V4.0.1 of the ARM CMSIS DSP libraries. Note that arm_bitreversal2.s, arm_cfft_f32.c and arm_rfft_fast_f32.c had to be removed. arm_bitreversal2.s will not assemble with the online tools. So, the fast f32 FFT functions are not yet available. All the other FFT functions are available.
Dependents: MPU9150_Example fir_f32 fir_f32 MPU9150_nucleo_noni2cdev ... more
Vector Subtraction
[Basic Math Functions]
Element-by-element subtraction of two vectors. More...
Functions | |
void | arm_sub_f32 (float32_t *pSrcA, float32_t *pSrcB, float32_t *pDst, uint32_t blockSize) |
Floating-point vector subtraction. | |
void | arm_sub_q15 (q15_t *pSrcA, q15_t *pSrcB, q15_t *pDst, uint32_t blockSize) |
Q15 vector subtraction. | |
void | arm_sub_q31 (q31_t *pSrcA, q31_t *pSrcB, q31_t *pDst, uint32_t blockSize) |
Q31 vector subtraction. | |
void | arm_sub_q7 (q7_t *pSrcA, q7_t *pSrcB, q7_t *pDst, uint32_t blockSize) |
Q7 vector subtraction. |
Detailed Description
Element-by-element subtraction of two vectors.
pDst[n] = pSrcA[n] - pSrcB[n], 0 <= n < blockSize.
There are separate functions for floating-point, Q7, Q15, and Q31 data types.
Function Documentation
void arm_sub_f32 | ( | float32_t * | pSrcA, |
float32_t * | pSrcB, | ||
float32_t * | pDst, | ||
uint32_t | blockSize | ||
) |
Floating-point vector subtraction.
- Parameters:
-
[in] *pSrcA points to the first input vector [in] *pSrcB points to the second input vector [out] *pDst points to the output vector [in] blockSize number of samples in each vector
- Returns:
- none.
Definition at line 74 of file arm_sub_f32.c.
void arm_sub_q15 | ( | q15_t * | pSrcA, |
q15_t * | pSrcB, | ||
q15_t * | pDst, | ||
uint32_t | blockSize | ||
) |
Q15 vector subtraction.
- Parameters:
-
[in] *pSrcA points to the first input vector [in] *pSrcB points to the second input vector [out] *pDst points to the output vector [in] blockSize number of samples in each vector
- Returns:
- none.
Scaling and Overflow Behavior:
- The function uses saturating arithmetic. Results outside of the allowable Q15 range [0x8000 0x7FFF] will be saturated.
Definition at line 66 of file arm_sub_q15.c.
void arm_sub_q31 | ( | q31_t * | pSrcA, |
q31_t * | pSrcB, | ||
q31_t * | pDst, | ||
uint32_t | blockSize | ||
) |
Q31 vector subtraction.
- Parameters:
-
[in] *pSrcA points to the first input vector [in] *pSrcB points to the second input vector [out] *pDst points to the output vector [in] blockSize number of samples in each vector
- Returns:
- none.
Scaling and Overflow Behavior:
- The function uses saturating arithmetic. Results outside of the allowable Q31 range [0x80000000 0x7FFFFFFF] will be saturated.
Definition at line 66 of file arm_sub_q31.c.
void arm_sub_q7 | ( | q7_t * | pSrcA, |
q7_t * | pSrcB, | ||
q7_t * | pDst, | ||
uint32_t | blockSize | ||
) |
Q7 vector subtraction.
- Parameters:
-
[in] *pSrcA points to the first input vector [in] *pSrcB points to the second input vector [out] *pDst points to the output vector [in] blockSize number of samples in each vector
- Returns:
- none.
Scaling and Overflow Behavior:
- The function uses saturating arithmetic. Results outside of the allowable Q7 range [0x80 0x7F] will be saturated.
Definition at line 66 of file arm_sub_q7.c.
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