Static p5_sys::global::exp

pub static exp: ExpInternalType

Returns Euler's number e (2.71828...) raised to the power of the n parameter. Maps to Math.exp().

Examples

function draw() {
  background(200);

  // Compute the exp() function with a value between 0 and 2
  let xValue = map(mouseX, 0, width, 0, 2);
  let yValue = exp(xValue);

  let y = map(yValue, 0, 8, height, 0);

  let legend = 'exp (' + nfc(xValue, 3) + ')\n= ' + nf(yValue, 1, 4);
  stroke(150);
  line(mouseX, y, mouseX, height);
  fill(0);
  text(legend, 5, 15);
  noStroke();
  ellipse(mouseX, y, 7, 7);

  // Draw the exp(x) curve,
  // over the domain of x from 0 to 2
  noFill();
  stroke(0);
  beginShape();
  for (let x = 0; x < width; x++) {
    xValue = map(x, 0, width, 0, 2);
    yValue = exp(xValue);
    y = map(yValue, 0, 8, height, 0);
    vertex(x, y);
  }

  endShape();
  line(0, 0, 0, height);
  line(0, height - 1, width, height - 1);
}

Parameters

n exponent to raise