leok7v / arrays.c

Last active December 2, 2017 19:52

simplest C++ heap and stack array I can think of

	#include <memory.h>
	#include <stdio.h>
	#include <stdlib.h>

	#define null ((void*)0)
	#define mem_alloc malloc
	#define mem_realloc realloc
	#define mem_free free
	#define assertion(e, fmt, ...) if (!(e)) { printf("assertion failed: %s ", #e); printf(fmt, __VA_ARGS__); __debugbreak(); }
	#define assert(e) assertion(e, "");

leok7v / trace.h

Created January 2, 2018 22:25

trace.h

#define trace(format, ...) printf(__FILE__ "(%d) [%d] " format "\n", __LINE__, gettid(), ## __VA_ARGS__)

leok7v / system_np.c

Created February 1, 2018 02:00

Windows: system_np() - Creating a Child Process with Redirected Input and Output

	#include <windows.h>
	#include <stdio.h>
	#include <malloc.h>

	// Reworked MSDN sample starting with https://stackoverflow.com/questions/14147138/capture-output-of-spawned-process-to-string
	// https://msdn.microsoft.com/en-us/library/windows/desktop/ms682499(v=vs.85).aspx
	// Implemented in ~C99 instead of C++
	// Child Process window hidden (for use from WinMain() /SYSTEM:WINDOWS executable)
	// Creates background thread for peeking the pipes to avoid deadlocks.
	// Implements timeout in milliseconds and tames CPU utilization with WaitForMultipleObjects.

leok7v / cJSONFiles.zip

Last active July 5, 2018 07:01

test

View raw

leok7v / hashtable.h

Last active June 1, 2021 13:19

Simple hash table in C

	#ifndef HASHTABLE_DEFINITION // single file library cannot use pragma once
	#define HASHTABLE_DEFINITION // https://en.wikipedia.org/wiki/Header-only
	// https://github.com/nothings/single_file_libs
	/*

	License: "Unlicense" (public domain) see bottom of the file for details.

	This is brain dead 4 hours implementation of #153 of absolutely non-universal,
	simple, growing, lineral rehash, key and value retaining hashtable with open
	read/write access to table entries.

leok7v / build-apk.bash

Last active August 11, 2024 03:29

Single file bash script to build Android Hello World apk (target API=21) on osx

	#!/bin/bash
	# https://medium.com/@authmane512/how-to-build-an-apk-from-command-line-without-ide-7260e1e22676
	# dependencies:
	# https://installvirtual.com/install-openjdk-8-on-mac-using-brew-adoptopenjdk/
	# brew updata
	# brew tap AdoptOpenJDK/openjdk
	# brew cask install adoptopenjdk8
	# https://developer.android.com/ndk/downloads
	# https://dl.google.com/android/repository/sdk-tools-darwin-4333796.zip
	# and use:

leok7v / README.md

Last active May 26, 2020 01:41

dcode4 - Delta Hex Coding ('Compression')

Delta Hex Coding ('Compression')

TLDR

Here's how to compress greyscale image bytes using dcode4:

    static void foo(byte* data, int bytes) {
        byte cenoded[bytes * 2];
        int k = encode4(data, bytes, coded, sizeof(encoded));    
        byte decoded[bytes];
 int n = decode4(encoded, k, decoded, sizeof(decoded));

leok7v / vigil.h

Created September 27, 2021 01:13

better assert() with optional format and varadic args

	#pragma once /* Copyright (c) Dmitry "Leo" Kuznetsov 2021 see LICENSE for details */
	#include <assert.h> // to prevent further redefinition of assert

	// better assert(0 <= i && i < n, "index i=%d out of [0..%d( range", i, n);
	// also available as 'swear' and 'implore' instead of assert()
	// see: https://github.com/munificent/vigil

	#undef assert

	#if defined(_DEBUG) \|\| defined(DEBUG) \|\| defined(ASSERT_IN_NDEBUG)

leok7v / polyfit.c

Last active June 26, 2022 01:13

Weekend 1 hour project - needed simplest possible "least squares fitting of a polynomial"

	// polyfit
	// Created by leo on 6/25/22.
	// Copyright © 2022 leok7v.github.io. All rights reserved.

	#include <stdbool.h>
	#include <assert.h>
	#include <math.h>
	#include <float.h>

	// by Legendre in 1805:

leok7v / lorem_ipsum_generator.c

Created January 6, 2023 08:22

lorem ipsum generator in C

	#include <assert.h>
	#include <ctype.h>
	#include <stdint.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <time.h>

	typedef struct {
	char* text;

Leo Kuznetsov leok7v

Delta Hex Coding ('Compression')

TLDR