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Explore all Architecture open source software, libraries, packages, source code, cloud functions and APIs.

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Trending Kits in Architecture

csharp-android-architecture

9 best C# Android architecture

If you are using C#, one of the best ways to get started is by using an Android library. There are many Android libraries available for use with C#. One such library is MvvmCross, which provides a cross-platform, event-driven architecture for building native and hybrid mobile apps. It includes the MVVM pattern for encapsulating data flow between views and the ViewModel layer that mediates business logic between those components. The library aims to provide a simple way to build Android and iOS apps using the same code base. xamarin-android is an open source library for building Android apps using Xamarin.Forms and C#. The library allows you to use native UI elements in your Xamarin.Forms UIs without having to modify them or write any code that interacts with native elements directly. TouchScript provides a complete solution for developers who want to create touch-enabled mobile apps with no additional development effort required beyond building their app's user interface (UI). LottieXamarin provides a set of tools that help you build beautiful animations on Android, iOS and Xamarin platforms, including advanced features like interpolation, shape tweening and more.

go-microservice

10 best Go Microservice

Go microservices are small, single-purpose services that can be independently deployed and scaled. This approach is often used in applications that need to scale well, such as production systems or web applications. One of the biggest advantages of using Go microservices libraries is that you get better performance and reliability than you would by writing your own code. You also avoid the maintenance overhead of managing a monolithic application. Kratos is an open source library that implements Erlang actor framework in Go. Actor-model based systems are one of the most popular patterns for building distributed systems. Actors are lightweight processes that communicate with each other via message passing, which makes them very scalable and durable. Kratos provides an implementation of Erlang actors for Go so you can easily build high performance, reliable systems on top of it. Nomad is another open source library that implements Erlang actor framework in Go and works with kubectl to manage your cluster from within your program code. Nomad supports all kinds of clusters (mock, test) but its main goal is to provide a consistent interface between operations that want a cluster (e.g., Kubernetes). Popular open source Go microservice libraries include:

javascript-pwa

10 best JavaScript PWA

The JavaScript PWA libraries provide a way to build a Progressive Web App that can be delivered using the same ways as any other website, on the web and in apps. The use of JavaScript PWA libraries like workbox, next-pwa, pwa-studio, sample-media-pwa helps in making your client application faster and easier to use. It has its own advantages over vanilla JavaScript applications. The biggest advantage is that it gives your web application an instant user experience without any plugin or external dependency. Using such libraries also let you add more features in your application without worrying about how much it would take to build them in your codebase. They use modern technologies such as Service Workers, Push Notifications and Offline capabilities that help users stay connected even when they're not connected to the Internet. Workbox is a JavaScript PWA library for building responsive, offline capable, progressive web apps with minimal effort and zero boilerplate code. It supports server side rendering (SSR), a technique which allows clients to update at runtime by sending new content from the server rather than having the client wait for it to download each time the page loads. The Next-PWA library is an open source JavaScript framework that supports Progressive Web Apps (PWAs) and features useful features like offline support, push notifications, and more.

javascript-service-mesh

10 best JavaScript Service mesh

The use of JavaScript Service mesh libraries like rectangular, togetherjs, hypernova, seneca-mesh is a very common practice. This is because they are easy to install and configure. The libraries also make it easier to create applications that can scale to be distributed across the cluster. The service mesh acts as a mediator between services and performs operations like routing messages across multiple services in order to reduce latency and increase reliability. Rectangular is a Node.js library that provides a service mesh for AngularJS applications. It enables you to build distributed applications using JavaScript and Node.js. togetherjs is another open-source service mesh library for JavaScript services, which runs on top of Kubernetes (K8s). It uses the same API as Seneca-Meshes but with some additional features such as automatic configuration and auto-scaling. hypernova is an enterprise grade service mesh framework built on top of Kubernetes (K8s) and Docker. It provides a cloud native API with support for all major languages and frameworks, including Java, Python, Ruby, NodeJS, Go etc. There are several popular open-source JavaScript Service mesh libraries available for developers

javascript-ui-design

10 best JavaScript UI Design

We have a large selection of JavaScript UI Design libraries that make it easy to create beautiful and functional web interfaces. Our JavaScript UI Design library is the perfect choice when you need a web application or website built quickly. JavaScript UI Design libraries are very useful in creating dynamic and interactive web applications. These tools help you to build user interfaces for mobile, tablet, desktop and even for TV screens. UI design libraries are used mainly for developing the front-end of site, which is the part of a website that the users interact with instead of the back-end. These are libraries that help you build web interfaces, for example with CSS and HTML. They also help you create layouts, components and objects. Pencil is a JavaScript UI design library that allows you to rapidly prototype complex interfaces. It’s based on the principles of object-oriented programming and has a strong focus on component-based design. Stylo is a JavaScript UI design library used for creating web apps and websites. It allows you to quickly prototype and share designs with others without having to worry about front-end development specifics like CSS or HTML5. There are several popular open source JavaScript UI Design libraries available for developers

csharp-microservice

11 best C# Microservice

C# Microservice libraries are a way to break up large applications into smaller pieces that are easier to build and maintain. They offer many benefits in terms of scalability and fault tolerance. One of the most important benefits for microservices is the ability to scale easily on demand. It is much more difficult to scale an application when you have thousands of servers running on your network. With microservices, you can scale out individual services instead of scaling out your entire application. This means that you can add more capacity as needed without having to worry about over-provisioning or under-provisioning. The use of CAP, tye, surging libraries makes it easier to work with microservices. These libraries are heavily used and are based on the open-source framework called Capistrano (an automation tool). It allows you to create a deployment script and run it on a remote machine. The CAP pattern allows you to define an interface for your app with which other pieces of code can communicate. The TYE pattern defines an interface for the data that your app needs. Developers tend to use some of the following open source C# Microservice libraries:

java-microservice

11 best Java Microservice

It is very difficult to maintain a large monolithic application. It is also difficult to release new features and bug fixes. But using the Java Microservice libraries like apollo, nacos, armeria can easily solve these problems. The microservice approach has been around for a while now and is being used by many organizations to improve their efficiency, increase the speed of delivery and enhance the quality of their products. Apollo is an open source framework that provides efficient support for building fast and scalable distributed applications with a unified programming model. Apollo uses HTTP as its primary protocol and provides an HTTP client implementation that supports all of the major web browsers (including IE6) as well as other clients such as curl and wget. Apollo also supports streaming data using either Netty or GZIP compression for efficient high-volume data transfers over low bandwidth connections. Nacos is a lightweight library for building reactive asynchronous systems in Java SE 9+. The main purpose of NACOS is to provide a simple yet robust way to create asynchronous applications using Java SE 9+ functional interfaces with low overhead on thread creation overhead and/or blocking calls at the expense of some performance impact due to the need to manage threads yourself. Some of the most popular among developers are:

javascript-architecture

11 best JavaScript Architecture

JavaScript architecture libraries help you build better, reusable and testable code by providing you with an interface to various aspects of a computer system. They provide abstractions that allow you to build powerful apps without having to understand all the details of how they work underneath. The JavaScript architecture libraries clean-code-javascript and generator-jhipster help you write more maintainable JavaScript code. They also allow you to use more advanced features of the language. clean-code-javascript is a Javascript framework that helps developers write code that is easy to read, easy to maintain and easy to test. It provides abstractions on top of various parts of your application such as models, views, controllers, services etc. The library is used by thousands of developers across the world and has been downloaded more than 5 million times from its website. generator is a library for building custom generators for ES6+ syntax (including async/await). Jhipster is a powerful & extensible JavaScript library for working with HTML elements & CSS properties directly from your codebase. With Jhipster, you can write more efficient code by generating DOM elements and changes as you write them so you can focus on business logic instead of DOM manipulation. Generator-jhipster is a library for building custom generators for ES6+ syntax (including async/await). Popular open source JavaScript architecture libraries for developers include

javascript-microservice

11 best JavaScript Microservice

The use of JavaScript microservice libraries single-spa, moleculer, seneca is not only because it is easy to implement and maintain but also provides a high degree of flexibility. You can easily integrate microservice components into your existing application by using the API. For example, if you want to add a new feature in your application, you can use a JavaScript microservice library like moleculer to develop and test it. They help you to build a large scale application with very little effort, and they allow you to use all of the benefits of the JavaScript language. Moleculer is a JavaScript library that provides an easy and intuitive way to build an API. It is designed to be as simple as possible: it doesn't require an extensive configuration or setup process, but at the same time it allows you to build powerful APIs. Seneca is a lightweight microservice framework that simplifies building, deploying and managing apps. Seneca has recently been rewritten from scratch with Ember (and thus ember-cli), so it supports frontend development with Ember.js apps in addition to backend services with Node and Express (and now both). Some of the most widely used open source JavaScript microservice libraries among developers include:

php-ux

11 best PHP UX

PHP UX libraries are designed to make life easier for developers. They provide prebuilt components that can be combined together into complex user interfaces without having to worry about the underlying code behind each component. These libraries are often used in conjunction with other frameworks such as Symfony or Laravel (or any other framework that supports them). PHP UX libraries are a great way to help you get started with your design and development. Integrating these tools into your project will make it easier to create engaging user experiences and increase the overall efficiency of your work. ux-turbo is a lightweight library for creating UI components using Bootstrap 4.3 and Material Design guidelines. It also has a number of custom widgets like datepicker, card and more. customizr is is an open source framework that allows developers to quickly build beautiful, responsive websites with little code. The library makes it easy to customize any part of a website without having to touch the HTML or CSS code at all. It also comes with lots of useful Widgets like modals, popups and much more! You can find more info about customizr on their website here or check out their documentation page here . ux-dropzone is another simple library built on top of Bootstrap 4.3 and includes various UI components such as popovers, tooltips, buttons and much more! Popular open source PHP UX libraries for developers include

ruby-service-mesh

11 best Ruby Service mesh

The use of Ruby Service mesh libraries like chatwoot, portus, pact-ruby and synapse are becoming more and more important. These libraries provide a lot of features that can be used to build high-performance microservice architecture. Chatwoot is a service mesh library for the Ruby programming language that makes it easy to build and scale distributed applications. Chatwoot is an open source library that provides message queueing between services. It uses Kafka as its message store and offers secure message queueing with SSL encryption, as well as auto-failover and durable messages. Pact-ruby is a Ruby implementation of the Pact protocol for easily communicating with other systems. It also includes support for multiplexing multiple clients on one port and automatically scaling up or down as needed to handle traffic spikes or drops in load. Portus is a service mesh library for the Ruby programming language that makes it easy to build and scale distributed applications.Synapse is the first Ruby Service mesh library to provide an out of box solution for service mesh, allowing developers to focus on business logic rather than infrastructure concerns. Some of the most widely used open source Ruby Service mesh libraries among developers include

python-android-architecture

12 best Python Android architecture

Python Android architecture libraries like kivy, python-for-android, uiautomator2, waydroid are worth mentioning as they help in creating apps for Android phones. These libraries not only help you to create an app but also help in testing it on various devices like phones and tablets. Python is easy to learn and can be used for everything from small scripts to large web applications. Android architecture libraries are designed to make it easier for developers to build apps that run on Android devices. Kivy library provides support for building user interfaces in Python applications, along with full support for touch input. Python-for-Android library provides support for developing applications for the Android platform using Python wrappers around native APIs provided by the Android SDK. uiautomator2 library allows you to interact with the user interface of an application running on Android using uiautomator2, which is based on libinput2. It is a library for building user interfaces for touchscreen devices and GUIs in general, with an emphasis on mobile devices.Waydroid library allows you to interact with the user interface of an application running on Android using waydroid, which is based on libinput2. An API for creating cross-platform applications using C++, OpenGL ES 2.0, and OpenMAX AL API.

python-ui-design

12 best Python UI Design

The Python UI Design libraries pix2code, remi, pywinauto and pygubu allow you to create an interface in code and then have it converted into a GUI that can be used on your computer. Pix2code is a Python library for drawing UIs in the C++ programming language. pix2code is a simple but effective tool to generate a user interface from images. It does not require any backend or backend development. You can use it for both local and remote deployment. You just need to supply an image file as input and get an attractive output in minutes. It can be used to generate XAML files from Python code. Remi is a Python library for creating menus and toolbars that looks like native Windows menus and toolbars. Pywinauto is a Python library for creating UIs with no dependencies on third-party libraries such as PyQt or PySide . It relies heavily on the PyGTK graphical toolkit and also includes X11 (the default windowing system) support. It allows you to build your own widgets from scratch by extending the base Widget class. Pygubu is a command line tool (written in Python) that converts UI designs into native executables so that they can be run on any platform. Popular open source Python UI Design libraries include

csharp-service-mesh

13 best C# Service mesh

C# Service mesh libraries are a new way of building microservices. The idea is that you build your entire application as a series of services, and then use a service mesh to connect them together. The most common are Nancy and Winsw. But there are others like Hangfire and ServiceStack that have been gaining traction lately. One is not better than the other, but it's good to know what all the options are so you can make an informed decision about which one to use. Nancy is an open source project that provides a framework for monitoring microservices and orchestrating applications as they scale up or down in size. It provides features such as health checking and auto-discovery of services in your system. It also supports reactive messaging between client applications and services, which makes it a good choice if you want to build distributed systems with asynchronous communication patterns. Winsw is an open source service mesh built on Azure Service Fabric (formerly known as Project Natick). It's designed to provide scalable, reliable, elastic and resilient messaging infrastructure for modern cloud applications. Winsw provides high availability for your microservices by maintaining stateful endpoints for each individual service instance with its own set of routing rules in one place. A few of the most popular open source C# Service mesh libraries for developers are

php-service-mesh

13 best PHP Service mesh

PHP Service mesh libraries are used to connect different pieces of code together, so they can interact with each other. These libraries can help you build scalable applications that can communicate with each other through a network of services. PHP Service mesh libraries like monolog, wave, organizr, phpbu are very popular and have a lot of features to help you build your application. They are also very easy to use and can be easily integrated into your project. They have better performance due to their built-in caching mechanism which is not available in the other libraries. Also they provide better support for multiple languages. Monolog is the most popular library for monitoring your applications and services. It is a very lightweight library that can be used to monitor almost anything in your application. Monolog has built-in support for HTTP, SQL, Redis, and web sockets. Wave uses a different approach to monitoring by taking advantage of Kubernetes resources and services. It allows you to manage your pods as well as scale down or scale up your applications based on load conditions. The Organizr library is made up of several components, each one dealing with a specific aspect of monitoring an application or service. For example, there is an agent component that runs on each node and an agent manager that monitors all nodes in your cluster. The agent manager sends notifications to other components when alerts occur, such as if there are errors in the logs or if something goes wrong with a service. There are several popular open source PHP Service mesh libraries available for developers

python-architecture

14 best Python Architecture

Python Architecture libraries have a lot of great features. They can be used to easily build a complete application from scratch or to augment existing code. The biggest advantage is that these libraries abstract away some of the details of the underlying architecture and make it easier to write applications that take advantage of all of their features. The best part about these libraries is that they are open source, so anyone can contribute if they want to improve them or make them better. The Python Architecture libraries offer a set of common building blocks for machine learning and AI applications. These libraries are used to implement the architecture of many different types of algorithms in the field of artificial intelligence. The ENAS-pytorch library is a Python interface to the Semantic Segmentation and Detection (ENAS) framework. This library allows users to segment images into different classes by using a pre-trained model trained on TensorFlow objects. Developers tend to use some of the following open source Python Architecture libraries

go-service-mesh

16 best Go Service mesh

Go service mesh libraries like istio, linkerd2, osm, gloo-mesh are used to introduce the concept of microservices in Go. These libraries can provide end-to-end visibility of services across the cluster. In addition, they also provide a number of other features such as load balancing and service discovery which helps you to scale your applications easily. Linkerd2 is the main service mesh library used by Linkerd and many other companies using Linkerd as their primary service mesh. iGloobus Mesh is another option, though it was developed for Google Cloud Platform (GCP) specifically. Gloobus Mesh can be configured to work with multiple clouds. Istio is also an excellent choice for service mesh, but its main advantage over Linkerd is that it’s built on Kubernetes and runs on any cloud provider that supports Kubernetes. As such, it can be used with any orchestrator — including Kubernetes itself — and works with all the major cloud providers. Developers tend to use some of the following open source Go service mesh libraries

csharp-pwa

5 best C# PWA

There are several C# libraries that you can use to build your PWAs with. RecursiveExtractor is a C# library for extracting data from recursive data sources. It uses a simple, yet powerful, approach to parsing HTML and JSON results. pwabuilder-ios is a library for building Progressive Web Apps (PWA) on the iOS platform. It provides the ability to create custom manifest files and handle all of the different aspects of development on iOS platforms. TheLastTime is a C# library that allows developers to easily create PWA's using tools like Angular and Vue.js. It uses ReactJS as its rendering engine, so you'll have to make sure your app is compatible if you want this library to work with it! It helps you create an iOS app that uses the last time function on the device to record your data and save it to a file. You can use this for any application that is using the pwa.yaml format. xamarin-forms-pwa is an open source library for building PWAs using Xamarin Forms. Xamarin Forms Player View is a framework that allows you to display videos in your app without any code required. This can be used for any application that has been created with Xamarin Forms or another UI framework such as React Native or Flutter.

javascript-pwa

10 best JavaScript PWA

The JavaScript PWA libraries provide a way to build a Progressive Web App that can be delivered using the same ways as any other website, on the web and in apps. The use of JavaScript PWA libraries like workbox, next-pwa, pwa-studio, sample-media-pwa helps in making your client application faster and easier to use. It has its own advantages over vanilla JavaScript applications. The biggest advantage is that it gives your web application an instant user experience without any plugin or external dependency. Using such libraries also let you add more features in your application without worrying about how much it would take to build them in your codebase. They use modern technologies such as Service Workers, Push Notifications and Offline capabilities that help users stay connected even when they're not connected to the Internet. Workbox is a JavaScript PWA library for building responsive, offline capable, progressive web apps with minimal effort and zero boilerplate code. It supports server side rendering (SSR), a technique which allows clients to update at runtime by sending new content from the server rather than having the client wait for it to download each time the page loads. The Next-PWA library is an open source JavaScript framework that supports Progressive Web Apps (PWAs) and features useful features like offline support, push notifications, and more.

java-microservice

11 best Java Microservice

It is very difficult to maintain a large monolithic application. It is also difficult to release new features and bug fixes. But using the Java Microservice libraries like apollo, nacos, armeria can easily solve these problems. The microservice approach has been around for a while now and is being used by many organizations to improve their efficiency, increase the speed of delivery and enhance the quality of their products. Apollo is an open source framework that provides efficient support for building fast and scalable distributed applications with a unified programming model. Apollo uses HTTP as its primary protocol and provides an HTTP client implementation that supports all of the major web browsers (including IE6) as well as other clients such as curl and wget. Apollo also supports streaming data using either Netty or GZIP compression for efficient high-volume data transfers over low bandwidth connections. Nacos is a lightweight library for building reactive asynchronous systems in Java SE 9+. The main purpose of NACOS is to provide a simple yet robust way to create asynchronous applications using Java SE 9+ functional interfaces with low overhead on thread creation overhead and/or blocking calls at the expense of some performance impact due to the need to manage threads yourself. Some of the most popular among developers are:

javascript-architecture

11 best JavaScript Architecture

JavaScript architecture libraries help you build better, reusable and testable code by providing you with an interface to various aspects of a computer system. They provide abstractions that allow you to build powerful apps without having to understand all the details of how they work underneath. The JavaScript architecture libraries clean-code-javascript and generator-jhipster help you write more maintainable JavaScript code. They also allow you to use more advanced features of the language. clean-code-javascript is a Javascript framework that helps developers write code that is easy to read, easy to maintain and easy to test. It provides abstractions on top of various parts of your application such as models, views, controllers, services etc. The library is used by thousands of developers across the world and has been downloaded more than 5 million times from its website. generator is a library for building custom generators for ES6+ syntax (including async/await). Jhipster is a powerful & extensible JavaScript library for working with HTML elements & CSS properties directly from your codebase. With Jhipster, you can write more efficient code by generating DOM elements and changes as you write them so you can focus on business logic instead of DOM manipulation. Generator-jhipster is a library for building custom generators for ES6+ syntax (including async/await). Popular open source JavaScript architecture libraries for developers include

php-ux

11 best PHP UX

PHP UX libraries are designed to make life easier for developers. They provide prebuilt components that can be combined together into complex user interfaces without having to worry about the underlying code behind each component. These libraries are often used in conjunction with other frameworks such as Symfony or Laravel (or any other framework that supports them). PHP UX libraries are a great way to help you get started with your design and development. Integrating these tools into your project will make it easier to create engaging user experiences and increase the overall efficiency of your work. ux-turbo is a lightweight library for creating UI components using Bootstrap 4.3 and Material Design guidelines. It also has a number of custom widgets like datepicker, card and more. customizr is is an open source framework that allows developers to quickly build beautiful, responsive websites with little code. The library makes it easy to customize any part of a website without having to touch the HTML or CSS code at all. It also comes with lots of useful Widgets like modals, popups and much more! You can find more info about customizr on their website here or check out their documentation page here . ux-dropzone is another simple library built on top of Bootstrap 4.3 and includes various UI components such as popovers, tooltips, buttons and much more! Popular open source PHP UX libraries for developers include

csharp-service-mesh

13 best C# Service mesh

C# Service mesh libraries are a new way of building microservices. The idea is that you build your entire application as a series of services, and then use a service mesh to connect them together. The most common are Nancy and Winsw. But there are others like Hangfire and ServiceStack that have been gaining traction lately. One is not better than the other, but it's good to know what all the options are so you can make an informed decision about which one to use. Nancy is an open source project that provides a framework for monitoring microservices and orchestrating applications as they scale up or down in size. It provides features such as health checking and auto-discovery of services in your system. It also supports reactive messaging between client applications and services, which makes it a good choice if you want to build distributed systems with asynchronous communication patterns. Winsw is an open source service mesh built on Azure Service Fabric (formerly known as Project Natick). It's designed to provide scalable, reliable, elastic and resilient messaging infrastructure for modern cloud applications. Winsw provides high availability for your microservices by maintaining stateful endpoints for each individual service instance with its own set of routing rules in one place. A few of the most popular open source C# Service mesh libraries for developers are

php-service-mesh

13 best PHP Service mesh

PHP Service mesh libraries are used to connect different pieces of code together, so they can interact with each other. These libraries can help you build scalable applications that can communicate with each other through a network of services. PHP Service mesh libraries like monolog, wave, organizr, phpbu are very popular and have a lot of features to help you build your application. They are also very easy to use and can be easily integrated into your project. They have better performance due to their built-in caching mechanism which is not available in the other libraries. Also they provide better support for multiple languages. Monolog is the most popular library for monitoring your applications and services. It is a very lightweight library that can be used to monitor almost anything in your application. Monolog has built-in support for HTTP, SQL, Redis, and web sockets. Wave uses a different approach to monitoring by taking advantage of Kubernetes resources and services. It allows you to manage your pods as well as scale down or scale up your applications based on load conditions. The Organizr library is made up of several components, each one dealing with a specific aspect of monitoring an application or service. For example, there is an agent component that runs on each node and an agent manager that monitors all nodes in your cluster. The agent manager sends notifications to other components when alerts occur, such as if there are errors in the logs or if something goes wrong with a service. There are several popular open source PHP Service mesh libraries available for developers

Trending Discussions on Architecture

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QUESTION

Is there a higher performing implementation of powf(10,floorf(log10f(x)))

Asked 2022-Apr-16 at 01:04

I have a need to truncate a float to the nearest power of 10. For example, 1.1 would truncate to 1.0 and 4.7e3 would truncate to 1e3. I am currently doing it with the seemingly complicated powf(10,floorf(log10f(x))). I am wondering whether there is a better performing (as in faster execution speed) solution? My target CPU architecture is both x86-64 and arm64.

1#include <stdio.h>
2#include <math.h>
3
4int main()
5{
6  float x = 1.1e5f;
7  while (x > 1e-6f)
8  {
9    float y = powf(10,floorf(log10f(x)));
10    printf("%e ==> %g\n", x, y); 
11    x /= 5.0f;
12  }
13}
14

when run, this produces

1#include <stdio.h>
2#include <math.h>
3
4int main()
5{
6  float x = 1.1e5f;
7  while (x > 1e-6f)
8  {
9    float y = powf(10,floorf(log10f(x)));
10    printf("%e ==> %g\n", x, y); 
11    x /= 5.0f;
12  }
13}
141.100000e+05 ==> 100000
152.200000e+04 ==> 10000
164.400000e+03 ==> 1000
178.800000e+02 ==> 100
181.760000e+02 ==> 100
193.520000e+01 ==> 10
207.040000e+00 ==> 1
211.408000e+00 ==> 1
222.816000e-01 ==> 0.1
235.632000e-02 ==> 0.01
241.126400e-02 ==> 0.01
252.252800e-03 ==> 0.001
264.505600e-04 ==> 0.0001
279.011199e-05 ==> 1e-05
281.802240e-05 ==> 1e-05
293.604480e-06 ==> 1e-06
30

ANSWER

Answered 2022-Apr-15 at 16:36

I would say don't sweat it. Unless the program is spending a large proportion of its time doing this truncation, it's not worth optimising what is probably super-fast anyway. But if you wanted to optimise for your common cases (1e-2 <= x <= 10), then you might try using 32-bit integer arithmetic to compare with the binary representations of 1e-2, 1e-1, 1, and 10 (for instance, 1e-1 is 0x3dcccccd) ; if it's outside that range, you can fall back on the floating point version. Only experimentation will determine if this actually runs faster.

Source https://stackoverflow.com/questions/71886042

Community Discussions contain sources that include Stack Exchange Network

    Is there a higher performing implementation of powf(10,floorf(log10f(x)))
    Unknown host CPU architecture: arm64 , Android NDK SiliconM1 Apple MacBook Pro
    remark: Incremental compilation has been disabled: it is not compatible with whole module optimization
    How to replace the bundled Dart SDK in Flutter to run natively on Apple Silicon (ARM64)?
    How do I resolve error message: &quot;Inheritance from an interface with '@JvmDefault' members is only allowed with -Xjvm-default option&quot;
    How does an instruction decoder tell the difference between a prefix and a primary opcode?
    Flag provided but not defined: -rpc
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QUESTION

Is there a higher performing implementation of powf(10,floorf(log10f(x)))

Asked 2022-Apr-16 at 01:04

I have a need to truncate a float to the nearest power of 10. For example, 1.1 would truncate to 1.0 and 4.7e3 would truncate to 1e3. I am currently doing it with the seemingly complicated powf(10,floorf(log10f(x))). I am wondering whether there is a better performing (as in faster execution speed) solution? My target CPU architecture is both x86-64 and arm64.

1#include &lt;stdio.h&gt;
2#include &lt;math.h&gt;
3
4int main()
5{
6  float x = 1.1e5f;
7  while (x &gt; 1e-6f)
8  {
9    float y = powf(10,floorf(log10f(x)));
10    printf(&quot;%e ==&gt; %g\n&quot;, x, y); 
11    x /= 5.0f;
12  }
13}
14

when run, this produces

1#include &lt;stdio.h&gt;
2#include &lt;math.h&gt;
3
4int main()
5{
6  float x = 1.1e5f;
7  while (x &gt; 1e-6f)
8  {
9    float y = powf(10,floorf(log10f(x)));
10    printf(&quot;%e ==&gt; %g\n&quot;, x, y); 
11    x /= 5.0f;
12  }
13}
141.100000e+05 ==&gt; 100000
152.200000e+04 ==&gt; 10000
164.400000e+03 ==&gt; 1000
178.800000e+02 ==&gt; 100
181.760000e+02 ==&gt; 100
193.520000e+01 ==&gt; 10
207.040000e+00 ==&gt; 1
211.408000e+00 ==&gt; 1
222.816000e-01 ==&gt; 0.1
235.632000e-02 ==&gt; 0.01
241.126400e-02 ==&gt; 0.01
252.252800e-03 ==&gt; 0.001
264.505600e-04 ==&gt; 0.0001
279.011199e-05 ==&gt; 1e-05
281.802240e-05 ==&gt; 1e-05
293.604480e-06 ==&gt; 1e-06
30

ANSWER

Answered 2022-Apr-15 at 16:36

I would say don't sweat it. Unless the program is spending a large proportion of its time doing this truncation, it's not worth optimising what is probably super-fast anyway. But if you wanted to optimise for your common cases (1e-2 <= x <= 10), then you might try using 32-bit integer arithmetic to compare with the binary representations of 1e-2, 1e-1, 1, and 10 (for instance, 1e-1 is 0x3dcccccd) ; if it's outside that range, you can fall back on the floating point version. Only experimentation will determine if this actually runs faster.

Source https://stackoverflow.com/questions/71886042