>>> 3/2
1.5
>>> 3//2 # floor
1
>>> -(-3//2) # ceil
2
GeeksforGeeks
geeksforgeeks.org › python › floor-ceil-function-python
floor() and ceil() function Python - GeeksforGeeks
Example: floor() of 3.3 will be 3. ceil(): Rounds a number up to the nearest integer. Example: ceil() of 3.3 will be 4. Note: Both functions require importing the math module: import math ...
Published January 16, 2026
Top answer 1 of 5
88
>>> 3/2
1.5
>>> 3//2 # floor
1
>>> -(-3//2) # ceil
2
2 of 5
14
Try
def ceil(n):
return int(-1 * n // 1 * -1)
def floor(n):
return int(n // 1)
I used int() to make the values integer. As ceiling and floor are a type of rounding, I thought integer is the appropriate type to return.
The integer division //, goes to the next whole number to the left on the number line. Therefore by using -1, I switch the direction around to get the ceiling, then use another * -1 to return to the original sign. The math is done from left to right.
Why do Python's math.ceil() and math.floor() operations return floats instead of integers? - Stack Overflow
Why would .ceil and .floor return floats when they are by definition supposed to calculate integers? ... Well this got some very good arguments as to why they should return floats, and I was just getting used to the idea, when @jcollado pointed out that they in fact do return ints in Python 3... More on stackoverflow.com
what is the difference between using math.ceil and round for rounding the decimal ?
ceil always rounds up. More on reddit.com
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October 10, 2022[Python] Not able to round up despite having the Math.ceil function
Not too familiar with HTML and how the tags work there (but from what I'm guessing is the same SO thread you found, you seem to have the right idea). But if it's complaining on python's side, you could simply just do a round(float(form[nameOfInput]), 2). In this example, that will round 154.456 to 154.46. But that depends on if it's Flask that's complaining or the HTML complaining (again, I never work with HTML so I'm not sure where the complaint is coming from lol) More on reddit.com
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July 14, 2024binary search ceiling and floor of number
I've stopped having difficulty with binary search since I adopted the following general strategy: The goal is to split all indices into 2 categories. For example the category arr[i] <= key and the category arr[i] > key. [start, end) is always the (half open) range of indices for which we don't know in which category they are. At the end we just need to decide if we need the largest element of the left category or the smallest element of the right category and return either arr[start-1] or arr[start] based on that. I'm not entirely sure what you mean by ceiling and floor. More on reddit.com
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October 9, 2022Videos
Python ceil and floor Functions | Round Your Numbers Up Or Down ...
06:22
Python - Ceil() Floor() Math Method Code Practice - YouTube
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Python ceil() , floor() and round() functions| Python Math Functions| ...
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ceil( ) and floor( ) functions in python math library - YouTube
Naukri
naukri.com › code360 › library › ceil-and-floor-in-python
ceil() and floor() in Python - Naukri Code 360
August 22, 2025 - Almost there... just a few more seconds
Epoch Converter
epochconverter.com › daynumbers
What's the Current Day Number?
2 days ago - on mouseUp answer DayOfYear() end mouseUp function DayOfYear put the short date into currentDate convert currentDate to dateItems --list of date elements separated by commas put item 1 of currentDate into year put item 2 of currentDate into month put item 3 of currentDate into day put floor (275 * month / 9) into N1 put floor ( (month + 9) / 12) into N2 put (1 + floor ( (year - 4 * floor (year / 4) + 2) / 3) ) into N3 put N1 - (N2 * N3) + day - 30 into N return N end DayOfYear function floor pNumber -- LiveCode has no built-in floor() function put Round (pNumber) into theInteger if theInteger
Analytics Vidhya
analyticsvidhya.com › home › understanding floor and ceiling functions in python
Floor and Ceiling Functions in Python | Applications and Behaviour
June 20, 2023 - This leads to the rather amazing result relating sums of the floor function of multiples of to the continued fraction of by · The smallest integer bigger than or equal to ⌈x⌉ is the result of the ceil function, denoted by ceil(x) or x. A given ...
W3Schools
w3schools.com › python › ref_math_ceil.asp
Python math.ceil() Method
# Import math library import math ... print(math.ceil(10.0)) Try it Yourself » · The math.ceil() method rounds a number UP to the nearest integer, if necessary, and returns the result....
Python
docs.python.org › 3 › library › math.html
math — Mathematical functions
2 weeks ago - Added in version 3.8. ... Return the ceiling of x, the smallest integer greater than or equal to x. If x is not a float, delegates to x.__ceil__, which should return an Integral value.
Note.nkmk.me
note.nkmk.me › home › python
Round Up/Down Decimals in Python: math.floor, math.ceil
January 15, 2024 - In Python, math.floor() and math.ceil() are used to round down and up floating point numbers (float). Round down (= take the floor): math.floor() Round up (= take the ceiling): math.ceil() Difference ...
Career Karma
careerkarma.com › blog › python › python ceil and floor: a step-by-step guide
Python Ceil and Floor: A Step-By-Step Guide | Career Karma
December 1, 2023 - Certifications: Compared ... The Python ceil() function rounds a number up to the nearest integer, or whole number. Python floor() rounds decimals down to the nearest whole number.
Top answer 1 of 9
121
As pointed out by other answers, in python they return floats probably because of historical reasons to prevent overflow problems. However, they return integers in python 3.
>>> import math
>>> type(math.floor(3.1))
<class 'int'>
>>> type(math.ceil(3.1))
<class 'int'>
You can find more information in PEP 3141.
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108
The range of floating point numbers usually exceeds the range of integers. By returning a floating point value, the functions can return a sensible value for input values that lie outside the representable range of integers.
Consider: If floor() returned an integer, what should floor(1.0e30) return?
Now, while Python's integers are now arbitrary precision, it wasn't always this way. The standard library functions are thin wrappers around the equivalent C library functions.
Medium
medium.com › @kevingxyz › the-art-of-pythons-ceiling-and-floor-notation-684d4d354e1e
The Art of Python’s Ceiling and Floor using Operator | by Kevin | Medium
August 8, 2020 - In Python, the floor function rounds the value towards negative infinity. By playing on this principle, you will realize that by taking the negative of negative floor, can do something like this: ... In the above code, you will be getting 4. ...
TechGeekBuzz
techgeekbuzz.com › blog › floor-and-ceil-function-in-python
floor() and ceil() function in Python - Techgeekbuzz
There are two math methods, namely math module .ceil() and .floor(), that are used to round floating numbers to integers and whole numbers in Python . While working with Python, you will be using these two methods often.
CodeChef
codechef.com › roadmap › cpp-dsa
C++ DSA Roadmap – Learn Data Structures & Algorithms
Begin your journey into C++ data structures and algorithms with this comprehensive roadmap. Start with basic constructs—such as arrays, strings, stacks, and queues—then progress into advanced topics like trees, graphs, dynamic programming, and bit manipulation.
Scaler
scaler.com › home › topics › math floor python
Math Floor Function in Python - Scaler Topics
May 4, 2023 - Tip: For rounding up the number to the nearest integer, we can use math.ceil() function. We have many ways to use the math floor Python. First, we can simply import the math module using import math, and then we can use the math floor Python function by writing math.floor().
AskPython
askpython.com › home › is there a ceiling equivalent of // operator in python?
Is There a Ceiling Equivalent of // Operator in Python? - AskPython
May 25, 2023 - If you’re a beginner in programming ... ‘//’ operator or floor division operator. The // operator is used to divide an integer and then round off its value to its floor value. Have you thought that there’s no equivalent of ...
Career Endeavour
careerendeavour.com › wp-content › uploads › 2025 › 11 › KVS-NVS-PGT-COMPUTER-SCIENCE-SYLLABUS.pdf pdf
TIER II : Syllabus PGT (Computer Science) Computer Systems and Organisation
Introduction to Python modules: Importing module using 'import ' and using from · statement, Importing math module (pi, e, sqrt, ceil, floor, pow, fabs, sin, cos, tan); random
W3Schools
w3schools.com › python › module_math.asp
Python math Module
Python has a built-in module that you can use for mathematical tasks. The math module has a set of methods and constants.
PyTorch
docs.pytorch.org › reference api › torch.tensor
torch.Tensor — PyTorch 2.10 documentation
A tensor can be constructed from a Python list or sequence using the torch.tensor() constructor: >>> torch.tensor([[1., -1.], [1., -1.]]) tensor([[ 1.0000, -1.0000], [ 1.0000, -1.0000]]) >>> torch.tensor(np.array([[1, 2, 3], [4, 5, 6]])) tensor([[ 1, 2, 3], [ 4, 5, 6]]) ... torch.tensor() always copies data. If you have a Tensor data and just want to change its requires_grad flag, use requires_grad_() or detach() to avoid a copy.
LeetCode
leetcode.com › problems › search-in-a-binary-search-tree
Search in a Binary Search Tree - LeetCode
Can you solve this real interview question? Search in a Binary Search Tree - You are given the root of a binary search tree (BST) and an integer val. Find the node in the BST that the node's value equals val and return the subtree rooted with that node. If such a node does not exist, return null.