Is there a strictly conforming way to get a bit-pattern of all ones for an integer in C, without relying on implementation-defined behavior? On many architectures I can expect -1 and the UINT_MAX family to give such a bit pattern; how portable is this assumption? >Solution : Extremely portable. The C23 standard disallows integer representations… Read More Standard way of getting a bit pattern of all ones
I’m learning about bit packing and bit buffers and I came across this line of code int NumBits = sizeof(float) << 3 now the output is correct, a float is 4 bytes and when you convert that to bits it’s 32 bits, which is the value of NumBits my question is how did bit shifting… Read More How does bitshifting to the left by 3 gives you the number of bits in bytes?
I’ve found such numbers time and time again in verilog and digital logic exercises, but I don’t know how I’m supposed to know what number this is or how to write it as 12’b in verilog code. Can someone explain them to me? >Solution : Presumably it’s a 12-bit value in hexadecimal notation. Since one… Read More How do I find what number is 12h06f?
I am writing a simple function to check the 1’s compliment of a floating number. This is the code I have written to verify the value: #include <stdio.h> #include <stdint.h> int main() { float input = 25.456; printf("input val = %f\n",input); uint32_t temp = (uint32_t)input; uint32_t toggleval = ~temp; uint32_t checker = ~toggleval; float output… Read More Why 1's complement of float variable is not appropriate?
What is the formula for calculating the number of bits in a byte? What external resources can I find more information? >Solution : There are 8 bits in a byte. Check here for more information. Please do research before posting a question. This could have been easily googled.
This is a sample code to Count the Number of Digits in an Integer with java class CountDigits { private static int countDigits(int n){ return n != 0 ? ((int) Math.floor(Math.log10(n) + 1)) : -1; } public static void main(String[] args) { int number = 125; System.out.println("Number of digits : " + countDigits(number)); } }… Read More Java Count the Number of Digits in an Integer
I have an array of arrays as so: $bookPages = array( "page-1-name" => array( "page_title" => "Search results", "page_name" => "search" ) , "page-2-name" => array( "page_title" => "Front Cover | HCDP", "page_name" => "cover" ) ) I am looping through to get the content each array like the "page_title" using a foreach. foreach (… Read More How to get the name of each array as you loop through an array of arrays php
I have an image of a color scale I filter out the actual color scale by using import cv2 import numpy as np colorbar = cv2.imread(‘colorbar-scheme-elevation.png’, cv2.IMREAD_UNCHANGED) colorbar = cv2.cvtColor(colorbar, cv2.COLOR_BGRA2BGR) hsv = cv2.cvtColor(colorbar, cv2.COLOR_RGB2HSV) lower_gray = np.array([0, 0, 0]) upper_gray = np.array([255, 10, 255]) mask = cv2.inRange(hsv, lower_gray, upper_gray) mask = cv2.bitwise_not(mask) res =… Read More Recreate colormap based on colorscale in matplotlib
I’m just starting to learn Java and I just got to the if-else-else if statements section on CodeAcademy. I tried using the if else statement in a method, but I’m not receiving the variable value when I call it, only the if-else statement. I’m guessing this is a very small mistake. (This is my first… Read More if-else-else if statements in Java (codecademy)
I have two python lists: a_list = [1, 2, 3] b_list = [4, 5, 6] How can I do the following: create new text file —> convert lists to json string —> write lists into the file (each list should have its own line in the file) —> open the file —> read each line… Read More How to write multiple lists into a text file where each list is written into a new line?