Ryan Wong kinchungwong

## RectUtility.cpp
// ======
//
// This code is not intended to be valid for C++ compilation.
//
// It is provided to  illustrate idea and design, and is provided
// for the purpose of discussion.
//
// ======

#include <cstdint>

## SimdRowFilterExample.cpp
//
// SimdRowFilterExample.cpp
//
// This code skeleton illustrates the structure of SIMD code
// used to take three input rows and generate one output row.
//
// In a different sample file, "SimdBetterStyleSupport.cpp",
// a small SIMD stylistic support library will be sketched
// to improve the readability of SIMD code.
//

## SimdBetterStyleSupport.cpp
//
// SimdBetterStyleSupport.cpp
//
// This is a code skeleton that illustrates how to improve the readability
// of SIMD code using a small stylistic support library.
//

#include <cstdint>
#include <vector>
#include <emmintrin.h>

## cpp_template_based_micro_opt_from_stackoverflow_profile.md

      
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                kinchungwong
                / cpp_template_based_micro_opt_from_stackoverflow_profile.md
            
            
              Created
              March 19, 2018 11:11
            
              
                Guidelines for C++ template-based micro-optimization
              
          
    Guidelines for C++ template-based micro-optimization

Start with the lowest level, most frequently executed code first.
Having chosen a fixed set of data types, implement the code in assembly.
Reimplement the code in plain C, not using any abstract data types, so that it compiles into the same assembly instructions.
Repeat steps 2 and 3 with a few different sets of data types.
Take all of the C code from steps 2 and 4, and reimplement using C++ templates. Determine the template arguments.
Identify all of the non-type-based validations needed by the template function.
Identify all of the type-based validations needed by the template function.
Package the template function into a class template method, and implement the non-type-based validations as its methods.


## question_rv32v_imgproc.md

      
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                kinchungwong
                / question_rv32v_imgproc.md
            
            
              Last active
              March 26, 2018 11:00
            
              
                Question on RISC-V Vector Extension (RV32V) regarding applications in image processing
              
          
    The question is simple:
Can RV32V implement e.g. 3x3 image filtering (convolution) which is a very common operation in image processing?
This is in reference to this quote:

"Not a great programming model, should move community back to autovectorizaVon/ autoparallelizaVon, but needed for compatibility"

(link) https://riscv.org/wp-content/uploads/2016/12/Wed0930-RISC-V-Vectors-Asanovic-UC-Berkeley-SiFive.pdf

  
## my_pledge_to_opencv.md

      
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                kinchungwong
                / my_pledge_to_opencv.md
            
            
              Created
              March 26, 2018 20:45
            
              
                My pledge to OpenCV
              
          
    My pledge to OpenCV

I will put, the greater good to the OpenCV project and its community, before:

my time
my expenditure
my views
my ego.


## opencv_universal_intrinsics_doctrine_vadim.md

      
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                kinchungwong
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              Last active
              March 28, 2018 05:44
            
              
                The philosophy of OpenCV universal intrinsics (must read)
              
          
    The philosophy of OpenCV universal intrinsics (must read)

1

opencv/opencv#10371 (comment)
2

opencv/opencv#7207

  
## git_clone_same_repo_repeatedly_save_bandwidth.md

      
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                kinchungwong
                / git_clone_same_repo_repeatedly_save_bandwidth.md
            
            
              Last active
              March 28, 2018 05:46
            
              
                Q: Having to clone OpenCV everyday, bandwidth?
              
          
    Q: Having to clone OpenCV everyday, bandwidth?

A: git clone --reference --dissociate

This markdown gist is a placeholder. I will be trying this command now, I don't know where it leads me to. I don't even know the basics of git, not to say its internals.
If something good/bad happens I will document it here.
It works! There's nothing to add here. Enjoy.

  
## install_python_on_windows.md

      
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                kinchungwong
                / install_python_on_windows.md
            
            
              Created
              March 28, 2018 06:14
            
              
                Installing Python on Windows where CMake can find it easily
              
          
    Installing Python on Windows where CMake can find it easily

0

Launch the installer as administrator, make sure to change settings to install for all users.
For example, it might go into C:\Program Files (x86)\Python36-32
1


## removing_symlink_windows10.md

      
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                kinchungwong
                / removing_symlink_windows10.md
            
            
              Created
              March 28, 2018 06:18
            
              
                Removing symbolic link on Windows 10
              
          
    Removing symbolic link on Windows 10

0 - The correct way


Administrative CMD.exe
rmdir
NOT del

1 - Don't!
	// ======
	//
	// This code is not intended to be valid for C++ compilation.
	//
	// It is provided to illustrate idea and design, and is provided
	// for the purpose of discussion.
	//
	// ======

	#include <cstdint>
	//
	// SimdRowFilterExample.cpp
	//
	// This code skeleton illustrates the structure of SIMD code
	// used to take three input rows and generate one output row.
	//
	// In a different sample file, "SimdBetterStyleSupport.cpp",
	// a small SIMD stylistic support library will be sketched
	// to improve the readability of SIMD code.
	//
	//
	// SimdBetterStyleSupport.cpp
	//
	// This is a code skeleton that illustrates how to improve the readability
	// of SIMD code using a small stylistic support library.
	//

	#include <cstdint>
	#include <vector>
	#include <emmintrin.h>