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@no-defun-allowed
no-defun-allowed / selling-lisp-by-the-pound.org
Last active April 17, 2024 06:10
Selling Lisp by the pound

Selling Lisp by the Pound

“Paper late!” cried a voice in the crowd,

“Old man dies!” The note he left was signed,

‘Old Kiczales’ - it seems he’s drowned!

@umanghome
umanghome / publish.yml
Last active September 16, 2024 12:34
GitHub Action: Generate a build and push to another branch
# .github/workflows/publish.yml
name: Generate a build and push to another branch
on:
push:
branches:
- master # Remove this line if your primary branch is "main"
- main # Remove this line if your primary branch is "master"
jobs:
@InNoHurryToCode
InNoHurryToCode / ClangOnWindows.md
Last active April 28, 2024 15:10
How to install clang on windows using the visual studio build tools

Clang on Windows (VS 2017 build tools)

There are plenty of tutorials online on how to install clang on windows with visual studioIDE and MinGW. However, there are none on clang with visual studio build tools.

Requirements:

  • 64-bit Windows 7 SP1 or newer with the latest updates installed
  • 6 GB of free space on the partition where Windows is installed
  • internet connection (for installation only)

1. Install VS 2017 build tools

%VS2017BuildToolsDir% = installation directory of VS 2017 build tools

@shafik
shafik / WhatIsStrictAliasingAndWhyDoWeCare.md
Last active October 29, 2024 12:06
What is Strict Aliasing and Why do we Care?

What is the Strict Aliasing Rule and Why do we care?

(OR Type Punning, Undefined Behavior and Alignment, Oh My!)

What is strict aliasing? First we will describe what is aliasing and then we can learn what being strict about it means.

In C and C++ aliasing has to do with what expression types we are allowed to access stored values through. In both C and C++ the standard specifies which expression types are allowed to alias which types. The compiler and optimizer are allowed to assume we follow the aliasing rules strictly, hence the term strict aliasing rule. If we attempt to access a value using a type not allowed it is classified as undefined behavior(UB). Once we have undefined behavior all bets are off, the results of our program are no longer reliable.

Unfortunately with strict aliasing violations, we will often obtain the results we expect, leaving the possibility the a future version of a compiler with a new optimization will break code we th

@JcBernack
JcBernack / BigDecimal.cs
Last active September 14, 2024 17:18
BigDecimal
using System;
using System.Numerics;
namespace Common
{
/// <summary>
/// Arbitrary precision decimal.
/// All operations are exact, except for division. Division never determines more digits than the given precision.
/// Source: https://gist.github.com/JcBernack/0b4eef59ca97ee931a2f45542b9ff06d
/// Based on https://stackoverflow.com/a/4524254
@kripken
kripken / hello_world.c
Last active September 29, 2024 17:39
Standalone WebAssembly Example
int doubler(int x) {
return 2 * x;
}
/// <summary>
/// Fast exponential approximation.
/// </summary>
/// <remarks>
/// Based on "A Fast, Compact Approximation of the Exponential Function" by Nicol N.Schraudolph (1999)
/// <code>e^x ~ a*x + b
/// a = 2 ^ (mantissa bits) / ln(2) ~ 12102203
/// b = (exponent bias) * 2^(mantissa bits) ~ 1065353216</code>
/// </remarks>
/// <param name="x">A number specifying a power.</param>
@mikesmullin
mikesmullin / x86-assembly-notes.md
Last active October 30, 2024 03:29
Notes on x86-64 Assembly and Machine Code

Mike's x86-64 Assembly (ASM) Notes

Assembling Binary Machine Code

Operating Modes:

These determine the assumed/default size of instruction operands, and restricts which opcodes are available, and how they are used.

Modern operating systems, booted inside Real mode,