Page 78 - JavaScript
P. 78
for(var i = v; i > 0; i --){
r += Math.random();
}
return r / v;
}
The image shows the distribution of random values for different values of v. The top left is
standard single Math.random() call the bottom right is Math.random() summed 8 times. This is from
5,000,000 samples using Chrome
This method is most efficient at v<5
Ceiling and Floor
ceil()
The ceil() method rounds a number upwards to the nearest integer, and returns the result.
Syntax:
Math.ceil(n);
Example:
console.log(Math.ceil(0.60)); // 1
console.log(Math.ceil(0.40)); // 1
console.log(Math.ceil(5.1)); // 6
console.log(Math.ceil(-5.1)); // -5
console.log(Math.ceil(-5.9)); // -5
floor()
The floor() method rounds a number downwards to the nearest integer, and returns the result.
Syntax:
Math.floor(n);
Example:
console.log(Math.ceil(0.60)); // 0
console.log(Math.ceil(0.40)); // 0
console.log(Math.ceil(5.1)); // 5
https://riptutorial.com/ 35
