arm_common_tables.h File Reference

#include "arm_math.h"

Go to the source code of this file.

Macros
#define	twiddleCoef   twiddleCoef_4096
#define	ARMBITREVINDEXTABLE__16_TABLE_LENGTH   ((uint16_t)20 )
#define	ARMBITREVINDEXTABLE__32_TABLE_LENGTH   ((uint16_t)48 )
#define	ARMBITREVINDEXTABLE__64_TABLE_LENGTH   ((uint16_t)56 )
#define	ARMBITREVINDEXTABLE_128_TABLE_LENGTH   ((uint16_t)208 )
#define	ARMBITREVINDEXTABLE_256_TABLE_LENGTH   ((uint16_t)440 )
#define	ARMBITREVINDEXTABLE_512_TABLE_LENGTH   ((uint16_t)448 )
#define	ARMBITREVINDEXTABLE1024_TABLE_LENGTH   ((uint16_t)1800)
#define	ARMBITREVINDEXTABLE2048_TABLE_LENGTH   ((uint16_t)3808)
#define	ARMBITREVINDEXTABLE4096_TABLE_LENGTH   ((uint16_t)4032)
#define	ARMBITREVINDEXTABLE_FIXED___16_TABLE_LENGTH   ((uint16_t)12 )
#define	ARMBITREVINDEXTABLE_FIXED___32_TABLE_LENGTH   ((uint16_t)24 )
#define	ARMBITREVINDEXTABLE_FIXED___64_TABLE_LENGTH   ((uint16_t)56 )
#define	ARMBITREVINDEXTABLE_FIXED__128_TABLE_LENGTH   ((uint16_t)112 )
#define	ARMBITREVINDEXTABLE_FIXED__256_TABLE_LENGTH   ((uint16_t)240 )
#define	ARMBITREVINDEXTABLE_FIXED__512_TABLE_LENGTH   ((uint16_t)480 )
#define	ARMBITREVINDEXTABLE_FIXED_1024_TABLE_LENGTH   ((uint16_t)992 )
#define	ARMBITREVINDEXTABLE_FIXED_2048_TABLE_LENGTH   ((uint16_t)1984)
#define	ARMBITREVINDEXTABLE_FIXED_4096_TABLE_LENGTH   ((uint16_t)4032)

Variables
const uint16_t	armBitRevTable [1024]
const q15_t	armRecipTableQ15 [64]
const q31_t	armRecipTableQ31 [64]
const float32_t	twiddleCoef_16 [32]
const float32_t	twiddleCoef_32 [64]
const float32_t	twiddleCoef_64 [128]
const float32_t	twiddleCoef_128 [256]
const float32_t	twiddleCoef_256 [512]
const float32_t	twiddleCoef_512 [1024]
const float32_t	twiddleCoef_1024 [2048]
const float32_t	twiddleCoef_2048 [4096]
const float32_t	twiddleCoef_4096 [8192]
const q31_t	twiddleCoef_16_q31 [24]
const q31_t	twiddleCoef_32_q31 [48]
const q31_t	twiddleCoef_64_q31 [96]
const q31_t	twiddleCoef_128_q31 [192]
const q31_t	twiddleCoef_256_q31 [384]
const q31_t	twiddleCoef_512_q31 [768]
const q31_t	twiddleCoef_1024_q31 [1536]
const q31_t	twiddleCoef_2048_q31 [3072]
const q31_t	twiddleCoef_4096_q31 [6144]
const q15_t	twiddleCoef_16_q15 [24]
const q15_t	twiddleCoef_32_q15 [48]
const q15_t	twiddleCoef_64_q15 [96]
const q15_t	twiddleCoef_128_q15 [192]
const q15_t	twiddleCoef_256_q15 [384]
const q15_t	twiddleCoef_512_q15 [768]
const q15_t	twiddleCoef_1024_q15 [1536]
const q15_t	twiddleCoef_2048_q15 [3072]
const q15_t	twiddleCoef_4096_q15 [6144]
const float32_t	twiddleCoef_rfft_32 [32]
const float32_t	twiddleCoef_rfft_64 [64]
const float32_t	twiddleCoef_rfft_128 [128]
const float32_t	twiddleCoef_rfft_256 [256]
const float32_t	twiddleCoef_rfft_512 [512]
const float32_t	twiddleCoef_rfft_1024 [1024]
const float32_t	twiddleCoef_rfft_2048 [2048]
const float32_t	twiddleCoef_rfft_4096 [4096]
const uint16_t	armBitRevIndexTable16 [ARMBITREVINDEXTABLE__16_TABLE_LENGTH]
const uint16_t	armBitRevIndexTable32 [ARMBITREVINDEXTABLE__32_TABLE_LENGTH]
const uint16_t	armBitRevIndexTable64 [ARMBITREVINDEXTABLE__64_TABLE_LENGTH]
const uint16_t	armBitRevIndexTable128 [ARMBITREVINDEXTABLE_128_TABLE_LENGTH]
const uint16_t	armBitRevIndexTable256 [ARMBITREVINDEXTABLE_256_TABLE_LENGTH]
const uint16_t	armBitRevIndexTable512 [ARMBITREVINDEXTABLE_512_TABLE_LENGTH]
const uint16_t	armBitRevIndexTable1024 [ARMBITREVINDEXTABLE1024_TABLE_LENGTH]
const uint16_t	armBitRevIndexTable2048 [ARMBITREVINDEXTABLE2048_TABLE_LENGTH]
const uint16_t	armBitRevIndexTable4096 [ARMBITREVINDEXTABLE4096_TABLE_LENGTH]
const uint16_t	armBitRevIndexTable_fixed_16 [ARMBITREVINDEXTABLE_FIXED___16_TABLE_LENGTH]
const uint16_t	armBitRevIndexTable_fixed_32 [ARMBITREVINDEXTABLE_FIXED___32_TABLE_LENGTH]
const uint16_t	armBitRevIndexTable_fixed_64 [ARMBITREVINDEXTABLE_FIXED___64_TABLE_LENGTH]
const uint16_t	armBitRevIndexTable_fixed_128 [ARMBITREVINDEXTABLE_FIXED__128_TABLE_LENGTH]
const uint16_t	armBitRevIndexTable_fixed_256 [ARMBITREVINDEXTABLE_FIXED__256_TABLE_LENGTH]
const uint16_t	armBitRevIndexTable_fixed_512 [ARMBITREVINDEXTABLE_FIXED__512_TABLE_LENGTH]
const uint16_t	armBitRevIndexTable_fixed_1024 [ARMBITREVINDEXTABLE_FIXED_1024_TABLE_LENGTH]
const uint16_t	armBitRevIndexTable_fixed_2048 [ARMBITREVINDEXTABLE_FIXED_2048_TABLE_LENGTH]
const uint16_t	armBitRevIndexTable_fixed_4096 [ARMBITREVINDEXTABLE_FIXED_4096_TABLE_LENGTH]
const float32_t	sinTable_f32 [FAST_MATH_TABLE_SIZE+1]
const q31_t	sinTable_q31 [FAST_MATH_TABLE_SIZE+1]
const q15_t	sinTable_q15 [FAST_MATH_TABLE_SIZE+1]

Macro Definition Documentation

#define ARMBITREVINDEXTABLE1024_TABLE_LENGTH   ((uint16_t)1800)

Definition at line 96 of file arm_common_tables.h.

#define ARMBITREVINDEXTABLE2048_TABLE_LENGTH   ((uint16_t)3808)

Definition at line 97 of file arm_common_tables.h.

#define ARMBITREVINDEXTABLE4096_TABLE_LENGTH   ((uint16_t)4032)

Definition at line 98 of file arm_common_tables.h.

#define ARMBITREVINDEXTABLE_128_TABLE_LENGTH   ((uint16_t)208 )

Definition at line 93 of file arm_common_tables.h.

#define ARMBITREVINDEXTABLE_256_TABLE_LENGTH   ((uint16_t)440 )

Definition at line 94 of file arm_common_tables.h.

#define ARMBITREVINDEXTABLE_512_TABLE_LENGTH   ((uint16_t)448 )

Definition at line 95 of file arm_common_tables.h.

#define ARMBITREVINDEXTABLE__16_TABLE_LENGTH   ((uint16_t)20 )

Definition at line 90 of file arm_common_tables.h.

#define ARMBITREVINDEXTABLE__32_TABLE_LENGTH   ((uint16_t)48 )

Definition at line 91 of file arm_common_tables.h.

#define ARMBITREVINDEXTABLE__64_TABLE_LENGTH   ((uint16_t)56 )

Definition at line 92 of file arm_common_tables.h.

#define ARMBITREVINDEXTABLE_FIXED_1024_TABLE_LENGTH   ((uint16_t)992 )

Definition at line 117 of file arm_common_tables.h.

#define ARMBITREVINDEXTABLE_FIXED_2048_TABLE_LENGTH   ((uint16_t)1984)

Definition at line 118 of file arm_common_tables.h.

#define ARMBITREVINDEXTABLE_FIXED_4096_TABLE_LENGTH   ((uint16_t)4032)

Definition at line 119 of file arm_common_tables.h.

#define ARMBITREVINDEXTABLE_FIXED__128_TABLE_LENGTH   ((uint16_t)112 )

Definition at line 114 of file arm_common_tables.h.

#define ARMBITREVINDEXTABLE_FIXED__256_TABLE_LENGTH   ((uint16_t)240 )

Definition at line 115 of file arm_common_tables.h.

#define ARMBITREVINDEXTABLE_FIXED__512_TABLE_LENGTH   ((uint16_t)480 )

Definition at line 116 of file arm_common_tables.h.

#define ARMBITREVINDEXTABLE_FIXED___16_TABLE_LENGTH   ((uint16_t)12 )

Definition at line 111 of file arm_common_tables.h.

#define ARMBITREVINDEXTABLE_FIXED___32_TABLE_LENGTH   ((uint16_t)24 )

Definition at line 112 of file arm_common_tables.h.

#define ARMBITREVINDEXTABLE_FIXED___64_TABLE_LENGTH   ((uint16_t)56 )

Definition at line 113 of file arm_common_tables.h.

#define twiddleCoef   twiddleCoef_4096

Definition at line 60 of file arm_common_tables.h.

Variable Documentation

const uint16_t armBitRevIndexTable1024[ARMBITREVINDEXTABLE1024_TABLE_LENGTH]

Definition at line 21343 of file arm_common_tables.c.

const uint16_t armBitRevIndexTable128[ARMBITREVINDEXTABLE_128_TABLE_LENGTH]

Definition at line 21247 of file arm_common_tables.c.

const uint16_t armBitRevIndexTable16[ARMBITREVINDEXTABLE__16_TABLE_LENGTH]

Definition at line 21224 of file arm_common_tables.c.

const uint16_t armBitRevIndexTable2048[ARMBITREVINDEXTABLE2048_TABLE_LENGTH]

Definition at line 21495 of file arm_common_tables.c.

const uint16_t armBitRevIndexTable256[ARMBITREVINDEXTABLE_256_TABLE_LENGTH]

Definition at line 21265 of file arm_common_tables.c.

const uint16_t armBitRevIndexTable32[ARMBITREVINDEXTABLE__32_TABLE_LENGTH]

Definition at line 21230 of file arm_common_tables.c.

const uint16_t armBitRevIndexTable4096[ARMBITREVINDEXTABLE4096_TABLE_LENGTH]

Definition at line 21837 of file arm_common_tables.c.

const uint16_t armBitRevIndexTable512[ARMBITREVINDEXTABLE_512_TABLE_LENGTH]

Definition at line 21303 of file arm_common_tables.c.

const uint16_t armBitRevIndexTable64[ARMBITREVINDEXTABLE__64_TABLE_LENGTH]

Definition at line 21238 of file arm_common_tables.c.

const uint16_t armBitRevIndexTable_fixed_1024[ARMBITREVINDEXTABLE_FIXED_1024_TABLE_LENGTH]

Definition at line 22294 of file arm_common_tables.c.

const uint16_t armBitRevIndexTable_fixed_128[ARMBITREVINDEXTABLE_FIXED__128_TABLE_LENGTH]

Definition at line 22230 of file arm_common_tables.c.

const uint16_t armBitRevIndexTable_fixed_16[ARMBITREVINDEXTABLE_FIXED___16_TABLE_LENGTH]

Definition at line 22209 of file arm_common_tables.c.

const uint16_t armBitRevIndexTable_fixed_2048[ARMBITREVINDEXTABLE_FIXED_2048_TABLE_LENGTH]

Definition at line 22368 of file arm_common_tables.c.

const uint16_t armBitRevIndexTable_fixed_256[ARMBITREVINDEXTABLE_FIXED__256_TABLE_LENGTH]

Definition at line 22241 of file arm_common_tables.c.

const uint16_t armBitRevIndexTable_fixed_32[ARMBITREVINDEXTABLE_FIXED___32_TABLE_LENGTH]

Definition at line 22215 of file arm_common_tables.c.

const uint16_t armBitRevIndexTable_fixed_4096[ARMBITREVINDEXTABLE_FIXED_4096_TABLE_LENGTH]

Definition at line 22524 of file arm_common_tables.c.

const uint16_t armBitRevIndexTable_fixed_512[ARMBITREVINDEXTABLE_FIXED__512_TABLE_LENGTH]

Definition at line 22260 of file arm_common_tables.c.

const uint16_t armBitRevIndexTable_fixed_64[ARMBITREVINDEXTABLE_FIXED___64_TABLE_LENGTH]

Definition at line 22222 of file arm_common_tables.c.

const q15_t armRecipTableQ15[64]

end of CFFT_CIFFT group

Definition at line 21193 of file arm_common_tables.c.

const q31_t armRecipTableQ31[64]

Definition at line 21210 of file arm_common_tables.c.

const float32_t sinTable_f32[FAST_MATH_TABLE_SIZE+1]

Example code for the generation of the floating-point sine table:

tableSize = 512;    
for(n = 0; n < (tableSize + 1); n++)    
{    
 sinTable[n]=sin(2*pi*n/tableSize);    
}

where pi value is 3.14159265358979

Definition at line 26988 of file arm_common_tables.c.

const q15_t sinTable_q15[FAST_MATH_TABLE_SIZE+1]

Table values are in Q15 (1.15 fixed-point format) and generation is done in three steps. First, generate sin values in floating point:

tableSize = 512;      
for(n = 0; n < (tableSize + 1); n++)    
{    
 sinTable[n]= sin(2*pi*n/tableSize);    
} 

where pi value is 3.14159265358979

Second, convert floating-point to Q15 (Fixed point): (sinTable[i] * pow(2, 15))

Finally, round to the nearest integer value: sinTable[i] += (sinTable[i] > 0 ? 0.5 :-0.5);

Definition at line 27210 of file arm_common_tables.c.

const q31_t sinTable_q31[FAST_MATH_TABLE_SIZE+1]

Table values are in Q31 (1.31 fixed-point format) and generation is done in three steps. First, generate sin values in floating point:

tableSize = 512;      
for(n = 0; n < (tableSize + 1); n++)    
{    
 sinTable[n]= sin(2*pi*n/tableSize);    
} 

where pi value is 3.14159265358979

Second, convert floating-point to Q31 (Fixed point): (sinTable[i] * pow(2, 31))

Finally, round to the nearest integer value: sinTable[i] += (sinTable[i] > 0 ? 0.5 :-0.5);

Definition at line 27103 of file arm_common_tables.c.

const float32_t twiddleCoef_rfft_1024[1024]

Definition at line 23381 of file arm_common_tables.c.

const float32_t twiddleCoef_rfft_128[128]

Definition at line 22924 of file arm_common_tables.c.

const float32_t twiddleCoef_rfft_2048[2048]

Definition at line 23896 of file arm_common_tables.c.

const float32_t twiddleCoef_rfft_256[256]

Definition at line 22991 of file arm_common_tables.c.

const float32_t twiddleCoef_rfft_32[32]

Example code for Floating-point RFFT Twiddle factors Generation:

TW = exp(2*pi*i*[0:L/2-1]/L - pi/2*i).' 

Real and Imag values are in interleaved fashion

Definition at line 22870 of file arm_common_tables.c.

const float32_t twiddleCoef_rfft_4096[4096]

Definition at line 24923 of file arm_common_tables.c.

const float32_t twiddleCoef_rfft_512[512]

Definition at line 23122 of file arm_common_tables.c.

const float32_t twiddleCoef_rfft_64[64]

Definition at line 22889 of file arm_common_tables.c.