Phi | an inefficient c-like language compiler with llvm as backend | Compiler library

 by   rod-lin C++ Version: Current License: MIT

kandi X-RAY | Phi Summary

kandi X-RAY | Phi Summary

Phi is a C++ library typically used in Utilities, Compiler applications. Phi has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

A C-like language compiler using llvm as the backend.
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            kandi-support Support

              Phi has a low active ecosystem.
              It has 7 star(s) with 1 fork(s). There are 2 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              Phi has no issues reported. There are no pull requests.
              It has a neutral sentiment in the developer community.
              The latest version of Phi is current.

            kandi-Quality Quality

              Phi has no bugs reported.

            kandi-Security Security

              Phi has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

            kandi-License License

              Phi is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              Phi releases are not available. You will need to build from source code and install.

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            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of Phi
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            Phi Key Features

            No Key Features are available at this moment for Phi.

            Phi Examples and Code Snippets

            Calculate the joseph - phi .
            javadot img1Lines of Code : 12dot img1License : Permissive (MIT License)
            copy iconCopy
            public static int josephus(int n, int k) {
            
                    if (k <= 0 || n <= 0) {
                        return -1;
                    }
            
                    if (n == 1) {
                        return 1;
                    } else {
                        return (josephus(n - 1, k) + k - 1) % n + 1;
                    }
                }  
            Return the euler s basis function .
            pythondot img2Lines of Code : 9dot img2License : Permissive (MIT License)
            copy iconCopy
            def euler_phi(n: int) -> int:
                """Calculate Euler's Phi Function.
                >>> euler_phi(100)
                40
                """
                s = n
                for x in set(prime_factors(n)):
                    s *= (x - 1) / x
                return int(s)  
            Adds a range of angles to phi
            javascriptdot img3Lines of Code : 5dot img3no licencesLicense : No License
            copy iconCopy
            function boundsPoint(lambda, phi) {
                    ranges.push(range = [lambda0$1 = lambda, lambda1 = lambda]);
                    if (phi < phi0) phi0 = phi;
                    if (phi > phi1) phi1 = phi;
                }  

            Community Discussions

            QUESTION

            Plot points from multiple series as one and keep order of initial dataframe in ggplot2
            Asked 2021-Jun-14 at 11:24

            I have a dataset with multiple variables and wish to plot them on one graph as one series so that I can plot a "trendline" through the datapoints. However, it's important that the order is the same as the row names in the original dataframe.

            I can plot the points as so:

            ...

            ANSWER

            Answered 2021-Jun-14 at 11:24

            To maintain the same order as rownames of the orignal dataframe you can do -

            Source https://stackoverflow.com/questions/67969247

            QUESTION

            Name integers in a loop
            Asked 2021-Jun-09 at 14:04

            I need to give these integers names like ex_number_1, ex_number_2, ex_number_3, etc... These are each going to be saved as a different branch of a tree. So I have done:

            ...

            ANSWER

            Answered 2021-Jun-08 at 23:32

            It complains about conflicting variable declarations

            Simply give the array variable a different name than what you gave for the integer variable. Example:

            Source https://stackoverflow.com/questions/67895685

            QUESTION

            Server runs locally but crashes on Heroku
            Asked 2021-Jun-08 at 23:10

            I deployed my server on Heroku but when I make any requests it returns a "500 Internal Server" error. It runs fine locally though. Could anyone help figure out what's going on?

            When I check my logs this is what I'm getting.

            ...

            ANSWER

            Answered 2021-Jun-08 at 23:10

            As mentioned here on Heroku help, this indicate that there was a failed authentication attempt to the database, so the connection couldn't be established. This can happen because of different reasons.

            In your case i suspect it's something related to not using ssl. So after taking a look on the code provided in the github repo i noticed you are using knex and getting the connection string from .env

            Try this :

            • Just add this ?ssl=true and append it to the end of DATABASE_URL in your .env file.

            • Edit your server.js (i didn't take a good look at the code so you need to add this ssl: { rejectUnauthorized: false } in your connection config) :

            Source https://stackoverflow.com/questions/67893392

            QUESTION

            How to assign colors to rows in barplot3d function
            Asked 2021-Jun-08 at 12:39

            I used barplot3d::barplot3d to visualize my data. I have been trying to assign a color to each row instead of using topcolors = rainbow(100), but I could not figure it out. I appreciate any helps, suggestions, or references.

            Here is the code that I have:

            ...

            ANSWER

            Answered 2021-Jun-08 at 12:39

            Answer

            Just repeat each column cols times, where cols is the number of columns:

            Source https://stackoverflow.com/questions/67879690

            QUESTION

            Why can't I show the ð symbol in LaTeX?
            Asked 2021-Jun-08 at 09:28

            I can use \DeclareUnicodeCharacter{0278}{\phi} and then $ɸ$ to display the ɸ symbol in LaTeX. However, when I try to use:

            ...

            ANSWER

            Answered 2021-Jun-08 at 09:28

            You need

            • a package which provides the \eth macro in the encoding you are using, e.g. stix
            • the \eth macro from this package is, unlike \phi, a text macro and not a math macro, so either use it outside of a math environment or surround it with \text{..} from the amsmath package
            • if your tex distribution is not totally out of date, you don't need \usepackage[utf8]{inputenc}, that's the default since a couple of years

            Source https://stackoverflow.com/questions/67884480

            QUESTION

            sympy Maximum-Likelihood: clarification of script from book
            Asked 2021-Jun-05 at 14:01

            the code below is from the book "Python for Probability, Statistics, and Machine Learning. The clarification needed is for the plotting section. The problem is that "logJ" in the script is not-defined. However, the book provides this as the code to plot the graph. How do you correct (code) the plotting part of the script so it plots the output shown?

            ...

            ANSWER

            Answered 2021-Jun-05 at 14:01

            With a couple of changes (logL to logJ, and map made into list) displays the graph:

            Source https://stackoverflow.com/questions/67849938

            QUESTION

            Python – Print a character based on Unicode name stored as a string variable
            Asked 2021-Jun-01 at 16:25

            I am trying to make a script that prints a set of characters based on their Unicode names (What I mean by 'Unicode name' is that I want to use the character's 'description', not the codepoint).

            I understood that the standard way to do it for a single character is to do:

            ...

            ANSWER

            Answered 2021-Jun-01 at 15:49

            Does this work for you?

            Source https://stackoverflow.com/questions/67791949

            QUESTION

            How to integrate a pytorch model into a dynamic optimization, for example in Pyomo or gekko
            Asked 2021-May-27 at 13:39

            Let's say I have a pytorch-model describing the evolution of some multidimensional system based on its own state x and an external actuator u. So x_(t+1) = f(x_t, u_t) with f being the artificial neural network from pytorch.

            Now i want to solve a dynamic optimization problem to find an optimal sequence of u-values to minimize an objective that depends on x. Something like this:

            min sum over all timesteps phi(x_t)

            s.t.: x_(t+1) = f(x_t, u_t)

            Additionally I also have some upper and lower bounds on some of the variables in x.

            Is there an easy way to do this using a dynamic optimization toolbox like pyomo or gekko?

            I already wrote some code that transforms a feedforward neural network to a numpy-function which can then be passed as a constraint to pyomo. The problem with this approach is, that it requires significant reprogramming-effort every time the structure of the neural network changes, so quick testing becomes difficult. Also integration of recurrent neural networks gets difficult because hidden cell states would have to be added as additional variables to the optimization problem.

            I think a good solution could be to do the function evaluations and gradient calculations in torch and somehow pass the results to the dynamic optimizer. I'm just not sure how to do this.

            Thanks a lot for your help!

            ...

            ANSWER

            Answered 2021-May-27 at 13:39

            Tensorflow or Pytorch models can't be directly integrated into the GEKKO at this moment. But, I believe you can retrieve the derivatives from Tensorflow and Pytorch, which allows you to pass them to the GEKKO.

            There is a GEKKO Brain module and examples in the link below. You can also find an example that uses GEKKO Feedforward neural network for dynamic optimization.

            GEKKO Brain Feedforward neural network examples

            MIMO MPC example with GEKKO neural network model

            Recurrent Neural Network library in the GEKKO Brain module is currently being developed, which allows using all the GEKKO's dynamic optimization functions easily.

            In the meantime, you can use a sequential method by wrapping the TensorFlow or PyTorch models in the available optimization solver such as scipy optimization module.

            Check out the below link for a dynamic optimization example with Keras LSTM model and scipy optimize.

            Keras LSTM MPC

            Source https://stackoverflow.com/questions/67693181

            QUESTION

            Scipy quad integral of imaginary numbers
            Asked 2021-May-27 at 09:21

            I want to calculate integral of implicit function containing imaginary numbers

            where f(iz) is something like:

            and g(ix) is something like:

            I want to calculate it numerically. Python scipy.quad doesn't calculate integrals of imaginary numbers (explained in Code 1 below). Quadpy isn't efficient also, because it passes entire numpy array instead of single values of integral (explained in code 2 below) and thus needs additional manipulation. So I am thinking about dividing integrals like in the way shown below (where Re is real part and Im is imaginary part):

            and expanding above equation:

            Can I do that?

            And here are codes, where I show two ways to approach the problem.

            Code 1:

            First approach scipy.quad. According to: Use scipy.integrate.quad to integrate complex numbers I tried dividing into real and imaginary parts and calculating integral values of them separately:

            ...

            ANSWER

            Answered 2021-May-27 at 09:21

            This is my interpretation of your integral

            The answer about how to generalize the integral can be extended to double integral (provided by dblquad function).

            Source https://stackoverflow.com/questions/67713597

            QUESTION

            Matrix multiplication and matrix powers using pandas
            Asked 2021-May-27 at 04:00

            I have a square matrix of some probabilities, call it Phi, stored as a pandas Dataframe. I want to try multiplying this matrix by itself a large number of times to see what happens. I can easily 'square' the matrix with:

            ...

            ANSWER

            Answered 2021-Jan-31 at 11:28

            Phi**1000 where ** is python power operator Unless you know this converges, the result will quickly overflow and you will end up with nowhere. Slowy increase the to the power of N and see if the result is converging, many elements goes to 0 in this case. If it diverges, many elements will increase but overflow to 0, so you better test out from small N to larger N

            Source https://stackoverflow.com/questions/65695922

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install Phi

            You can download it from GitHub.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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