From 76177aa280494bb36d7a0bcbda1078d4db717020 Mon Sep 17 00:00:00 2001 From: Ali Labbene Date: Mon, 9 Dec 2019 11:25:19 +0100 Subject: Official ARM version: v4.5 --- Documentation/DSP/html/group___basic_mult.html | 365 +++++++++++++++++++++++++ 1 file changed, 365 insertions(+) create mode 100644 Documentation/DSP/html/group___basic_mult.html (limited to 'Documentation/DSP/html/group___basic_mult.html') diff --git a/Documentation/DSP/html/group___basic_mult.html b/Documentation/DSP/html/group___basic_mult.html new file mode 100644 index 0000000..8a7190f --- /dev/null +++ b/Documentation/DSP/html/group___basic_mult.html @@ -0,0 +1,365 @@ + + + + + +Vector Multiplication +CMSIS-DSP: Vector Multiplication + + + + + + + + + + + + + + + +
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CMSIS-DSP +  Version 1.4.7 +
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CMSIS DSP Software Library
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+Functions
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Vector Multiplication
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Basic Math Functions
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+Functions

void arm_mult_f32 (float32_t *pSrcA, float32_t *pSrcB, float32_t *pDst, uint32_t blockSize)
 Floating-point vector multiplication.
 
void arm_mult_q15 (q15_t *pSrcA, q15_t *pSrcB, q15_t *pDst, uint32_t blockSize)
 Q15 vector multiplication.
 
void arm_mult_q31 (q31_t *pSrcA, q31_t *pSrcB, q31_t *pDst, uint32_t blockSize)
 Q31 vector multiplication.
 
void arm_mult_q7 (q7_t *pSrcA, q7_t *pSrcB, q7_t *pDst, uint32_t blockSize)
 Q7 vector multiplication.
 
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Description

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Element-by-element multiplication of two vectors.

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+    pDst[n] = pSrcA[n] * pSrcB[n],   0 <= n < blockSize.        
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There are separate functions for floating-point, Q7, Q15, and Q31 data types.

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Function Documentation

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void arm_mult_f32 (float32_t * pSrcA,
float32_t * pSrcB,
float32_t * pDst,
uint32_t blockSize 
)
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Parameters
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[in]*pSrcApoints to the first input vector
[in]*pSrcBpoints to the second input vector
[out]*pDstpoints to the output vector
[in]blockSizenumber of samples in each vector
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Returns
none.
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Examples:
arm_dotproduct_example_f32.c, arm_sin_cos_example_f32.c, and arm_variance_example_f32.c.
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References blockSize.

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Referenced by arm_dct4_f32(), and main().

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void arm_mult_q15 (q15_t * pSrcA,
q15_t * pSrcB,
q15_t * pDst,
uint32_t blockSize 
)
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Parameters
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[in]*pSrcApoints to the first input vector
[in]*pSrcBpoints to the second input vector
[out]*pDstpoints to the output vector
[in]blockSizenumber of samples in each vector
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Returns
none.
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Scaling and Overflow Behavior:

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The function uses saturating arithmetic. Results outside of the allowable Q15 range [0x8000 0x7FFF] will be saturated.
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References __SIMD32, and blockSize.

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Referenced by arm_dct4_q15().

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void arm_mult_q31 (q31_t * pSrcA,
q31_t * pSrcB,
q31_t * pDst,
uint32_t blockSize 
)
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Parameters
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[in]*pSrcApoints to the first input vector
[in]*pSrcBpoints to the second input vector
[out]*pDstpoints to the output vector
[in]blockSizenumber of samples in each vector
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Returns
none.
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Scaling and Overflow Behavior:

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The function uses saturating arithmetic. Results outside of the allowable Q31 range[0x80000000 0x7FFFFFFF] will be saturated.
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References blockSize, and clip_q63_to_q31().

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Referenced by arm_dct4_q31().

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void arm_mult_q7 (q7_t * pSrcA,
q7_t * pSrcB,
q7_t * pDst,
uint32_t blockSize 
)
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Parameters
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[in]*pSrcApoints to the first input vector
[in]*pSrcBpoints to the second input vector
[out]*pDstpoints to the output vector
[in]blockSizenumber of samples in each vector
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Returns
none.
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Scaling and Overflow Behavior:

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The function uses saturating arithmetic. Results outside of the allowable Q7 range [0x80 0x7F] will be saturated.
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References __PACKq7, __SIMD32, and blockSize.

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+ + + + -- cgit