The log() function in p5.js is used to get the natural logarithm (of base “e”) of any number taken as input for the parameter of log() function.
Syntax:
log(x)
Parameters: This function accepts a single parameter x which is any number greater than zero (0) taken as the input whose natural log is going to be calculated.
Return Value: It returns the natural log of any input number greater than zero (0).
Below program illustrates the log() function in p5.js:
Example: This example uses log() function to get the natural log value of any input number.
Javascript
function setup() { // Create Canvas of size 270*80 createCanvas(550, 130); } function draw() { // Set the background color background(220); // Initialize the parameter let a = 5; let b = 7.7; let c = 0; let d = -5; // Call to log() function let v = log(a); let w = log(b); let x = log(c); let y = log(d); // Set the size of text textSize(16); // Set the text color fill(color('red')); // Getting natural log value text("Natural logarithm value of 5 is : " + v, 50, 30); text("Natural logarithm value of 7.7 is : " + w, 50, 50); text("Natural logarithm value of 0 is : " + x, 50, 70); text("Natural logarithm value of -5 is : " + y, 50, 90); } |
Output:
Note: If we take input as a negative value and zero then it returns the output as “NaN” and -Infinity respectively.
Reference: https://p5js.org/reference/#/p5/log
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