fogus

/* PROG1.C                                                    */
/* Simple Hashing LZ77 Sliding Dictionary Compression Program */
/* By Rich Geldreich, Jr. October, 1993                       */
/* Originally compiled with QuickC v2.5 in the small model.   */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>

/* set this to 1 for a greedy encoder */

allanmac

===============================================================================================

Load three arrays (x, y and z) in SoA order, repack them and store them in AoS order.

Strategy: each warp permutes its load lane with:

   (rowNum + (laneId() * 3)) & 31

This will convert SoA into AoS but with x/y/z staggered across rows of registers.

allanmac

// -*- compile-command: "nvcc -m 32 -arch sm_35 -Xptxas=-v,-abi=no -cubin sha256.cu"; -*-

//
// Copyright 2013 Allan MacKinnon <[email protected]>
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to

bishboria

These links no longer work. Springer have pulled the free plug.

Graduate texts in mathematics

duplicates = multiple editions

A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen

A Classical Introduction to Modern Number Theory, Kenneth Ireland Michael Rosen

kmizu

import strutils
import lists
import re

type
  Parser[T] = proc(input: string): Maybe[(T, string)]
  Maybe*[T] = object
    value: T
    hasValue: bool

Egor-Skriptunoff

----------------------------------------------------------------------------------------------------------------
--   AUTOMAGIC TABLES
----------------------------------------------------------------------------------------------------------------
-- There is a well-known "standard" implementation of automagic tables at http://lua-users.org/wiki/AutomagicTables
--
-- Unfortunately, that implementation behaves weirdly in some situations:
--    local a = AutomagicTable()
--    local x = a.b.c
--    local y = a.b.c
--    assert(x == y)  -- assertion fails !

mmozeiko

MiniPerf

Example of how to capture CPU counters with ETW on Windows, perf on Linux or kperf on Apple.

Using ETW needs somewhat recently updated Windows 10 or 11. Not sure about exact version.

Currently tested on:

• etw on Qualcomm Snapdragon X Elite, Windows 11, arm64
• etw on AMD Zen 3, Windows 11 (with virtualization enabled in BIOS)

thesamesam

FAQ on the xz-utils backdoor (CVE-2024-3094)

This is a living document. Everything in this document is made in good faith of being accurate, but like I just said; we don't yet know everything about what's going on.

Background

On March 29th, 2024, a backdoor was discovered in xz-utils, a suite of software that