rand
nalgebra
rand | nalgebra | |
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29 | 20 | |
1,577 | 3,743 | |
1.1% | 1.4% | |
8.3 | 7.8 | |
2 days ago | 2 days ago | |
Rust | Rust | |
GNU General Public License v3.0 or later | Apache License 2.0 |
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rand
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We have getrandom at home
Making compatibility promises for distributions means they cannot take advantage of potential advancements in the field.
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Blog Post: On Random Numbers
Defining an error type that is meaningful, portable, and compatible with no-std isn't straightforward. If the std lib's getrandom requires std, then just like that, rand and many other crates won't use it anyway. Using io::Result seems to me to face this challenge.
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Hey Rustaceans! Got a question? Ask here (52/2022)!
Some wasm targets can’t generate random numbers at all but in the case of the book because you are using wasm in a browser you can use JS to generate random numbers. I believe there’s a way to get the rand crate to use JS as the backend for generating rand but its a bit more convoluted than the easy one-liner that the book suggests.
- Data-driven performance optimization with Rust and Miri
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What crates are considered as de-facto standard?
rand
- Why Rust?
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[Media] Nebulabrot rendered with Rust — Explanations in the comments
This uses rand and xcomplex to handle the mathematics, png to write image files, and dialoguer and indicatif for some pretty prompts and progress bars.
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Do you ever use unsafe { .. } when not implementing custom data structures or interacting with external C code?
You can often achieve this without any unsafe by putting an assert!() on the length before the hot loop. For example, I got rid of some unsafe in rand that way.
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Original source of `(seed * 9301 and 49297) % 233280` random algorithm?
This is a widely used method to map random integers to floating point numbers, but it has the disadvantage of wasting 1 bit of float mantissa precision.
On modern CPUs, its computational advantage over full-precision mapping methods, such as multiplication by a float, is not always clear [1].
[1] https://github.com/rust-random/rand/issues/416
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Any plans for built-in support of Vec2/Vec3/Vec4 in Rust?
In fact, there are a lot of crates in Rust where in other programming languages, it would be included in the standard library. Examples are regex, random number generators, additional iterator methods, macros for other collections, num traits, loggers, HTTP libraries, error handling, async runtimes, serialization and deserialization, date and time, and many more.
nalgebra
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Xkcd 2916: Machine
Ok, so this uses https://rapier.rs/ which is very cool
Rapier, alongside https://nalgebra.org/ (which it uses underneath) has seriously good documentation and some advanced features like cross-platform determinism (something made hard by the way floating point differs between platforms)
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Geometric Algebra to Geometric Computing Software Developers
> Some GA libraries[1][2] define types for the different kind of objects (grades)
That's nice!
This reminds of me things like, linear algebra libraries that will type-check matrices so that a 2x2 matrix can't be added to a 2x3 matrix (but then you can have a dynamic matrix that will error only in runtime), like https://nalgebra.org/ and others.
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Has anyone worked on a math library before?
Maybe start by looking at https://nalgebra.org/ to see what rust math libraries might look like
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faer 0.8.0 release
And Nalgebra, while better, also seems to have slowed down on commits and responses to issues and PRs. I have a PR there for a relatively simple wrapper type for row vectors which was explicitly requested by a maintainer, which hasn't even gotten a comment since for two weeks.
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A Rust client library for interacting with Microsoft Airsim https://github.com/Sollimann/airsim-client
nalgebra (similar to Eigen in cpp)
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What crates are considered as de-facto standard?
nalgebra
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Science-related crates that I should have a look at?
nalgebra is for linear algebra.
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Hey Rustaceans! Got a question? Ask here! (31/2022)!
Take a look into math libraries, like glam, nalgebra, and cgmath. I've only used these through game engines, though, so I can't offer per-basis reviews/advice.
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C++ is making me depressed / CUDA question
If you do not need GPU then I would recommend looking into Eigen in C++, nalgebra in Rust (with a BLAS in both cases for improved performance) or one of the above options (Julia / Python+JAX).
- Lightning talk: Stop writing Rust
What are some alternatives?
fastrand - A simple and fast random number generator
cgmath-rs - A linear algebra and mathematics library for computer graphics.
fast-float-rust - Super-fast float parser in Rust (now part of Rust core)
rust-ndarray - ndarray: an N-dimensional array with array views, multidimensional slicing, and efficient operations
winapi-rs - Rust bindings to Windows API
glam-rs - A simple and fast linear algebra library for games and graphics
yew - Rust / Wasm framework for creating reliable and efficient web applications
rust-blas - BLAS bindings for Rust
cargo-fuzz - Command line helpers for fuzzing
rulinalg - A linear algebra library written in Rust
rust - Rust for the xtensa architecture. Built in targets for the ESP32 and ESP8266
scirust - Scientific Computing Library in Rust