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Questions tagged [clamp]

Constrains a value between a lower and upper bound. Use this tag when working with a clamp() function in the languages that support it. Not to be confused with CLAMP Toolkit (Clinical Language Annotation, Modeling, and Processing).

In computer terms, to clamp a value is to make sure that it lies between some maximum and minimum values. If it’s greater than the max value, then it is replaced by the max, etc.

Clamp documentation links based on native language support:

.NET -> https://learn.microsoft.com/en-us/dotnet/api/system.math.clamp?view=netcore-3.1

C++ -> https://en.cppreference.com/w/cpp/algorithm/clamp

CSS -> MDN ; CSS Values

R -> (raster package) https://www.rdocumentation.org/packages/raster/versions/3.3-13/topics/clamp

Ruby -> (Comparable package) https://ruby-doc.org/core-2.7.0/Comparable.html#method-i-clamp

Rust -> https://docs.rs/num/0.2.1/num/fn.clamp.html

Many languages, such as C, Haskell, Java, JavaScript, PHP, Python, and Raku (Perl 6) do not have a native clamp implementation. Workarounds, custom implementations, or native feature extensions for a given language can typically be found by searching for "clamp in " here on Stack Overflow.

Not to be confused with the CLAMP Toolkit (Clinical Language Annotation, Modeling, and Processing).

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How does a clamp function in glsl and opencl work? does it use create branches? and should I avoid using it?

Both GLSL and OpenCL have a clamp function that will clamp a number to the upper or lower bound inserted if the value exceeds the bounds. If I were to try and implement something like this in C++ it would look like the following code: if(i < min){ …
Hasan Al-Baghdadi
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Clamp variable within range

Given two values x and b, I want a function to clamp x to fall within [-b, b]. In particular: If x is less than or equal to -b, then the function returns -b; If x is greater than -b and less than b, then the function returns x; If x is greater than…
LaTeXFan
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Problems limiting object rotation with Mathf.Clamp()

I am working on a game that rotates an object on the z axis. I need to limit the total rotation to 80 degrees. I tried the following code, but it doesn't work. minAngle = -40.0f and maxAngle = 40.0f Vector3 pos = transform.position; pos.z =…
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Increase font size when viewport width decreases

I would like to know if there is a CSS command allowing to increase the font size when the viewport width becomes smaller (like a reverse clamp method). In fact, I want to do the opposite of what clamp does (as the first entry is the MIN value). I…
Dhalsim
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Mathf.clamp() function in Unity

I have a Cube(Player) in my game scene. I have written a C# script to constrain the movement(using Mathf.Clamp()) of the Cube so it does not leave the screen. Below is my FixedUpdate() method from the Script private void FixedUpdate() { …
ray an
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Mathhelper.Clamp not exact?

I'm running into an issue while using Mathhelper.Clamp in a game I'm working on. Here's a snippet of the code that's causing me problems: if (background.position.Y == 0) { player.position.Y = MathHelper.Clamp(player.position.Y, 0,…
Andrux51
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How to properly use and understand ch units for width in CSS

I've recently in the last week come across a new CSS unit "ch" I haven't seen it before in any of the tutorials I've taken or websites I've inspected and have tried to look up information regarding it but honestly, there seems to be such little info…
TherealMIST
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Why std::clamp changed how comparison is done in C++20?

There is interesting note on C++ reference for first overload of std::clamp(one that does not take custom comparator). Uses operator< (until C++20) std::less<> (since C++20) to compare the values. All I found on cppreference is this (about…
NoSenseEtAl
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How to convert Uint8ClampedArray to image without using DOM functions?

TL/DR: How to convert Uint8ClampedArray with RGBA values to an image without using DOM (canvas element) or OffscreenCanvas? I'm looking for a way to convert a Uint8ClampedArray object, which holds RGBA values, to a valid Blob object or a Blob URL…
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Width clamp(MIN, VAL, MAX) not behaving same as max(MIN, min(VAL, MAX)) where VAL = 100% and MIN/MAX are absolute values

Context I interpret clamp(MIN, VAL, MAX) to mean: Aim for VAL unless it exceeds MAX or falls below MIN. When applied to WIDTH of text, my understanding is that the text element will take 100% of the container width unless it falls below MIN or…
gabrimo
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How do I clamp __m128i signed integers into non-negative unsigned integers in SSE

I can't figure out how to convert 4 x 32 bit signed integers stored in a single __m128i into "unsigned" counterparts. The conversion should be done with value truncation, clamping negative numbers to 0 but leaving non-negative numbers…
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AVX2 equivalent of std::clamp

Given a precision p between 1 and 16, I would like to clamp an AVX2 integer register between -p/2 and p/2. I currently do this with std::clamp on non-AVX2 integers. Is there a way of doing this with AVX2?
Jacko
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How to clamp z rotation of a gameobject using touch input in unity without creating a jitter on y rotation

I am able to clamp the z rotation of my game object using the code below, but it always changes the y rotation on my first touch. I only want to rotate the z-axis. private float zRotation; public void RotateMove() { zRotation -=…
Seve
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Add Listener to Diff Clamp, React Native

Trying to add a listener to an Animated Diff Clamp in react native to allow the changing of a couple of non animated properties as well. It initially performs correctly but throws an "illegal node" error when the screen scrolls beyond its max…
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How to perform row-wise clipping of a matrix in Eigen?

I need to clip (i.e. clamp) elements in every row of a matrix. Each column has its minimum and maximum specified in a two-row matrix (in first row there are minimums, in the second row there are maximums). I'm currently using this ugly approach to…
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