mpz | Music player for big local collections | Audio Utils library

 by   olegantonyan C++ Version: 1.0.22 License: Non-SPDX

kandi X-RAY | mpz Summary

kandi X-RAY | mpz Summary

mpz is a C++ library typically used in Audio, Audio Utils applications. mpz has no bugs, it has no vulnerabilities and it has low support. However mpz has a Non-SPDX License. You can download it from GitHub.

Music player for big local collections

            kandi-support Support

              mpz has a low active ecosystem.
              It has 64 star(s) with 1 fork(s). There are 1 watchers for this library.
              It had no major release in the last 12 months.
              There are 18 open issues and 115 have been closed. On average issues are closed in 118 days. There are 3 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of mpz is 1.0.22

            kandi-Quality Quality

              mpz has 0 bugs and 0 code smells.

            kandi-Security Security

              mpz has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              mpz code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              mpz has a Non-SPDX License.
              Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

            kandi-Reuse Reuse

              mpz releases are available to install and integrate.
              Installation instructions, examples and code snippets are available.

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            mpz Key Features

            No Key Features are available at this moment for mpz.

            mpz Examples and Code Snippets

            Music player for big local collections,Configuration
            C++dot img1Lines of Code : 21dot img1License : Non-SPDX (NOASSERTION)
            copy iconCopy
              - align: left
                field: artist
                stretch: false
                width_percent: 28
              - align: left
                field: album
                stretch: false
                width_percent: 28
              - align: left
                field: title
                stretch: false
                width_percent: 28
              - align:   
            Music player for big local collections,Installation
            C++dot img2Lines of Code : 12dot img2License : Non-SPDX (NOASSERTION)
            copy iconCopy
            git clone
            cd mpz
            makepkg -si
            git clone
            cd mpz
            mkdir build
            cd build
            qmake-qt5 CONFIG+=release ..
            make -j`nproc`
            # now you now use app/mpz binary directly
            # optionally, install to /  

            Community Discussions


            Is there a more elegant way to read a Textfile containing mpz values into a list of integers?
            Asked 2022-Jan-24 at 11:02

            I have a Textfile containing numbers that looks as follows:



            Answered 2022-Jan-23 at 13:42

            I tried look at a more elegant solution from both the human-readable perspective and from the performance perspective.


            • There is a lot going on here
            • I do not have the original file, so the numbers below will not match any numbers you might get on your device
            • There is too much work to try and benchmark all the various parts so I tried to focus on several of the biggest components

            The breakouts and timing below seem to show an order of magnitude difference in several of the approaches, so they may still be of use in gauging level of computational effort.

            My first approach was to try and measure the amount of overhead the file read/write added to the process so that we could explore how much computational effort was focused on just the data processing step.

            To do this, I made a function that included the file read and measured the whole process, end to end to see how long it took with my mini example file. I did this using %timeit in a Jupyter notebook.

            I then broke out the file reading step into it's own function and then used %timeit on just the data processing step to help show us:

            • how much time was used by file reads vs data processing in the original approach
            • how much time was used by the data processing approach in the improved approach.
            Original Approach (in a function)



            Python: speed up pow(base,exp,mod) for fixed exp and mod, or with vectorization
            Asked 2021-May-30 at 21:22

            The bottleneck of my code is the repeated calling of pow(base,exponent,modulus) for very large integers (numpy does not support such large integers, about 100 to 256 bits). However, my exponent and modulus is always the same. Could I somehow utilize this to speed the computation up with a custom function? I tried to define a function as seen below (function below is for general modulus and exponent).

            However, even if I hardcode every operation without the while-loop and if-statements for a fixed exponent and modulus, it is slower than pow.



            Answered 2021-May-23 at 21:54

            Looking at the wiki page. Doesn't seem like your implementation is correct. Moving the those two statements out of else have improved the performance significantly.

            This is what I have from Wikipedia



            I havea numpy indexing bug that i can't figure out?
            Asked 2021-Apr-20 at 22:41

            In the second line before the out statement the answer is -1, buy due to my print it should be the answer: 618970019642690137449562111, which is 2**89-1, instead i'm getting -1

            I can't for the life of me figure out what the bug is, could someone enlighten me? Why am i getting -1 there instead of 618970019642690137449562111

            Here is the code, the error with the "-1" is two lines right before the "[Out 778:]" statement ( you have to scroll right to see it). It should keep climbing the powers of 2 tree minus 1 but it gives the answer -1 which is incorrect:



            Answered 2021-Apr-20 at 22:41

            It's an overflow error. You can use python's int which doesn't overflow. You can add dtype to your mersenne array to solve it:



            Why GNU MP (gmplib) from MSYS2 unexpectadely converts ull to 32 bit integer?
            Asked 2021-Feb-15 at 00:29

            I am porting my c++ code from Linux to Windows using MSYS2 (64 bit). The key library is GNU MP (gmplib). The following code gives wrong results in MSYS2/MinGW64 environment while in Ubuntu works fine. Apparantly there is an unwanted conversion from 64 bit integer to 32 bit unteger when using mpz_set_ui function.



            Answered 2021-Feb-15 at 00:29

            The mpz_get_ui() function returns an unsigned long, NOT an unsigned long long.

            On Linux/GCC, unsigned long is a 64-bit value, however the C++ standard only requires that unsigned long support values up to 4'294'967'295, which can be satisfied by a 32-bit integer. Linux allows larger values, but MSVC and MinGW on Windows will use a 32-bit integer for unsigned long. This means that on Windows, your 64-bit input value in mps_set_ui() is downgraded to a 32-bit value.

            Therefore the behavior on both compilers is correct, you've tripped over a platform-specific implementation detail.

            If you wish to allow use of 64-bit integers everywhere, you should use fixed bit-width integer types (e.g. uint64_t instead of unsigned long), but that stil won't allow you to specify 64-bit integers mp_set_ui on Windows unfortunately.



            Qt 5.7.1 / gcc 6.3.0: error: body of constexpr function 'static constexpr int QMetaTypeId2
            Asked 2020-Sep-01 at 12:14

            This piece of code



            Answered 2020-Sep-01 at 12:14

            Found the problem: value.setValue(nullptr); in the constructor, where value is QVariant.

            Removed this line and now it compiles OK. Not sure why I put it there in the first place



            How to build GMP in MSYS2?
            Asked 2020-Aug-04 at 00:30

            I would like to use GMP on windows, and I need to build static programs. (which means that, if anyone can provide another solution to compile win32 x86_64 programs using libgmp, I will also appreciate it.)

            Now I have msys2 installed, and in it I have executed



            Answered 2020-Aug-04 at 00:30

            With the help of @HolyBlackCat, I solved this problem and successfully compiled my programs. Here is the process:

            Install msys2
            1. Download the executable file from and install msys2. You will get three shortcuts in your opening menu: MSYS MinGW 32-bit, MSYS2 MinGW 64-bit and MSYS2 MSYS. The difference between them is the PATH. MSYS's path is /usr/bin, while MinGW 64-bit's path includes /mingw64/bin.
            2. Install necessary packages. Run the following commands:



            Python ctypes 'c_char_p' memory leak
            Asked 2020-Feb-18 at 14:08

            I'm developing a Python library for cryptography. I wanted to optimize my library by writing the main classes in C++ with GMP. I wrote my C++ classes and I wrote the extern methods to use the main arithmetic operations: addition, subtraction, etc... These methods returns the results as char* to avoid cast problems. I built the DLL of my library and I declared the methods in a Python wrapper with ctypes. I noticed that after each arithmetic operation with huge numbers the memory grew exponentially. I was looking for problems in my C++ implementation, but there were no problems thanks to the C++ garbage collector. I was looking for a possible solution, so I discovered that I had to implement a C++ method to free up memory of the string created by the DLL. So I wrote this simple method:



            Answered 2020-Feb-18 at 14:08

            The problem is in this line:


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


            No vulnerabilities reported

            Install mpz

            Use Open Build Service repositories: Use AUR package: Dependencies: gcc, make, qt development headers (libqt5-qtbase-devel libqt5-qtmultimedia-devel libqt5-qtx11extras-devel). Packages' names may differ in different distros. Both Qt5 and Qt6 are supported.


            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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