From 9f95ff5b6ba01db09552b84a0ab79607060a2666 Mon Sep 17 00:00:00 2001 From: Ali Labbene Date: Wed, 11 Dec 2019 08:59:21 +0100 Subject: Official ARM version: v5.4.0 Add CMSIS V5.4.0, please refer to index.html available under \docs folder. Note: content of \CMSIS\Core\Include has been copied under \Include to keep the same structure used in existing projects, and thus avoid projects mass update Note: the following components have been removed from ARM original delivery (as not used in ST packages) - CMSIS_EW2018.pdf - .gitattributes - .gitignore - \Device - \CMSIS - \CoreValidation - \DAP - \Documentation - \DoxyGen - \Driver - \Pack - \RTOS\CMSIS_RTOS_Tutorial.pdf - \RTOS\RTX - \RTOS\Template - \RTOS2\RTX - \Utilities - All ARM/GCC projects files are deleted from \DSP, \RTOS and \RTOS2 Change-Id: Ia026c3f0f0d016627a4fb5a9032852c33d24b4d3 --- docs/DSP/html/group__RealFFT__Table.html | 288 +++++++++++++++++++++++++++++++ 1 file changed, 288 insertions(+) create mode 100644 docs/DSP/html/group__RealFFT__Table.html (limited to 'docs/DSP/html/group__RealFFT__Table.html') diff --git a/docs/DSP/html/group__RealFFT__Table.html b/docs/DSP/html/group__RealFFT__Table.html new file mode 100644 index 0000000..17a72c6 --- /dev/null +++ b/docs/DSP/html/group__RealFFT__Table.html @@ -0,0 +1,288 @@ + + + + + +Real FFT Tables +CMSIS-DSP: Real FFT Tables + + + + + + + + + + + + + + +
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CMSIS-DSP +  Version 1.5.2 +
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CMSIS DSP Software Library
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+Variables
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Real FFT Tables
Real FFT Functions
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+Variables

static const float32_t realCoefA [8192]
 
static const float32_t realCoefB [8192]
 
const q15_t ALIGN4 realCoefAQ15 [8192]
 
const q15_t ALIGN4 realCoefBQ15 [8192]
 
const q31_t realCoefAQ31 [8192]
 
const q31_t realCoefBQ31 [8192]
 
+

Description

+

Variable Documentation

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const float32_t realCoefA[8192]
+ 		+static
+
+
Generation of realCoefA array:
+
n = 4096 
for (i = 0; i < n; i++)
+ {
+   pATable[2 * i] = 0.5 * (1.0 - sin (2 * PI / (double) (2 * n) * (double) i));
+   pATable[2 * i + 1] = 0.5 * (-1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
+ }
+ +

Referenced by arm_rfft_init_f32().

+ +
+
+ +
+
+ + + + +
const q15_t ALIGN4 realCoefAQ15[8192]
+
+
Generation fixed-point realCoefAQ15 array in Q15 format:
+
n = 4096 
for (i = 0; i < n; i++)
+ {
+   pATable[2 * i] = 0.5 * (1.0 - sin (2 * PI / (double) (2 * n) * (double) i));
+   pATable[2 * i + 1] = 0.5 * (-1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
+ }
+
Convert to fixed point Q15 format round(pATable[i] * pow(2, 15))
+ +

Referenced by arm_rfft_init_q15().

+ +
+
+ +
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+ + + + +
const q31_t realCoefAQ31[8192]
+
+
Generation fixed-point realCoefAQ31 array in Q31 format:
+
n = 4096 
for (i = 0; i < n; i++)
+{
+   pATable[2 * i] = 0.5 * (1.0 - sin (2 * PI / (double) (2 * n) * (double) i));
+   pATable[2 * i + 1] = 0.5 * (-1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
+}
+
Convert to fixed point Q31 format round(pATable[i] * pow(2, 31))
+ +

Referenced by arm_rfft_init_q31().

+ +
+
+ +
+
+ + + + + +
+ + + + +
const float32_t realCoefB[8192]
+ 		+static
+
+
Generation of realCoefB array:
+
n = 4096 
for (i = 0; i < n; i++)
+{
+   pBTable[2 * i] = 0.5 * (1.0 + sin (2 * PI / (double) (2 * n) * (double) i));
+   pBTable[2 * i + 1] = 0.5 * (1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
+ }
+ +

Referenced by arm_rfft_init_f32().

+ +
+
+ +
+
+ + + + +
const q15_t ALIGN4 realCoefBQ15[8192]
+
+
Generation of real_CoefB array:
+
n = 4096 
for (i = 0; i < n; i++)
+ {
+   pBTable[2 * i] = 0.5 * (1.0 + sin (2 * PI / (double) (2 * n) * (double) i));
+   pBTable[2 * i + 1] = 0.5 * (1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
+ }
+
Convert to fixed point Q15 format round(pBTable[i] * pow(2, 15))
+ +

Referenced by arm_rfft_init_q15().

+ +
+
+ +
+
+ + + + +
const q31_t realCoefBQ31[8192]
+
+
Generation of realCoefBQ31 array:
+
n = 4096 
for (i = 0; i < n; i++)
+{
+   pBTable[2 * i] = 0.5 * (1.0 + sin (2 * PI / (double) (2 * n) * (double) i));
+   pBTable[2 * i + 1] = 0.5 * (1.0 * cos (2 * PI / (double) (2 * n) * (double) i));
+}
+
Convert to fixed point Q31 format round(pBTable[i] * pow(2, 31))
+ +

Referenced by arm_rfft_init_q31().

+ +
+
+
+
+ + + + -- cgit