Christopher Wellons skeeto

skeeto / arena.c

Created December 28, 2025 01:19

	// Ref: https://old.reddit.com/r/C_Programming/comments/1pxat1v
	#include <assert.h>
	#include <stdarg.h>
	#include <stdint.h>
	#include <stdio.h>
	#include <string.h>

	#define new(a, n, t) (t *)alloc(a, n, sizeof(t), _Alignof(t))

	typedef struct Dtor Dtor;

skeeto / demo.c

Last active December 21, 2025 17:29

Physics demo

	// $ eval cc -g3 -o demo demo.c $(pkg-config --cflags --libs sdl2)
	// Ref: https://old.reddit.com/r/C_Programming/comments/1prwizy
	// Ref: https://github.com/Avery-Personal/Jubi
	#define JUBI_IMPLEMENTATION
	#include "Jubi.h"
	#include "SDL.h"

	static Sint32 randn(Uint64 *s, Sint32 lo, Sint32 hi)
	{
	s = s*0x3243f6a8885a308d + 1;

skeeto / baseline.c

Last active December 20, 2025 17:42

Baseline for a benchmark

	// https://old.reddit.com/r/C_Programming/comments/1pr881z/
	// $ cc -std=gnu23 -O -o baseline baseline.c
	#include <assert.h>
	#include <stddef.h>
	#include <stdint.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <unistd.h>

skeeto / example.c

Last active December 17, 2025 16:32

	// https://old.reddit.com/r/C_Programming/comments/1pnh9fq
	#include <assert.h>
	#include <stddef.h>
	#include <stdint.h>
	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>

	#define S(s) (Str){s, sizeof(s)-1}
	#define new(a, n, t) (t *)alloc(a, n, sizeof(t), _Alignof(t))

skeeto / exebuf.s

Created December 12, 2025 19:43

WNDPROC trampolines

skeeto / exebuf.s

Last active December 12, 2025 01:34

skeeto / spirograph.c

Created November 7, 2025 19:32

	// Ref: https://old.reddit.com/r/C_Programming/comments/1oqxeeq
	// This is free and unencumbered software released into the public domain.
	#include <math.h>
	#include <stdio.h>

	#define lenof(a) (int)(sizeof(a) / sizeof(*(a)))

	typedef struct { float x, y; } V2;
	typedef struct { float x, y, z; } V3;

skeeto / cube.asm

Created October 3, 2025 16:18

spinning cube in assembly

	; Assemble:
	; $ nasm -fwin32 cube.asm
	; Link with Mingw-w64:
	; $ cc -mwindows -o cube.exe cube.obj libglfw3.a -lglu32 -lopengl32
	; Link with MSVC:
	; $ link /subsystem:windows cube.obj glfw3.lib opengl32.lib glu32.lib user32.lib gdi32.lib shell32.lib
	;
	; This is free and unencumbered software released into the public domain.

	bits 32

skeeto / main.c

Last active September 16, 2025 19:41

	// Assumes input is a 1080x1527 PPM with minimal header named maze.ppm.
	// Outputs output.ppm with the solution drawn on top, and maze.txt with
	// the raw maze structure.
	//
	// This is free and unencumbered software released into the public domain.
	#include <math.h>
	#include <stdint.h>
	#include <stdio.h>
	#include <string.h>

skeeto / Makefile

Last active October 20, 2025 07:02

skeetocrt example CRT

	ALL = skeetocrt.dll skeetocrt.dll.a crt0.o

	all: $(ALL)

	skeetocrt.dll skeetocrt.dll.a: skeetocrt.c stdio.h
	cc -shared -g3 -fno-builtin -nostartfiles --entry=0 \
	-Wl,--out-implib=skeetocrt.dll.a -o skeetocrt.dll skeetocrt.c

	crt0.o: crt0.c stdio.h
	cc -c -g3 -fno-builtin -nostdlib -nostdinc -isystem . -o crt0.o crt0.c