From 96d6da4e252b06dcfdc041e7df23e86161c33007 Mon Sep 17 00:00:00 2001 From: rihab kouki Date: Tue, 28 Jul 2020 11:24:49 +0100 Subject: Official ARM version: v5.6.0 --- docs/DSP/html/group__CmplxByCmplxMult.html | 82 ++++++++++++++---------------- 1 file changed, 38 insertions(+), 44 deletions(-) (limited to 'docs/DSP/html/group__CmplxByCmplxMult.html') diff --git a/docs/DSP/html/group__CmplxByCmplxMult.html b/docs/DSP/html/group__CmplxByCmplxMult.html index 05c9277..850f750 100644 --- a/docs/DSP/html/group__CmplxByCmplxMult.html +++ b/docs/DSP/html/group__CmplxByCmplxMult.html @@ -32,7 +32,7 @@ Logo
CMSIS-DSP -  Version 1.5.2 +  Version 1.7.0
CMSIS DSP Software Library
@@ -116,40 +116,40 @@ $(document).ready(function(){initNavTree('group__CmplxByCmplxMult.html','');}); - - - - - - - - - + + + + + + + + +

Functions

void arm_cmplx_mult_cmplx_f32 (float32_t *pSrcA, float32_t *pSrcB, float32_t *pDst, uint32_t numSamples)
 Floating-point complex-by-complex multiplication. More...
 
void arm_cmplx_mult_cmplx_q15 (q15_t *pSrcA, q15_t *pSrcB, q15_t *pDst, uint32_t numSamples)
 Q15 complex-by-complex multiplication. More...
 
void arm_cmplx_mult_cmplx_q31 (q31_t *pSrcA, q31_t *pSrcB, q31_t *pDst, uint32_t numSamples)
 Q31 complex-by-complex multiplication. More...
 
void arm_cmplx_mult_cmplx_f32 (const float32_t *pSrcA, const float32_t *pSrcB, float32_t *pDst, uint32_t numSamples)
 Floating-point complex-by-complex multiplication. More...
 
void arm_cmplx_mult_cmplx_q15 (const q15_t *pSrcA, const q15_t *pSrcB, q15_t *pDst, uint32_t numSamples)
 Q15 complex-by-complex multiplication. More...
 
void arm_cmplx_mult_cmplx_q31 (const q31_t *pSrcA, const q31_t *pSrcB, q31_t *pDst, uint32_t numSamples)
 Q31 complex-by-complex multiplication. More...
 

Description

Multiplies a complex vector by another complex vector and generates a complex result. The data in the complex arrays is stored in an interleaved fashion (real, imag, real, imag, ...). The parameter numSamples represents the number of complex samples processed. The complex arrays have a total of 2*numSamples real values.

The underlying algorithm is used:

-for(n=0; n<numSamples; n++) {
+for (n = 0; n < numSamples; n++) {
     pDst[(2*n)+0] = pSrcA[(2*n)+0] * pSrcB[(2*n)+0] - pSrcA[(2*n)+1] * pSrcB[(2*n)+1];
     pDst[(2*n)+1] = pSrcA[(2*n)+0] * pSrcB[(2*n)+1] + pSrcA[(2*n)+1] * pSrcB[(2*n)+0];
 }

There are separate functions for floating-point, Q15, and Q31 data types.

Function Documentation

- +
- + - + @@ -173,33 +173,31 @@ for(n=0; n<numSamples; n++) {
Parameters
void arm_cmplx_mult_cmplx_f32 (float32_t * const float32_t *  pSrcA,
float32_t * const float32_t *  pSrcB,
- - - - + + + +
[in]*pSrcApoints to the first input vector
[in]*pSrcBpoints to the second input vector
[out]*pDstpoints to the output vector
[in]numSamplesnumber of complex samples in each vector
[in]pSrcApoints to first input vector
[in]pSrcBpoints to second input vector
[out]pDstpoints to output vector
[in]numSamplesnumber of samples in each vector
-
Returns
none.
- -

Referenced by main().

+
Returns
none
- +
- + - + @@ -223,33 +221,32 @@ for(n=0; n<numSamples; n++) {
Parameters
void arm_cmplx_mult_cmplx_q15 (q15_t * const q15_t *  pSrcA,
q15_t * const q15_t *  pSrcB,
- - - - + + + +
[in]*pSrcApoints to the first input vector
[in]*pSrcBpoints to the second input vector
[out]*pDstpoints to the output vector
[in]numSamplesnumber of complex samples in each vector
[in]pSrcApoints to first input vector
[in]pSrcBpoints to second input vector
[out]pDstpoints to output vector
[in]numSamplesnumber of samples in each vector
-
Returns
none.
-

Scaling and Overflow Behavior:

-
The function implements 1.15 by 1.15 multiplications and finally output is converted into 3.13 format.
+
Returns
none
+
Scaling and Overflow Behavior
The function implements 1.15 by 1.15 multiplications and finally output is converted into 3.13 format.
- +
- + - + @@ -273,18 +270,15 @@ for(n=0; n<numSamples; n++) {
Parameters
void arm_cmplx_mult_cmplx_q31 (q31_t * const q31_t *  pSrcA,
q31_t * const q31_t *  pSrcB,
- - - - + + + +
[in]*pSrcApoints to the first input vector
[in]*pSrcBpoints to the second input vector
[out]*pDstpoints to the output vector
[in]numSamplesnumber of complex samples in each vector
[in]pSrcApoints to first input vector
[in]pSrcBpoints to second input vector
[out]pDstpoints to output vector
[in]numSamplesnumber of samples in each vector
-
Returns
none.
-

Scaling and Overflow Behavior:

-
The function implements 1.31 by 1.31 multiplications and finally output is converted into 3.29 format. Input down scaling is not required.
- -

Referenced by arm_dct4_q31().

+
Returns
none
+
Scaling and Overflow Behavior
The function implements 1.31 by 1.31 multiplications and finally output is converted into 3.29 format. Input down scaling is not required.
@@ -293,7 +287,7 @@ for(n=0; n<numSamples; n++) {