OrangeTide

Quick Reference for SDL2
========================

Includes both prototypes and short examples of using the call.

int SDL_Init(Uint32 flags)
	SDL_Init(SDL_INIT_VIDEO|SDL_INIT_AUDIO);
void SDL_Quit(void)
	atexit(SDL_Quit);
const char* SDL_GetHint(const char* name)

OrangeTide

/* Montgomery's Ladder Technique
 * http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.5.4956&rep=rep1&type=pdf
 */
#include <stdio.h>
#include <limits.h>

static unsigned long long ipow(unsigned g, unsigned k)
{
        unsigned long long r0, r1;
        unsigned j;

OrangeTide

#define _XOPEN_SOURCE 700
#include <sys/select.h>

static void copyfdset(fd_set *d, fd_set *s, unsigned fd_max) {
        unsigned i;
        unsigned n = (fd_max + 1 + __NFDBITS - 1) / __NFDBITS;
        for(i = 0; i < n; i++) {
                d->fds_bits[i] = s->fds_bits[i];
        }
}

OrangeTide

/* a complicated set of macros to support empty __VA_ARGS__ macros.
 * example:
 * pr_dbg("Check\n");
 * pr_dbg("Check %d\n", 12);
 * pr_dbg("Check %d %s %d\n", 42, "Hello", 99);
 *
 * pr_info() and pr_err() macros don't use __func__ and __LINE__
 */
#ifndef DEBUG_H
#define DEBUG_H

OrangeTide

/* otadd0.c : add without using +,++ or -,-- */
/* clean:
int add(int a, int b)
{
        int r,n,c;
        for(r=c=0,n=1;n;n<<=1) {
                c = (a & b) ^ (c & (a ^ b));
                c <<= 1;
                r |= (a ^ b ^ c) & n;
        }

OrangeTide

/* bench.c : XOR pattern without any display/output to get a baseline benchmark */
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <sys/time.h>

#define BGRX8888(r, g, b) \
	((uint32_t)((unsigned char)(b)) << 24 | \
	(uint32_t)((unsigned char)(g)) << 16 | \

OrangeTide

/* base.c : command-line utility to convert numbers to different formats.
 * March 10, 2016 - PUBLIC DOMAIN */
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <limits.h>

int main(int argc, char **argv)
{

OrangeTide

/* vm.h - virtual machine */
#ifndef VM_H
#define VM_H
/* Goals:
 * - no allocations in library
 * - multithread safe
 * - easy opcode extensions
 * - single file
 */
#include <stddef.h>

OrangeTide

/* bitfield.h - bitfield macros */
/*
 * PUBLIC DOMAIN - NO COPYRIGHT CLAIMED - Jonathan Mayo - July 2005
 *
 * Updated January 2010
 */

#ifndef BITFIELD_H
#define BITFIELD_H
#include <limits.h>

OrangeTide

#define _XOPEN_SOURCE 700
#define _POSIX_C_SOURCE 200809L
#include <stdio.h>
#include <unistd.h>

int main() {
        int s, fd[2];
        pipe(fd);
        if (!fork()) { /* child */
                dup2(fd[0], STDIN_FILENO);