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arm_cfft_instance_q15 Struct Reference
Instance structure for the fixed-point CFFT/CIFFT function. More...
#include <arm_math.h>
Data Fields | |
| uint16_t | fftLen |
| length of the FFT. | |
| const q15_t * | pTwiddle |
| points to the Twiddle factor table. | |
| const uint16_t * | pBitRevTable |
| points to the bit reversal table. | |
| uint16_t | bitRevLength |
| bit reversal table length. | |
| const uint32_t * | rearranged_twiddle_tab_stride1_arr |
| Per stage reordered twiddle pointer (offset 1) | |
| const uint32_t * | rearranged_twiddle_tab_stride2_arr |
| Per stage reordered twiddle pointer (offset 2) | |
| const uint32_t * | rearranged_twiddle_tab_stride3_arr |
| Per stage reordered twiddle pointer (offset 3) | |
| const q15_t * | rearranged_twiddle_stride1 |
| reordered twiddle offset 1 storage | |
| const q15_t * | rearranged_twiddle_stride2 |
| reordered twiddle offset 2 storage | |
Detailed Description
Instance structure for the fixed-point CFFT/CIFFT function.
Definition at line 3111 of file arm_math.h.
Field Documentation
| uint16_t bitRevLength |
bit reversal table length.
Definition at line 3116 of file arm_math.h.
| uint16_t fftLen |
length of the FFT.
Definition at line 3113 of file arm_math.h.
| const uint16_t* pBitRevTable |
points to the bit reversal table.
Definition at line 3115 of file arm_math.h.
| const q15_t* pTwiddle |
points to the Twiddle factor table.
Definition at line 3114 of file arm_math.h.
| const q15_t* rearranged_twiddle_stride1 |
reordered twiddle offset 1 storage
Definition at line 3121 of file arm_math.h.
| const q15_t* rearranged_twiddle_stride2 |
reordered twiddle offset 2 storage
Definition at line 3122 of file arm_math.h.
| const uint32_t* rearranged_twiddle_tab_stride1_arr |
Per stage reordered twiddle pointer (offset 1)
Definition at line 3118 of file arm_math.h.
| const uint32_t* rearranged_twiddle_tab_stride2_arr |
Per stage reordered twiddle pointer (offset 2)
Definition at line 3119 of file arm_math.h.
| const uint32_t* rearranged_twiddle_tab_stride3_arr |
Per stage reordered twiddle pointer (offset 3)
Definition at line 3120 of file arm_math.h.
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