nicky-zs

#include <string.h>

void *__memcpy_glibc_2_2_5(void *, const void *, size_t);

asm(".symver __memcpy_glibc_2_2_5, memcpy@GLIBC_2.2.5");
void *__wrap_memcpy(void *dest, const void *src, size_t n)
{
    return __memcpy_glibc_2_2_5(dest, src, n); 
}

BobBurns

;example program using debouncing
;from AVR Programming by Elliot Williams p.115
;
;compile with gavrasm debouncer.asm
;flash with avrdude -c avrisp -p m168 -P /dev/tty.usbmodem1411 -b 19200 -U flash:w:debouncer.hex
;
.def temp = r16 
.device atmega168
;--- inits ---
.def b_pressed = r17 

cmuratori

/* ========================================================================
   $File: tools/ctime/ctime.c $
   $Date: 2016/05/08 04:16:55PM $
   $Revision: 7 $
   $Creator: Casey Muratori $
   $Notice: 

   The author of this software MAKES NO WARRANTY as to the RELIABILITY,
   SUITABILITY, or USABILITY of this software. USE IT AT YOUR OWN RISK.

mmozeiko

/* ========================================================================
   $File: tools/ctime/ctime.c $
   $Date: 2016/05/08 04:16:55PM $
   $Revision: 7 $
   $Creator: Casey Muratori $
   $Notice: 

   The author of this software MAKES NO WARRANTY as to the RELIABILITY,
   SUITABILITY, or USABILITY of this software. USE IT AT YOUR OWN RISK.

pdxjohnny

target remote 127.0.0.1:1234
layout asm
focus cmd
file main.elf
break *_start
continue

milanboers

curl -s https://api.github.com/users/milanboers/repos | grep \"clone_url\" | awk '{print $2}' | sed -e 's/"//g' -e 's/,//g' | xargs -n1 git clone

fay59

Here's a list of mildly interesting things about the C language that I learned mostly by consuming Clang's ASTs. Although surprises are getting sparser, I might continue to update this document over time.

There are many more mildly interesting features of C++, but the language is literally known for being weird, whereas C is usually considered smaller and simpler, so this is (almost) only about C.

1. Combined type and variable/field declaration, inside a struct scope [https://godbolt.org/g/Rh94Go]

struct foo {
   struct bar {
 int x;

takaswie

#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <stdint.h>
#include <limits.h>

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

d7samurai

Minimal D3D11 pt3

An elaboration on Minimal D3D11 pt2, adding shadowmapping and incorporating various improvements and alternative approaches to the rendering setup, such as manual vertex fetching, samplerless texture lookup, null shader depth map rendering and procedurally generated texture and instance data.

As before, this is intended to be an an "API familiarizer" - an uncluttered Direct3D 11 setup & basic rendering reference implementation, in the form of a complete, runnable Windows application contained in a single function and laid out in a linear, step-by-step fashion. No modern C++ / OOP / obscuring cruft, only ~190 LOC. View on YouTube

mmozeiko

#pragma once

// uncompressed png writer & reader
// supports only 8-bit and 16-bit formats

// Performance comparison for 8192x8192 BGRA8 image (256MB)
// Compiled with "clang -O2", AVX2 requires extra "-mavx2" or "/arch:AVX2" argument
//
// For libpng (compressed) uses default libpng/zlib compression settings
// For libpng (uncompressed) case following two functions are used: