Youka

#ifndef DATA_STACK_H	// Include guard
#define DATA_STACK_H

#include <stdlib.h>	// size_t, NULL, malloc, free

// Stack node
typedef struct data_stack_node{
	void* data;	// Userdata
	size_t data_len;	// Userdata byte length
	struct data_stack_node* prev;	// Reference to previous node

Youka

-- Frequency analyzer
local function goertzel(samples, sample_rate, freq)
	-- Get coefficient from target and maximal frequency
	local coeff = 2 * math.cos(2 * math.pi * freq / sample_rate)
	-- Process samples
	local s_prev, s_prev2, s = 0, 0
	for i=1, #samples do
		s = samples[i] + coeff * s_prev - s_prev2
		s_prev2, s_prev = s_prev, s
	end

Youka

#include <stdint.h>	// uint8_t, uint16_t, uintptr_t
#include <string.h>	// memset

// Data are dirty?
int is_dirty_naive(const uint16_t width, const uint16_t height, const uint16_t stride, const uint8_t* data){
	for(uint16_t row = 0; row < height; ++row){
		for(uint16_t col = 0; col < width; ++col)
			if(data[col] > 0)
				return 1;
		data += stride;

Youka

<?PHP

function timeout_exec($cmd, $stdin = "", &$stdout, &$stderr, $timeout = 0){
	// Initialize output
	$stdout = "";
	$stderr = "";
	// Start process
	$pipes = array();
	$process = proc_open($cmd, array(array('pipe','r'),array('pipe','w'),array('pipe','w')), $pipes);
	if(!is_resource($process))

Youka

#pragma once

#include <deque>
#include <algorithm>

template<typename Key, typename Value>
class Cache{
    private:
        std::deque<std::pair<Key,Value>> data;
        const unsigned int max_size;

Youka

#include <ext/stdio_filebuf.h>	// fstream (all sorts of IO stuff) + stdio_filebuf (=streambuf)
#include <fcntl.h>	// _O_RDONLY
#include <iostream>	// cout

int main(){
	__gnu_cxx::stdio_filebuf<char> wfile_buf(_wopen(L"D:\\...\\の.txt", _O_RDONLY), std::ios_base::in);
	std::istream wfile_stream(&wfile_buf);
	wfile_stream.seekg(0, std::ios_base::end);
	std::cout << wfile_stream.tellg();
	return 0;

Youka

@echo off
rem Set console appearance
title Java environment (%cd%)
color 0C
rem Set console environment
if "%~1"=="" (
	set JAVA_BIN=C:\Program Files\Java\jdk1.8.0_45\bin
) else (
	set JAVA_BIN=%~1
)

Youka

#include <emmintrin.h>	// SSE2

static unsigned short x[8] = {0, 55, 2, 62003, 786, 5555, 123, 32111};	// Dividend

__attribute__((noinline)) static void test_div_x86(unsigned i){
	for(; i; --i)
		x[0] /= i,
		x[1] /= i,
		x[2] /= i,
		x[3] /= i,

Youka

#include <stdlib.h>
#include <stdio.h>
#ifdef __SSE2__
	#include <emmintrin.h>
#endif

static double calc_pi(unsigned n){
	double pi, x;
#ifdef __SSE2__
	const __m128d four = _mm_set1_pd(4.0);

Youka

#include <string.h>
#include <stdlib.h>

// Replace string in string by creating a new one
char* str_replace(char* original, const char* find, const char* replacement, const char free_original){
	// Initializations
	int found_count = 0;
	const size_t find_len = strlen(find), replacement_len = strlen(replacement);
	char* result, *presult;
	const char* poriginal = original, *found;