CMSIS-DSP: arm_common_tables.h File Reference

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arm_common_tables.h File Reference

## Macros
#define | twiddleCoef
#define | ARMBITREVINDEXTABLE_16_TABLE_LENGTH
#define | ARMBITREVINDEXTABLE_32_TABLE_LENGTH
#define | ARMBITREVINDEXTABLE_64_TABLE_LENGTH
#define | ARMBITREVINDEXTABLE_128_TABLE_LENGTH
#define | ARMBITREVINDEXTABLE_256_TABLE_LENGTH
#define | ARMBITREVINDEXTABLE_512_TABLE_LENGTH
#define | ARMBITREVINDEXTABLE_1024_TABLE_LENGTH
#define | ARMBITREVINDEXTABLE_2048_TABLE_LENGTH
#define | ARMBITREVINDEXTABLE_4096_TABLE_LENGTH
#define | ARMBITREVINDEXTABLE_FIXED_16_TABLE_LENGTH
#define | ARMBITREVINDEXTABLE_FIXED_32_TABLE_LENGTH
#define | ARMBITREVINDEXTABLE_FIXED_64_TABLE_LENGTH
#define | ARMBITREVINDEXTABLE_FIXED_128_TABLE_LENGTH
#define | ARMBITREVINDEXTABLE_FIXED_256_TABLE_LENGTH
#define | ARMBITREVINDEXTABLE_FIXED_512_TABLE_LENGTH
#define | ARMBITREVINDEXTABLE_FIXED_1024_TABLE_LENGTH
#define | ARMBITREVINDEXTABLE_FIXED_2048_TABLE_LENGTH
#define | ARMBITREVINDEXTABLE_FIXED_4096_TABLE_LENGTH

## Variables
const uint16_t | armBitRevTable [1024]
| Table for bit reversal process. More...
const float32_t | twiddleCoef_16 [32]
| Floating-point Twiddle factors Table Generation. More...
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]
| Q31 Twiddle factors Table. More...
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]
| q15 Twiddle factors Table More...
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 [ARMBITREVINDEXTABLE_1024_TABLE_LENGTH]
const uint16_t | armBitRevIndexTable2048 [ARMBITREVINDEXTABLE_2048_TABLE_LENGTH]
const uint16_t | armBitRevIndexTable4096 [ARMBITREVINDEXTABLE_4096_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 | realCoefA [8192]
const float32_t | realCoefB [8192]
const q31_t | realCoefAQ31 [8192]
const q31_t | realCoefBQ31 [8192]
const q15_t | realCoefAQ15 [8192]
const q15_t | realCoefBQ15 [8192]
const float32_t | Weights_128 [256]
| Weights Table. More...
const float32_t | cos_factors_128 [128]
const float32_t | Weights_512 [1024]
const float32_t | cos_factors_512 [512]
const float32_t | Weights_2048 [4096]
const float32_t | cos_factors_2048 [2048]
const float32_t | Weights_8192 [16384]
const float32_t | cos_factors_8192 [8192]
const q15_t | WeightsQ15_128 [256]
const q15_t | cos_factorsQ15_128 [128]
const q15_t | WeightsQ15_512 [1024]
const q15_t | cos_factorsQ15_512 [512]
const q15_t | WeightsQ15_2048 [4096]
const q15_t | cos_factorsQ15_2048 [2048]
const q15_t | WeightsQ15_8192 [16384]
const q15_t | cos_factorsQ15_8192 [8192]
const q31_t | WeightsQ31_128 [256]
const q31_t | cos_factorsQ31_128 [128]
const q31_t | WeightsQ31_512 [1024]
const q31_t | cos_factorsQ31_512 [512]
const q31_t | WeightsQ31_2048 [4096]
const q31_t | cos_factorsQ31_2048 [2048]
const q31_t | WeightsQ31_8192 [16384]
const q31_t | cos_factorsQ31_8192 [8192]
const q15_t | armRecipTableQ15 [64]
const q31_t | armRecipTableQ31 [64]
| Q31 table for reciprocal. More...
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 ARMBITREVINDEXTABLE_1024_TABLE_LENGTH

#define ARMBITREVINDEXTABLE_128_TABLE_LENGTH

#define ARMBITREVINDEXTABLE_16_TABLE_LENGTH

#define ARMBITREVINDEXTABLE_2048_TABLE_LENGTH

#define ARMBITREVINDEXTABLE_256_TABLE_LENGTH

#define ARMBITREVINDEXTABLE_32_TABLE_LENGTH

#define ARMBITREVINDEXTABLE_4096_TABLE_LENGTH

#define ARMBITREVINDEXTABLE_512_TABLE_LENGTH

#define ARMBITREVINDEXTABLE_64_TABLE_LENGTH

#define ARMBITREVINDEXTABLE_FIXED_1024_TABLE_LENGTH

#define ARMBITREVINDEXTABLE_FIXED_128_TABLE_LENGTH

#define ARMBITREVINDEXTABLE_FIXED_16_TABLE_LENGTH

#define ARMBITREVINDEXTABLE_FIXED_2048_TABLE_LENGTH

#define ARMBITREVINDEXTABLE_FIXED_256_TABLE_LENGTH

#define ARMBITREVINDEXTABLE_FIXED_32_TABLE_LENGTH

#define ARMBITREVINDEXTABLE_FIXED_4096_TABLE_LENGTH

#define ARMBITREVINDEXTABLE_FIXED_512_TABLE_LENGTH

#define ARMBITREVINDEXTABLE_FIXED_64_TABLE_LENGTH

#define twiddleCoef

## Variable Documentation

const uint16_t armBitRevIndexTable1024[ARMBITREVINDEXTABLE_1024_TABLE_LENGTH]

const uint16_t armBitRevIndexTable128[ARMBITREVINDEXTABLE_128_TABLE_LENGTH]

const uint16_t armBitRevIndexTable16[ARMBITREVINDEXTABLE_16_TABLE_LENGTH]

end of CFFT_CIFFT group

const uint16_t armBitRevIndexTable2048[ARMBITREVINDEXTABLE_2048_TABLE_LENGTH]

const uint16_t armBitRevIndexTable256[ARMBITREVINDEXTABLE_256_TABLE_LENGTH]

const uint16_t armBitRevIndexTable32[ARMBITREVINDEXTABLE_32_TABLE_LENGTH]

const uint16_t armBitRevIndexTable4096[ARMBITREVINDEXTABLE_4096_TABLE_LENGTH]

const uint16_t armBitRevIndexTable512[ARMBITREVINDEXTABLE_512_TABLE_LENGTH]

const uint16_t armBitRevIndexTable64[ARMBITREVINDEXTABLE_64_TABLE_LENGTH]

const uint16_t armBitRevIndexTable_fixed_1024[ARMBITREVINDEXTABLE_FIXED_1024_TABLE_LENGTH]

const uint16_t armBitRevIndexTable_fixed_128[ARMBITREVINDEXTABLE_FIXED_128_TABLE_LENGTH]

const uint16_t armBitRevIndexTable_fixed_16[ARMBITREVINDEXTABLE_FIXED_16_TABLE_LENGTH]

const uint16_t armBitRevIndexTable_fixed_2048[ARMBITREVINDEXTABLE_FIXED_2048_TABLE_LENGTH]

const uint16_t armBitRevIndexTable_fixed_256[ARMBITREVINDEXTABLE_FIXED_256_TABLE_LENGTH]

const uint16_t armBitRevIndexTable_fixed_32[ARMBITREVINDEXTABLE_FIXED_32_TABLE_LENGTH]

const uint16_t armBitRevIndexTable_fixed_4096[ARMBITREVINDEXTABLE_FIXED_4096_TABLE_LENGTH]

const uint16_t armBitRevIndexTable_fixed_512[ARMBITREVINDEXTABLE_FIXED_512_TABLE_LENGTH]

const uint16_t armBitRevIndexTable_fixed_64[ARMBITREVINDEXTABLE_FIXED_64_TABLE_LENGTH]

const q15_t armRecipTableQ15[64]

const q31_t armRecipTableQ31[64]

const q15_t cos_factorsQ15_128[128]

const q15_t cos_factorsQ15_2048[2048]

const q15_t cos_factorsQ15_512[512]

const q15_t cos_factorsQ15_8192[8192]

const q15_t realCoefAQ15[8192]

const q15_t realCoefBQ15[8192]

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

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);

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);

const float32_t twiddleCoef_rfft_1024[1024]

const float32_t twiddleCoef_rfft_128[128]

const float32_t twiddleCoef_rfft_2048[2048]

const float32_t twiddleCoef_rfft_256[256]

const float32_t twiddleCoef_rfft_32[32]

  Example code for Floating-point RFFT Twiddle factors Generation:

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

  Real and Imag values are in interleaved fashion

const float32_t twiddleCoef_rfft_4096[4096]

const float32_t twiddleCoef_rfft_512[512]

const float32_t twiddleCoef_rfft_64[64]

const q15_t WeightsQ15_128[256]

const q15_t WeightsQ15_2048[4096]

const q15_t WeightsQ15_512[1024]

const q15_t WeightsQ15_8192[16384]