  0x5433027d, 0x60686ccf,
  0x539b2af0, 0x60ec3830, 0x53028518, 0x616f146c, 0x5269126e, 0x61f1003f,
  0x51ced46e, 0x6271fa69,
  0x5133cc94, 0x62f201ac, 0x5097fc5e, 0x637114cc, 0x4ffb654d, 0x63ef3290,
  0x4f5e08e3, 0x646c59bf,
  0x4ebfe8a5, 0x64e88926, 0x4e210617, 0x6563bf92, 0x4d8162c4, 0x65ddfbd3,
  0x4ce10034, 0x66573cbb,
  0x4c3fdff4, 0x66cf8120, 0x4b9e0390, 0x6746c7d8, 0x4afb6c98, 0x67bd0fbd,
  0x4a581c9e, 0x683257ab,
  0x49b41533, 0x68a69e81, 0x490f57ee, 0x6919e320, 0x4869e665, 0x698c246c,
  0x47c3c22f, 0x69fd614a,
  0x471cece7, 0x6a6d98a4, 0x46756828, 0x6adcc964, 0x45cd358f, 0x6b4af279,
  0x452456bd, 0x6bb812d1,
  0x447acd50, 0x6c242960, 0x43d09aed, 0x6c8f351c, 0x4325c135, 0x6cf934fc,
  0x427a41d0, 0x6d6227fa,
  0x41ce1e65, 0x6dca0d14, 0x4121589b, 0x6e30e34a, 0x4073f21d, 0x6e96a99d,
  0x3fc5ec98, 0x6efb5f12,
  0x3f1749b8, 0x6f5f02b2, 0x3e680b2c, 0x6fc19385, 0x3db832a6, 0x7023109a,
  0x3d07c1d6, 0x708378ff,
  0x3c56ba70, 0x70e2cbc6, 0x3ba51e29, 0x71410805, 0x3af2eeb7, 0x719e2cd2,
  0x3a402dd2, 0x71fa3949,
  0x398cdd32, 0x72552c85, 0x38d8fe93, 0x72af05a7, 0x382493b0, 0x7307c3d0,
  0x376f9e46, 0x735f6626,
  0x36ba2014, 0x73b5ebd1, 0x36041ad9, 0x740b53fb, 0x354d9057, 0x745f9dd1,
  0x34968250, 0x74b2c884,
  0x33def287, 0x7504d345, 0x3326e2c3, 0x7555bd4c, 0x326e54c7, 0x75a585cf,
  0x31b54a5e, 0x75f42c0b,
  0x30fbc54d, 0x7641af3d, 0x3041c761, 0x768e0ea6, 0x2f875262, 0x76d94989,
  0x2ecc681e, 0x77235f2d,
  0x2e110a62, 0x776c4edb, 0x2d553afc, 0x77b417df, 0x2c98fbba, 0x77fab989,
  0x2bdc4e6f, 0x78403329,
  0x2b1f34eb, 0x78848414, 0x2a61b101, 0x78c7aba2, 0x29a3c485, 0x7909a92d,
  0x28e5714b, 0x794a7c12,
  0x2826b928, 0x798a23b1, 0x27679df4, 0x79c89f6e, 0x26a82186, 0x7a05eead,
  0x25e845b6, 0x7a4210d8,
  0x25280c5e, 0x7a7d055b, 0x24677758, 0x7ab6cba4, 0x23a6887f, 0x7aef6323,
  0x22e541af, 0x7b26cb4f,
  0x2223a4c5, 0x7b5d039e, 0x2161b3a0, 0x7b920b89, 0x209f701c, 0x7bc5e290,
  0x1fdcdc1b, 0x7bf88830,
  0x1f19f97b, 0x7c29fbee, 0x1e56ca1e, 0x7c5a3d50, 0x1d934fe5, 0x7c894bde,
  0x1ccf8cb3, 0x7cb72724,
  0x1c0b826a, 0x7ce3ceb2, 0x1b4732ef, 0x7d0f4218, 0x1a82a026, 0x7d3980ec,
  0x19bdcbf3, 0x7d628ac6,
  0x18f8b83c, 0x7d8a5f40, 0x183366e9, 0x7db0fdf8, 0x176dd9de, 0x7dd6668f,
  0x16a81305, 0x7dfa98a8,
  0x15e21445, 0x7e1d93ea, 0x151bdf86, 0x7e3f57ff, 0x145576b1, 0x7e5fe493,
  0x138edbb1, 0x7e7f3957,
  0x12c8106f, 0x7e9d55fc, 0x120116d5, 0x7eba3a39, 0x1139f0cf, 0x7ed5e5c6,
  0x1072a048, 0x7ef05860,
  0xfab272b, 0x7f0991c4, 0xee38766, 0x7f2191b4, 0xe1bc2e4, 0x7f3857f6,
  0xd53db92, 0x7f4de451,
  0xc8bd35e, 0x7f62368f, 0xbc3ac35, 0x7f754e80, 0xafb6805, 0x7f872bf3,
  0xa3308bd, 0x7f97cebd,
  0x96a9049, 0x7fa736b4, 0x8a2009a, 0x7fb563b3, 0x7d95b9e, 0x7fc25596,
  0x710a345, 0x7fce0c3e,
  0x647d97c, 0x7fd8878e, 0x57f0035, 0x7fe1c76b, 0x4b6195d, 0x7fe9cbc0,
  0x3ed26e6, 0x7ff09478,
  0x3242abf, 0x7ff62182, 0x25b26d7, 0x7ffa72d1, 0x1921d20, 0x7ffd885a,
  0xc90f88, 0x7fff6216,
  0x0, 0x7fffffff, 0xff36f078, 0x7fff6216, 0xfe6de2e0, 0x7ffd885a, 0xfda4d929,
  0x7ffa72d1,
  0xfcdbd541, 0x7ff62182, 0xfc12d91a, 0x7ff09478, 0xfb49e6a3, 0x7fe9cbc0,
  0xfa80ffcb, 0x7fe1c76b,
  0xf9b82684, 0x7fd8878e, 0xf8ef5cbb, 0x7fce0c3e, 0xf826a462, 0x7fc25596,
  0xf75dff66, 0x7fb563b3,
  0xf6956fb7, 0x7fa736b4, 0xf5ccf743, 0x7f97cebd, 0xf50497fb, 0x7f872bf3,
  0xf43c53cb, 0x7f754e80,
  0xf3742ca2, 0x7f62368f, 0xf2ac246e, 0x7f4de451, 0xf1e43d1c, 0x7f3857f6,
  0xf11c789a, 0x7f2191b4,
  0xf054d8d5, 0x7f0991c4, 0xef8d5fb8, 0x7ef05860, 0xeec60f31, 0x7ed5e5c6,
  0xedfee92b, 0x7eba3a39,
  0xed37ef91, 0x7e9d55fc, 0xec71244f, 0x7e7f3957, 0xebaa894f, 0x7e5fe493,
  0xeae4207a, 0x7e3f57ff,
  0xea1debbb, 0x7e1d93ea, 0xe957ecfb, 0x7dfa98a8, 0xe8922622, 0x7dd6668f,
  0xe7cc9917, 0x7db0fdf8,
  0xe70747c4, 0x7d8a5f40, 0xe642340d, 0x7d628ac6, 0xe57d5fda, 0x7d3980ec,
  0xe4b8cd11, 0x7d0f4218,
  0xe3f47d96, 0x7ce3ceb2, 0xe330734d, 0x7cb72724, 0xe26cb01b, 0x7c894bde,
  0xe1a935e2, 0x7c5a3d50,
  0xe0e60685, 0x7c29fbee, 0xe02323e5, 0x7bf88830, 0xdf608fe4, 0x7bc5e290,
  0xde9e4c60, 0x7b920b89,
  0xdddc5b3b, 0x7b5d039e, 0xdd1abe51, 0x7b26cb4f, 0xdc597781, 0x7aef6323,
  0xdb9888a8, 0x7ab6cba4,
  0xdad7f3a2, 0x7a7d055b, 0xda17ba4a, 0x7a4210d8, 0xd957de7a, 0x7a05eead,