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void decompose(float* a, float* l, float* u, int n) {
  for (int i = 0; i < n*n; i++) {
    l[i] = u[i] = 0;
  }
  
  for (int i = 0; i < n; i++) {
    l[i*n+i] = 1;
  }

  for (int i = 0; i < n; i++) { // row index

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#!/bin/sh

# Please install non-optional dependencies noted on this site:
# https://wiki.osdev.org/GCC_Cross-Compiler

# Compiler Configuration
CROSS_TARGET=x86_64-elf
GCC_VERSION="8.1.0" # GCC version
BIN_VERSION="2.30"  # Binutils version

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#include <stdio.h>
#include <stdint.h>
#include <math.h>
#include <complex.h>

#ifndef M_PI
#define M_PI (3.14159265358979323846)
#endif

/* Permutation */

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#include <stdio.h>
#include <stdint.h>

/*
a mod n = r
a = p * q

p = an+x
q = bn+y

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// Windows 10 supports ANSI color code sequences, however they need to be enabled
// and apparently MinGW/MinGW-w64 doesn't support set the required STDOUT flag yet. This code enables ANSI VT processing
// on MinGW compilers however it hasn't been tested on older Windows systems yet which do not have that flag.
// So if you use this in production code you probably have to check if the platform is Windows 10.

#include <stdio.h>

#ifdef __MINGW32__
#define NEED_COLOR_FIX
#endif