Static p5_sys::global::sqrt

pub static sqrt: SqrtInternalType

Calculates the square root of a number. The square root of a number is always positive, even though there may be a valid negative root. The square root s of number a is such that s*s = a. It is the opposite of squaring. Maps to Math.sqrt().

Examples

function draw() {
  background(200);
  let eSize = 7;
  let x1 = mouseX;
  let y1 = 80;
  let x2 = sqrt(x1);
  let y2 = 20;

  // Draw the non-squared.
  line(0, y1, width, y1);
  ellipse(x1, y1, eSize, eSize);

  // Draw the squared.
  line(0, y2, width, y2);
  ellipse(x2, y2, eSize, eSize);

  // Draw dividing line.
  stroke(100);
  line(0, height / 2, width, height / 2);

  // Draw text.
  noStroke();
  fill(0);
  let spacing = 15;
  text('x = ' + x1, 0, y1 + spacing);
  text('sqrt(x) = ' + x2, 0, y2 + spacing);
}

Parameters

n non-negative number to square root