SyntaxShelf

Ceil

2 snippets across 2 stacks - JavaScript, Python

JSJavaScript

Rounding

JS · Numbers & Math
Syntax
Math.round(n) | Math.floor(n) | Math.ceil(n) | Math.trunc(n)
Example
const price = 19.872;
console.log(Math.round(price));  // 20
console.log(Math.floor(price));  // 19
console.log(Math.ceil(price));   // 20
console.log(Math.trunc(price));  // 19
console.log(Math.trunc(-3.7));   // -3 (not -4)

Note trunc() simply removes decimals (towards zero). floor() rounds towards negative infinity. They differ for negative numbers: floor(-3.2) = -4 but trunc(-3.2) = -3.

PYPython

math Module Essentials

PY · Numbers
Syntax
import math
Example
import math
print(math.ceil(4.2))
print(math.floor(4.8))
print(math.sqrt(144))
print(math.log(100, 10))
print(math.pi)
Output
5
4
12.0
2.0
3.141592653589793

Note math functions work on ints and floats but not on complex numbers. Use cmath for complex math operations.

Frequently asked questions

How does JavaScript handle ceil?
This task is covered in 2 stacks on this page: JavaScript, Python. The "Rounding" snippet in JavaScript uses `Math.round(n) | Math.floor(n) | Math.ceil(n) | Math.trunc(n)`.
Which code does the JavaScript example use?
The "Rounding" snippet uses `Math.round(n) | Math.floor(n) | Math.ceil(n) | Math.trunc(n)`, from the Numbers & Math section of the JavaScript cheat sheet.
Which stacks cover "ceil" on this page?
JavaScript, Python. Together they hold 2 copy-ready snippets for this task.
Is there anything to watch out for?
Yes. For "Rounding": trunc() simply removes decimals (towards zero). floor() rounds towards negative infinity. They differ for negative numbers: floor(-3.2) = -4 but trunc(-3.2) = -3.

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