vrbadev

#include "md5.h"
 
const uint32_t r[] = {7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22,
                5,  9, 14, 20, 5,  9, 14, 20, 5,  9, 14, 20, 5,  9, 14, 20,
                4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23, 4, 11, 16, 23,
                6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21, 6, 10, 15, 21};

const uint32_t k[] = {
    0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
    0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,

vrbadev

#include "lib_math_vectors.h"

// Simplifies math power function
double pow2(double x) { return pow(x, 2); }

// Sigmoidal function
double sigmoid(double x) { return 1.0 / (1.0 + exp(-x)); }

// ReLU function
double relu(double x) { return fmax(0.0, x); }

vrbadev

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

float pwr2(float x)
{
    return x * x;
}

float inv_sqrt(float number)
{

vrbadev

def flatten(*parents, dtype=tuple):
    # internally, lists are used because they can be easily merged and expanded
    result = list()
    for i in range(len(parents)):
        try:
            # if i-th element iterable, use recursion to flatten all its elements and merge the result with current return list
            result.extend(flatten(*parents[i], dtype=list))
        except TypeError: 
            # if not iterable, add the element to return list
            result.append(parents[i])

vrbadev

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/sched.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/init.h>
#include <linux/device.h>

vrbadev

How to make a debian from a ROS package

The instructions are based on this answers.ros.org thread.

Get dependencies

You may need the latest pip, follow the official instructions.

Install bloom:

vrbadev

Tutorial: How to install ROS Noetic on Debian 12 Bookworm

This is a short tutorial on building ROS Noetic in the Debian 12 ("bookworm") fresh-install environment. There are several packages not available (yet) from the official apt repositories, which have to be either built from source or installed from older Debian 11 ("bullseye") repository DEB packages. Several packages also have to be downgraded to maintain compatibility.

Preparation

1. Add ROS repository for older Debian 10 ("buster") to our apt sources list:

sudo sh -c 'echo "deb http://packages.ros.org/ros/ubuntu buster main" > /etc/apt/sources.list.d/ros-latest.list'
sudo apt-key adv --keyserver 'hkp://keyserver.ubuntu.com:80' --recv-key C1CF6E31E6BADE8868B172B4F42ED6FBAB17C654

vrbadev

# -*- coding: utf-8 -*-
"""
Created on Sat Sep 23 14:04:42 2023
@author: Vojtech Vrba ([email protected])

Simple Python script which gathers all available Bitstamp OHLC data for selected trading pair and interval.
The data is stored in a new CSV file / only new data is appended to the end of an existing CSV file.
"""

import datetime as dt

vrbadev

from pathlib import Path
from rosbags.highlevel import AnyReader
from contextlib import nullcontext
from tqdm import tqdm


# aux function to get a list of all rosbag topic names
def rosbag_topics(bag_path):
    with AnyReader([Path(bag_path)]) as reader:
        return reader.topics

vrbadev

import signal


if __name__ == "__main__":
    terminated = False
    signal.signal(signal.SIGINT, lambda sig, frame: globals().update(terminated=True))
    
    while not terminated:
        # do something ...