demotomohiro

# Minimum example nim-glfw code to draw a triangle using OpenGL.
#
# There are more examples on nim-glfw repo:
# https://github.com/johnnovak/nim-glfw/tree/master/examples

# Get glad/gl.nim from
# https://glad.dav1d.de/#profile=core&language=nim&specification=gl&loader=on&api=gl%3D4.2
import glad/gl

# Install nim-glfw from

demotomohiro

import std/[cmdline, times, monotimes, random, sugar, os, typetraits]

const
  EnableTests = false
  EnableCount = not EnableTests and false
  EnableBench = not EnableTests

template bench(repeat: int; init, body: untyped): untyped =
  var minTime = initDuration(days = 2)
  for i in 1 .. repeat:

demotomohiro

import std/[cmdline, times, monotimes, random, hashes]

template bench(body: untyped): untyped =
  let start = getMonoTime()
  body
  let finish = getMonoTime()
  echo "Time: ", (finish - start).inMicroseconds, "μ sec"

proc main =
  # Use paramCount() to initialize rand so that compiler cannot run this code

demotomohiro

# https://nim-lang.org/docs/inotify.html

import std/[macros, os]
import posix, posix/inotify

macro testMasks(v: uint32; m: untyped; mstr: untyped; masks: varargs[untyped]): untyped =
  masks.expectMinLen 2
  result = newStmtList()
  let userCode = masks[^1]
  for i in 0 ..< (masks.len - 1):

demotomohiro

demotomohiro

import std/[math, options]
import bigints

func sqrt(a: BigInt): Option[BigInt] =
  if a < 0'bi:
    none(BigInt)
  else:
    # Approximate BigInt as z = x * 2^(2y)
    # (0 ≦ x < 2^62, y ∈ N)
    # Then sqrt(z) = sqrt(x) * 2^y.

demotomohiro

# This program calculate an automorphic number.
# 何乗しても下N桁が同じになる数(自己同形数 Automorphic number)を計算して出力します。
#
# How to compile and run
# 1. Install Nim (https://nim-lang.org/install.html)
# 2. $ nimble refresh
# 3. $ nimble install cligen
# 4. $ nimble install https://github.com/demotomohiro/bigints@#add-per-bit-op
# 5. $ nim c -d:danger --passC:-flto --passL:"-flto -s" amn.nim
# 6. $ ./amn run --numDigits=10000 > result.txt

demotomohiro

import std/[strformat, strutils, bitops]
import pixie, chroma

# define `nort` when opengl or windows system is not available.
when not defined(nort):
  import nimgl/[glfw, opengl]

proc `{}`(image: var Image, x, y: int): var ColorRGBX =
  ## Accessing any pixels outside the bounds of the image is error
  when not defined(danger):

demotomohiro

## Visualize how Pseudo-random number generators created
## with jump function and with random seed use PRNG state space.
## Install pixie with `nimble install pixie`

import std/[strformat, random]
import pixie

const
  numRows = 32
  numColumns = 64

demotomohiro

import os

proc execQuote(args: varargs[string]) =
 args.quoteShellCommand.exec

proc download(url, dist: string) =
  mkDir dist.parentDir
  execQuote "wget", url, "-O", dist

proc untar(src, dist: string) =