- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

-Variables
const uint16_t	armBitRevTable [1024]

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 q15_t ALIGN4	armRecipTableQ15 [64]

const q31_t	armRecipTableQ31 [64]

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	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 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]

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Variable Documentation

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const uint16_t armBitRevIndexTable1024[ARMBITREVINDEXTABLE1024_TABLE_LENGTH]

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Referenced by arm_rfft_fast_init_f32().

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const uint16_t armBitRevIndexTable128[ARMBITREVINDEXTABLE_128_TABLE_LENGTH]

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Referenced by arm_rfft_fast_init_f32().

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const uint16_t armBitRevIndexTable16[ARMBITREVINDEXTABLE__16_TABLE_LENGTH]

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Referenced by arm_rfft_fast_init_f32().

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const uint16_t armBitRevIndexTable2048[ARMBITREVINDEXTABLE2048_TABLE_LENGTH]

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const uint16_t armBitRevIndexTable256[ARMBITREVINDEXTABLE_256_TABLE_LENGTH]

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Referenced by arm_rfft_fast_init_f32().

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const uint16_t armBitRevIndexTable32[ARMBITREVINDEXTABLE__32_TABLE_LENGTH]

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Referenced by arm_rfft_fast_init_f32().

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const uint16_t armBitRevIndexTable4096[ARMBITREVINDEXTABLE4096_TABLE_LENGTH]

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const uint16_t armBitRevIndexTable512[ARMBITREVINDEXTABLE_512_TABLE_LENGTH]

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Referenced by arm_rfft_fast_init_f32().

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const uint16_t armBitRevIndexTable64[ARMBITREVINDEXTABLE__64_TABLE_LENGTH]

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Referenced by arm_rfft_fast_init_f32().

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const uint16_t armBitRevIndexTable_fixed_1024[ARMBITREVINDEXTABLE_FIXED_1024_TABLE_LENGTH]

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const uint16_t armBitRevIndexTable_fixed_128[ARMBITREVINDEXTABLE_FIXED__128_TABLE_LENGTH]

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const uint16_t armBitRevIndexTable_fixed_16[ARMBITREVINDEXTABLE_FIXED___16_TABLE_LENGTH]

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const uint16_t armBitRevIndexTable_fixed_2048[ARMBITREVINDEXTABLE_FIXED_2048_TABLE_LENGTH]

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const uint16_t armBitRevIndexTable_fixed_256[ARMBITREVINDEXTABLE_FIXED__256_TABLE_LENGTH]

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const uint16_t armBitRevIndexTable_fixed_32[ARMBITREVINDEXTABLE_FIXED___32_TABLE_LENGTH]

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const uint16_t armBitRevIndexTable_fixed_4096[ARMBITREVINDEXTABLE_FIXED_4096_TABLE_LENGTH]

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const uint16_t armBitRevIndexTable_fixed_512[ARMBITREVINDEXTABLE_FIXED__512_TABLE_LENGTH]

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const uint16_t armBitRevIndexTable_fixed_64[ARMBITREVINDEXTABLE_FIXED___64_TABLE_LENGTH]

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const q15_t ALIGN4 armRecipTableQ15[64]

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Referenced by arm_lms_norm_init_q15().

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const q31_t armRecipTableQ31[64]

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Referenced by arm_lms_norm_init_q31().

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const float32_t sinTable_f32[FAST_MATH_TABLE_SIZE+1]

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

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: where pi value is 3.14159265358979

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Referenced by arm_cos_f32(), arm_sin_cos_f32(), and arm_sin_f32().

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const q15_t sinTable_q15[FAST_MATH_TABLE_SIZE+1]

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

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where pi value is 3.14159265358979

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

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

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Referenced by arm_cos_q15(), and arm_sin_q15().

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const q31_t sinTable_q31[FAST_MATH_TABLE_SIZE+1]

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

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where pi value is 3.14159265358979

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

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Referenced by arm_cos_q31(), arm_sin_cos_q31(), and arm_sin_q31().

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const float32_t twiddleCoef_rfft_1024[1024]

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const float32_t twiddleCoef_rfft_128[128]

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const float32_t twiddleCoef_rfft_2048[2048]

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const float32_t twiddleCoef_rfft_256[256]

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const float32_t twiddleCoef_rfft_32[32]

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: Example code for Floating-point RFFT Twiddle factors Generation:

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

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: Real and Imag values are in interleaved fashion

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Referenced by arm_rfft_fast_init_f32().

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const float32_t twiddleCoef_rfft_4096[4096]

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const float32_t twiddleCoef_rfft_512[512]

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const float32_t twiddleCoef_rfft_64[64]

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Referenced by arm_rfft_fast_init_f32().

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Variable Documentation