Functions |
void | arm_abs_f32 (float32_t *pSrc, float32_t *pDst, uint32_t blockSize) |
| Floating-point vector absolute value.
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void | arm_abs_q15 (q15_t *pSrc, q15_t *pDst, uint32_t blockSize) |
| Q15 vector absolute value.
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void | arm_abs_q31 (q31_t *pSrc, q31_t *pDst, uint32_t blockSize) |
| Q31 vector absolute value.
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void | arm_abs_q7 (q7_t *pSrc, q7_t *pDst, uint32_t blockSize) |
| Q7 vector absolute value.
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Description
Computes the absolute value of a vector on an element-by-element basis.
pDst[n] = abs(pSrcA[n]), 0 <= n < blockSize.
The operation can be done in-place by setting the input and output pointers to the same buffer. There are separate functions for floating-point, Q7, Q15, and Q31 data types.
Function Documentation
void arm_abs_f32 |
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float32_t * |
pSrc, |
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float32_t * |
pDst, |
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uint32_t |
blockSize |
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) |
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- Parameters:
-
[in] | *pSrc | points to the input buffer |
[out] | *pDst | points to the output buffer |
[in] | blockSize | number of samples in each vector |
- Returns:
- none.
- Examples:
- arm_signal_converge_example_f32.c.
void arm_abs_q15 |
( |
q15_t * |
pSrc, |
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q15_t * |
pDst, |
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uint32_t |
blockSize |
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) |
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- Parameters:
-
[in] | *pSrc | points to the input buffer |
[out] | *pDst | points to the output buffer |
[in] | blockSize | number of samples in each vector |
- Returns:
- none.
Scaling and Overflow Behavior:
- The function uses saturating arithmetic. The Q15 value -1 (0x8000) will be saturated to the maximum allowable positive value 0x7FFF.
void arm_abs_q31 |
( |
q31_t * |
pSrc, |
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q31_t * |
pDst, |
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uint32_t |
blockSize |
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) |
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- Parameters:
-
[in] | *pSrc | points to the input buffer |
[out] | *pDst | points to the output buffer |
[in] | blockSize | number of samples in each vector |
- Returns:
- none.
Scaling and Overflow Behavior:
- The function uses saturating arithmetic. The Q31 value -1 (0x80000000) will be saturated to the maximum allowable positive value 0x7FFFFFFF.
void arm_abs_q7 |
( |
q7_t * |
pSrc, |
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q7_t * |
pDst, |
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uint32_t |
blockSize |
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) |
| |
- Parameters:
-
[in] | *pSrc | points to the input buffer |
[out] | *pDst | points to the output buffer |
[in] | blockSize | number of samples in each vector |
- Returns:
- none.
Scaling and Overflow Behavior:
- The function uses saturating arithmetic. The Q7 value -1 (0x80) will be saturated to the maximum allowable positive value 0x7F.