SCIP - Solving Constraint Integer Programs

Overview

SCIP: Solving Constraint Integer Programs

Welcome to what is currently one of the fastest academically developed solvers for mixed integer programming (MIP) and mixed integer nonlinear programming (MINLP). In addition, SCIP provides a highly flexible framework for constraint integer programming and branch-cut-and-price. It allows for total control of the solution process and the access of detailed information down to the guts of the solver.

The original instance of this repository is hosted at git.zib.de and a read-only mirror is available at github.com/scipopt/scip.

Further information and resources are available through the official website at scipopt.org:

  • online documentation of the code with information how to get started,
  • downloads of official releases and binaries for various platforms,
  • release reports and scientific articles describing the algorithms behind SCIP,
  • information how to cite SCIP when you use it in scientific publications,
  • ...

For installation instructions have a look here or in the online documentation.

Issues
  • Bliss API Compatability: `AbstractGraph::find_automorphisms`; outdated signature

    Bliss API Compatability: `AbstractGraph::find_automorphisms`; outdated signature

    When trying to compile SCIP from source, the build fails with

    error: cannot convert ‘void(void*, unsigned int, const unsigned int*)’ to ‘const std::function<void(unsigned int, const unsigned int*)>&
    

    in https://github.com/scipopt/scip/blob/07dfd86f87f15f8d31eee700f603283bfb6ab357/src/symmetry/compute_symmetry_bliss.cpp#L1087

    I looked up the reference, seems like Bliss has changed the signature (user_param is no longer accepted as a param), Is SCIP using a forked version of the API?

    I was able to surpass the error by rewriting the blisshook to

        auto blisshook = [&data](
          unsigned int          n,                  /**< size of aut vector */
          const unsigned int*   aut                 /**< automorphism */
          )
        {
          assert( aut != NULL );
    
          assert( data.scip != NULL );
          assert( data.npermvars < (int) n );
          assert( data.maxgenerators >= 0);
    
          /* make sure we do not generate more that maxgenerators many permutations, if the limit in bliss is not available */
          if ( data.maxgenerators != 0 && data.nperms >= data.maxgenerators )
              return;
    
          /* copy first part of automorphism */
          bool isIdentity = true;
          int* p = 0;
          if ( SCIPallocBlockMemoryArray(data.scip, &p, data.npermvars) != SCIP_OKAY )
              return;
    
          for (int j = 0; j < data.npermvars; ++j)
          {
              /* convert index of variable-level 0-nodes to variable indices */
              p[j] = (int) aut[j];
              if ( p[j] != j )
                isIdentity = false;
          }
    
          /* ignore trivial generators, i.e. generators that only permute the constraints */
          if ( isIdentity )
          {
              SCIPfreeBlockMemoryArray(data.scip, &p, data.npermvars);
              return;
          }
    
          /* check whether we should allocate space for perms */
          if ( data.nmaxperms <= 0 )
          {
              if ( data.maxgenerators == 0 )
                data.nmaxperms = 100;   /* seems to cover many cases */
              else
                data.nmaxperms = data.maxgenerators;
    
              if ( SCIPallocBlockMemoryArray(data.scip, &data.perms, data.nmaxperms) != SCIP_OKAY )
                return;
          }
          else if ( data.nperms >= data.nmaxperms )    /* check whether we need to resize */
          {
              int newsize = SCIPcalcMemGrowSize(data.scip, data.nperms + 1);
              assert( newsize >= data.nperms );
              assert( data.maxgenerators == 0 );
    
              if ( SCIPreallocBlockMemoryArray(data.scip, &data.perms, data.nmaxperms, newsize) != SCIP_OKAY )
                return;
    
              data.nmaxperms = newsize;
          }
    
          data.perms[data.nperms++] = p;
        };
    

    and the call to

       G.find_automorphisms(stats, blisshook);
    

    It is now working as expected, if you think that's a correct fix, I can prepare a patch :).

    Thanks.

    opened by ndrwnaguib 7
  • Add support for FreeBSD (amplmp compilation issue)

    Add support for FreeBSD (amplmp compilation issue)

    When trying to build SCIP in our Vagrant generic/FreeBSD13 box (note a FreeBSD VirtualBox img) we are facing some compilation issue...

    Observed

    here the relevant trace (please notice we are building SCIP using FetchContent from our or-tools CMake based build)

    default: [ 48%] Building CXX object _deps/scip-build/src/CMakeFiles/libscip.dir/amplmp/src/os.cpp.o
        default: cd /usr/home/vagrant/project/build/_deps/scip-build/src && /usr/bin/c++  -I/usr/home/vagrant/project/build/_deps/scip-src/src/amplmp/include -I/usr/home/vagrant/project/build/_deps/scip-build -I/usr/home/vagrant/project/build/_deps/scip-src/src -I/usr/home/vagrant/project/build/_deps/zlib-build -I/usr/home/vagrant/project/build/_deps/zlib-src -O3 -DNDEBUG -fPIC -fvisibility=hidden -fvisibility-inlines-hidden -std=c++14 -MD -MT _deps/scip-build/src/CMakeFiles/libscip.dir/amplmp/src/os.cpp.o -MF CMakeFiles/libscip.dir/amplmp/src/os.cpp.o.d -o CMakeFiles/libscip.dir/amplmp/src/os.cpp.o -c /usr/home/vagrant/project/build/_deps/scip-src/src/amplmp/src/os.cpp
        default: /usr/home/vagrant/project/build/_deps/scip-src/src/amplmp/src/os.cpp:108:4: error: GetExecutablePath is not implemented for this system
        default: #  error GetExecutablePath is not implemented for this system
        default:    ^
        default: 1 error generated.
        default: *** Error code 1
        default: 
        default: Stop.
        default: make[2]: stopped in /usr/home/vagrant/project/build
        default: *** Error code 1
        default: 
        default: Stop.
        default: make[1]: stopped in /usr/home/vagrant/project/build
        default: *** Error code 1
        default: 
        default: Stop.
        default: make: stopped in /usr/home/vagrant/project/build
    The SSH command responded with a non-zero exit status. Vagrant
    assumes that this means the command failed. The output for this command
    should be in the log above. Please read the output to determine what
    went wrong.
    

    ref: https://github.com/google/or-tools/runs/3672547012?check_suite_focus=true

    https://github.com/scipopt/scip/blob/9444e80869f6ac42723f3a43712ca6d4ce0c20dc/src/amplmp/src/os.cpp#L107-L109

    Expected

    Have support of FreeBSD so we can use it in OR-Tools or at least a dummy function instead of this error message breaking the build ;) Also it seems that amplmp is only use to read some .nl file so it's sad to break the build for this "optional" feature... https://github.com/scipopt/scip/blob/9444e80869f6ac42723f3a43712ca6d4ce0c20dc/src/amplmp/README#L2

    Annexe

    You can found our Vagrantfile here: https://github.com/google/or-tools/blob/master/cmake/vagrant/freebsd/cpp/Vagrantfile

    note: I think it should be easy to adapt it to only build SCIP starting from your repo to get rid of or-tools shenanigan and/or add it as a CI job to this repo (if you are willing to use github action workflow) ;)

    opened by Mizux 7
  • Getting Full Search Tree

    Getting Full Search Tree

    Hello Team,

    I apologize if this is not the best place to post this request for help; having spent a few days trying to read documentation and figure out what to do. I need to get the entire search tree used during computation of a solution to an LP. This tree I assume would have unexplored nodes, pruned nodes etc. Is this possible on SCIP? Thanks for your help and guidance.

    I compiled SCIP 7.0.3 on Mac and I am coding on C++.

    opened by izuwaa 7
  • LP parser should raise an error on invalid file, instead of silently failing + continuing to solve the model

    LP parser should raise an error on invalid file, instead of silently failing + continuing to solve the model

    Hello!

    I came across a nasty issue when trying to solve a model from an LP file.
    As far as I can tell, the SCIPOPT LP parser follows the LP specification of CPLEX:

    • https://www.scipopt.org/doc-7.0.3/html/reader__lp_8h.php
    • https://www.ibm.com/docs/en/icos/12.9.0?topic=cplex-lp-file-format-algebraic-representation

    From testing, I do know (now) that CPLEX does not support constant values within the constraint expressions. The specification itself does not explicitly state this:

    This is not the nicest definition, but something that can be worked with.

    Problem description

    If CPLEX is presented with an LP file that violates this rule, an error is raised:

    invalid.lp

    \none
    Maximize
     var_x 
    Subject To
     var_x - 1 = 0
    Bounds
     1 <= var_x <= 1
    Binary
     var_x
    End
    

    CPLEX output

    CPLEX> read invalid.lp
    CPLEX Error  1616: Line 5: Expected identifier, found '='.
    No file read.
    CPLEX>
    

    If the same LP is given to SCIPOPT, it is read without error, and solved: SCIPOPT output

    SCIP> read C:\temp\scip\invalid.lp
    
    read problem <C:\temp\scip\invalid.lp>
    ============
    
    original problem has 1 variables (1 bin, 0 int, 0 impl, 0 cont) and 1 constraints
    SCIP> optimize
    
    presolving:
    presolving (1 rounds: 1 fast, 0 medium, 0 exhaustive):
     1 deleted vars, 0 deleted constraints, 0 added constraints, 0 tightened bounds, 0 added holes, 0 changed sides, 0 changed coefficients
     0 implications, 0 cliques
    presolving detected infeasibility
    Presolving Time: 0.00
    
    SCIP Status        : problem is solved [infeasible]
    Solving Time (sec) : 0.00
    Solving Nodes      : 0
    Primal Bound       : -1.00000000000000e+20 (objective limit, 0 solutions)
    Dual Bound         : +1.00000000000000e+20
    Gap                : 0.00 %
    

    SCIP simply omits the constant in the constraint expression, and solves the (inconsistent) problem. In this case, the model becomes infeasible by omitting the constant. However, with a slight adjustment to the LB of var_x, the model will become feasible and the result will deviate from the intended/expected solution:

    feasible_invalid.lp

    \none
    Maximize
     var_x 
    Subject To
     var_x - 1 = 0
    Bounds
     0 <= var_x <= 1
    Binary
     var_x
    End
    

    SCIP output (var_x LB = 0)

    SCIP> read C:\temp\scip\feasible_invalid.lp
    
    read problem <C:\temp\scip\feasible_invalid.lp>
    ============
    
    original problem has 1 variables (1 bin, 0 int, 0 impl, 0 cont) and 1 constraints
    SCIP> optimize
    
    feasible solution found by trivial heuristic after 0.0 seconds, objective value 0.000000e+00
    presolving:
    presolving (1 rounds: 1 fast, 0 medium, 0 exhaustive):
     1 deleted vars, 0 deleted constraints, 0 added constraints, 1 tightened bounds, 0 added holes, 0 changed sides, 0 changed coefficients
     0 implications, 0 cliques
    Presolving Time: 0.00
    
    SCIP Status        : problem is solved [optimal solution found]
    Solving Time (sec) : 0.00
    Solving Nodes      : 0
    Primal Bound       : +0.00000000000000e+00 (1 solutions)
    Dual Bound         : +0.00000000000000e+00
    Gap                : 0.00 %
    

    If the same file is parsed + solved with, e.g., Gurobi (which supports constants in constraint expressions), the following output is produced: Gurobi output

    gurobi> m = read('feasible_invalid.lp')
    Read LP format model from file feasible_invalid.lp
    Reading time = 0.00 seconds
    : 1 rows, 2 columns, 2 nonzeros
    gurobi> m.optimize()
    Gurobi Optimizer version 9.5.0 build v9.5.0rc5 (win64)
    Thread count: 4 physical cores, 4 logical processors, using up to 4 threads
    Optimize a model with 1 rows, 2 columns and 2 nonzeros
    Model fingerprint: 0xf7308cbe
    Variable types: 1 continuous, 1 integer (1 binary)
    Coefficient statistics:
      Matrix range     [1e+00, 1e+00]
      Objective range  [1e+00, 1e+00]
      Bounds range     [1e+00, 1e+00]
      RHS range        [0e+00, 0e+00]
    Found heuristic solution: objective -0.0000000
    Presolve removed 1 rows and 2 columns
    Presolve time: 0.00s
    Presolve: All rows and columns removed
    
    Explored 0 nodes (0 simplex iterations) in 0.00 seconds (0.00 work units)
    Thread count was 1 (of 4 available processors)
    
    Solution count 2: 1 -0
    
    Optimal solution found (tolerance 1.00e-04)
    Best objective 1.000000000000e+00, best bound 1.000000000000e+00, gap 0.0000%
    gurobi>
    

    Expected behavior

    • Main priority
      • Given the current LP file format specification that SCIPOPT is following, I'd expect an error message when an invalid LP file is given. The silent fail might cause serious issues, since the resulting model might actually be feasible - but the solution differs from the "intended" model.
    • Nice to have
      • Add support for constant values in constraints, similar to Gurobi's LP file format

    I hope this is the correct address for reporting such an issue. If this is not the case, please let me know where I can/should submit it.

    Best Regards,
    Jannick

    opened by jannicklange 6
  • Setter for freqofs

    Setter for freqofs

    Merry Christmas, I am looking into SCIP for a research project and was wondering whether there is a specific reason why certain heuristic parameters are only exposed by getter methods in the public API. This PR includes an example. The option of setting consistent heuristic parameters would be useful for me (like implemented with SCIPheurSetFreq). Best regards, Anton Hinneck

    opened by antonhinneck 5
  • IPOPT Linear Solver HSL_MA97 Cause Segmentation Fault

    IPOPT Linear Solver HSL_MA97 Cause Segmentation Fault

    Hi, I found bug on SCIP concurrentopt function. I compiled IPOPT with HSL libraries contains HSL_MA97 which use OpenMP for parallel computation. I configure SCIP to use HSL_MA97 via command "set nlpi ipopt linear_solver ma97". When I try to start concurrentopt fails. I think, this problem hard to fix but some explanation can be added for wrong settings. Thanks for for your hard work.

    opened by chemrgineer 4
  • SCIP-7.0.3 breaks with zimpl-3.3.6: hidden symbol `xlp_conname_exists' in CMakeFiles/scip.dir/scip/reader_zpl.c.o is referenced by DSO

    SCIP-7.0.3 breaks with zimpl-3.3.6: hidden symbol `xlp_conname_exists' in CMakeFiles/scip.dir/scip/reader_zpl.c.o is referenced by DSO

    /usr/local/bin/ld: ../bin/scip: hidden symbol `xlp_conname_exists' in CMakeFiles/scip.dir/scip/reader_zpl.c.o is referenced by DSO
    /usr/local/bin/ld: final link failed: bad value
    c++: error: linker command failed with exit code 1 (use -v to see invocation)
    *** [bin/scip] Error code 1
    

    It appears that the cause is that xlp_conname_exists is defined in both SCIP and ZIMPL projects.

    OS: FreeBSD 13 clang-11

    build 
    opened by yurivict 4
  • CMake: CMAKE_C_EXTENSIONS=ON seems mandatory (with clang)

    CMake: CMAKE_C_EXTENSIONS=ON seems mandatory (with clang)

    TLDR: It seems the SCIP source depends on M_PI which is a GNU extension, i.e. compiling using -std=c99 won't work.

    Protocol

    If here: https://github.com/scipopt/scip/blob/a6142b7d1d7892f950b1e5127925f7c435151beb/src/CMakeLists.txt#L10-L12 I'm adding the line

    set(CMAKE_C_EXTENSIONS OFF)
    

    Then CMake will generate compile line using -std=c99 instead of the "default" -std=gnu99

    ref: https://cmake.org/cmake/help/latest/variable/CMAKE_CXX_EXTENSIONS.html note: You can also pass it on CMake configure line or could be given by a super project integrating SCIP from sources... note2: Usually CMake default enable extensions seems to have change 17months ago see https://github.com/Kitware/CMake/commit/f034b0f66338f37d4f637916cc42b9c4a4f30a32

    Observed

    note: I'm doing some integration tests of multithread SCIP so technically I building SCIP using through FetchContent() full project here: https://github.com/Mizux/scip-multithread

    cmake --build build -v
    ...
    [ 17%] Building C object _deps/scip-build/src/CMakeFiles/libscip.dir/scip/cons_soc.c.o
    cd /home/mizux/dev/scip-multithread/build/_deps/scip-build/src && /usr/bin/clang
     -I/home/mizux/dev/scip-multithread/build/_deps/scip-build
     -I/home/mizux/dev/scip-multithread/build/_deps/scip-src/src
     -I/home/mizux/dev/scip-multithread/build/_deps/zlib-build
     -I/home/mizux/dev/scip-multithread/build/_deps/zlib-src
     -fsanitize=thread -g -fPIC -fvisibility=hidden -std=c99 # SEE HERE the use of -std=c99
     -MD -MT
     _deps/scip-build/src/CMakeFiles/libscip.dir/scip/cons_soc.c.o
     -MF CMakeFiles/libscip.dir/scip/cons_soc.c.o.d
     -o CMakeFiles/libscip.dir/scip/cons_soc.c.o
     -c /home/mizux/dev/scip-multithread/build/_deps/scip-src/src/scip/cons_soc.c
    /home/mizux/dev/scip-multithread/build/_deps/scip-src/src/scip/cons_soc.c:1996:10: error: use of undeclared identifier 'M_PI'
       val = M_PI;
             ^
    /home/mizux/dev/scip-multithread/build/_deps/scip-src/src/scip/cons_soc.c:2238:13: error: use of undeclared identifier 'M_PI'
          val = M_PI / pow(2.0, (double) (i+1));
                ^
    /home/mizux/dev/scip-multithread/build/_deps/scip-src/src/scip/cons_soc.c:2313:19: error: use of undeclared identifier 'M_PI'
       vals[0] = tan( M_PI / pow(2.0, (double) (N+1)) );
                      ^
    3 errors generated.
    make[2]: *** [_deps/scip-build/src/CMakeFiles/libscip.dir/build.make:776: _deps/scip-build/src/CMakeFiles/libscip.dir/scip/cons_soc.c.o] Error 1
    make[2]: Leaving directory '/home/mizux/dev/scip-multithread/build'
    make[1]: *** [CMakeFiles/Makefile2:1057: _deps/scip-build/src/CMakeFiles/libscip.dir/all] Error 2
    make[1]: Leaving directory '/home/mizux/dev/scip-multithread/build'
    make: *** [Makefile:166: all] Error 2
    

    note: I tweaked the indent of the trace fun fact: PI only officially exist since C++20 (https://en.cppreference.com/w/cpp/numeric/constants)

    Proposal

    If i were you:

    1. I would be explicit, because in case of a super project build integrating scip with this option to OFF it will fail. Ie since it seems mandatory you should force it -> set(CMAKE_C_EXTENSIONS ON)
    2. add a define in case...
      #ifndef M_PI
      #define M_PI 3.14159265358979323846
      #endif
      

    Platform

    FYI

    %uname -a
    Linux nuc10i7 5.13.5-arch1-1 #1 SMP PREEMPT Sun, 25 Jul 2021 18:02:58 +0000 x86_64 GNU/Linux
    %gcc --version
    gcc (GCC) 11.1.0
    % clang --version
    clang version 12.0.1
    Target: x86_64-pc-linux-gnu
    Thread model: posix
    InstalledDir: /usr/bin
    
    build 
    opened by Mizux 4
  • Linux ARM64 Binary Support

    Linux ARM64 Binary Support

    Hi there,

    I was wondering if there will be an arm64/aarch64 binary of SCIP. I have used SCIP across all different platform (Windows, Linux x86_64, arm32). But currently run into some problem on Ubuntu arm64 (on a Raspberry Pi 4B). I have tried the Raspberry Pi binary but apparently it needs some kernel support to run arm32 binary.

    It will be great if you will release aarch64 binary in the future.

    Thanks!

    opened by alexcaoys 3
  • Outdated CppAD Library

    Outdated CppAD Library

    First, thank you for the work you have done. The version of CppAD used in SCIP (7.0.3) is 20180000.0. I tried to update the cppad folder contents inside the source codes, and it didn't work. I wonder if updating this library improves SCIP's performance? How can I update this library if there is improvement?

    opened by chemrgineer 3
  • Installation (CMake) Error

    Installation (CMake) Error

    I downloaded last version of SCIP from git repo. I compiled without any error. But I get this error massage when try to install with "sudo make install":

    fatal: unsafe repository ('/home/radxa/Downloads/scip' is owned by someone else)
    To add an exception for this directory, call:
    
            git config --global --add safe.directory /home/radxa/Downloads/scip
    CMake Error at scip_update_githash.cmake:12 (string):
      string sub-command REGEX, mode REPLACE needs at least 6 arguments total to
      command.
    
    
    make[2]: *** [CMakeFiles/scip_update_githash.dir/build.make:70: CMakeFiles/scip_update_githash] Error 1
    make[1]: *** [CMakeFiles/Makefile2:719: CMakeFiles/scip_update_githash.dir/all] Error 2
    make: *** [Makefile:166: all] Error 2
    

    I tried to add safe directory but nothing changed. I'm working on ARM architecture Radxa Zero.(cmake 3.23.1, Make 4.3)

    opened by chemrgineer 2
  • SCIP 8 concurrentopt

    SCIP 8 concurrentopt

    Hi, I'm trying to use concurrentopt mode in SCIP. I compiled with CPLEX and IPOPT. While configuring with CMake I activated OpenMP library. So there is no problem with functionality. But my problem is working with Pyomo. Pyomo can not use internal functions as far as I know. I checked "scip --help" command and there is "-c "command" : execute single line of dialog commands (can be used multiple times)". So that I decided to pass "-c concurrentopt" but its not working. I tried "scip -c concurrentopt -f example.nl" command and I get: "cannot mix batch mode '-c' and '-b' with file mode '-f'" Is there any other alternatives to run parallel in default?

    opened by chemrgineer 1
  • Installation fail - MacOS.

    Installation fail - MacOS.

    Mr Matthias suggested me to create an issue here. I understand that there has have already been a huge amount of issues that have been resolved with regards to installation, but something seems to be going haywire in my installation process and I am very keen to understand why and how to resolve it. Please, if you could see the my doings below.

    On downloading scip-8.0.0 from the official website, and following the commands listed here: https://github.com/scipopt/scip/blob/master/INSTALL.md. I get a weird error:

    -- Build shared libraries: ON
    -- Build type: Release
    -- Finding ZLIB
    -- Finding ZLIB - found
    -- Finding Readline
    -- Finding Readline - found
    -- Finding GMP
    -- Finding GMP - found
    -- Finding PAPILO
    CMake Error at CMakeLists.txt:298 (find_package):
    Could not find a package configuration file provided by "PAPILO" with any
    of the following names:
    
    PAPILOConfig.cmake
    papilo-config.cmake
    Add the installation prefix of "PAPILO" to CMAKE_PREFIX_PATH or set
    "PAPILO_DIR" to a directory containing one of the above files. If "PAPILO"
    provides a separate development package or SDK, be sure it has been
    installed.
    -- Configuring incomplete, errors occurred!
    

    I was wondering if you could please help me resolve this?

    Many thanks for your time on this.

    opened by Ishaanjolly 3
  • install fails

    install fails

    • scip-8.0.0

    make install output :

    //usr/local/lib/libreadline.so.8: undefined reference to tgetstr' //usr/local/lib/libreadline.so.8: undefined reference totputs' //usr/local/lib/libreadline.so.8: undefined reference to BC' //usr/local/lib/libreadline.so.8: undefined reference totgetent' //usr/local/lib/libreadline.so.8: undefined reference to tgetflag' //usr/local/lib/libreadline.so.8: undefined reference totgoto' //usr/local/lib/libreadline.so.8: undefined reference to UP' //usr/local/lib/libreadline.so.8: undefined reference totgetnum' //usr/local/lib/libreadline.so.8: undefined reference to `PC' collect2: error: ld returned 1 exit status gcg/src/CMakeFiles/gcg.dir/build.make:2211: recipe for target 'bin/gcg' failed make[2]: *** [bin/gcg] Error 1 CMakeFiles/Makefile2:2954: recipe for target 'gcg/src/CMakeFiles/gcg.dir/all' failed make[1]: *** [gcg/src/CMakeFiles/gcg.dir/all] Error 2 Makefile:165: recipe for target 'all' failed make: *** [all] Error 2

    opened by Domceng 1
  • Flaky Segfault in SCIPsolveConcurrent()

    Flaky Segfault in SCIPsolveConcurrent()

    DISCLAIMER: All details (and a minimal reproducible example) are in https://github.com/Mizux/scip-multithread/issues/2

    It seems, on GitHub linux hosted worker, the method SCIPsyncstoreGetWinner() will return -1 nearly each time Open Questions: * Why code didn't check the index value or retcode before using the return value ? * Why we have so many -1 return by SCIPsyncstoreGetWinner() ? * Why syncstore->lastsync is empty while SCIPtpiCollectJobs(jobid) seems to have correctly collected all results ?

    ref: https://github.com/Mizux/scip-multithread/issues/2#issuecomment-889866195

    opened by Mizux 4
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The Repository Contains the Set Way of Learning Cpplus With the help of programs And Notes.

Preface Since the C++ language varies so heavily between versions (e.g. C++0x, C++11, C++17, etc.), I will preface this cheat sheet by saying that the

Pawan Roshan Gupta 6 May 9, 2022
Different Example Programs from different programming languages

Example Programs Don't repeat the same program again. Code Refactoring and Code Cleanup are accepted Name the File According to the Program written in

Anjal Binayak 17 Mar 9, 2022
C++ Programs from Basic to Advanced lavel.

✨️ C++ Programs (Basic to Advanced Level) ??️ ??️ Local Environment Setup If you are still willing to set up your environment for C++, you need to hav

Atul Tripathi 1 Oct 23, 2021
Programs and my Notes from the course: "Beginning c++ Programming - From Beginner to Beyond" by Dr. Frank J. Mitropoulos

Project Info Technology Stack Linux (Arch) Visual Studio Code GCC 11.1.0 (since GCC 11.1 the default target is gnu++17, a superset of C++17) Source Ud

Alok Shandilya 1 Oct 22, 2021
✨️ C Programs (Basic to Advanced Level - Chapter wise) 🚀️

✨️ C Programs (Basic to Advanced Level - Chapter wise) ??️ ??️ Tutorial Table Days Topics Day 1 Chapter 1: Variables, Constants, and Keywords Day 2 Ch

Atul Tripathi 1 Oct 22, 2021
Simple hook that prevent to halt Java Virtual Machine (mostly used in hacking java programs)

JavaExitHook Simple hook that prevent to halt Java Virtual Machine (mostly used in hacking java programs) What is used for? Idea to create that simple

null 11 Dec 28, 2021
Arbitrary Precision provides C++ long integer types that behave as basic integer types. This library aims to be intuitive and versatile in usage, rather than fast.

Arbitrary Precision (AP) Cross-platform and cross-standard header-only arbitrary precision arithmetic library. Currently it offers integer types that

null 15 May 19, 2022
3D-Lidar Camera Calibration using planar Point to to camera Plane Constraint

3D-Lidar Camera Calibration using planar Point to to camera Plane Constraint

Subodh Mishra 60 May 31, 2022
Proletariat Graph-Learning Constraint Solver

Introduction Vertexy is a conflict-driven learning constraint solver that is focused on solving problems within graphs. Its primary development goal i

Proletariat Inc. 4 Jun 29, 2022
MIRACL Cryptographic SDK: Multiprecision Integer and Rational Arithmetic Cryptographic Library is a C software library that is widely regarded by developers as the gold standard open source SDK for elliptic curve cryptography (ECC).

MIRACL What is MIRACL? Multiprecision Integer and Rational Arithmetic Cryptographic Library – the MIRACL Crypto SDK – is a C software library that is

MIRACL 482 Jun 24, 2022
LibTomMath is a free open source portable number theoretic multiple-precision integer library written entirely in C.

libtommath This is the git repository for LibTomMath, a free open source portable number theoretic multiple-precision integer (MPI) library written en

libtom 520 Jun 25, 2022
Fastest Integer Compression

TurboPFor: Fastest Integer Compression TurboPFor: The new synonym for "integer compression" ?? (2019.11) ALL functions now available for 64 bits ARMv8

powturbo 616 Jun 23, 2022
MIRACL Cryptographic SDK: Multiprecision Integer and Rational Arithmetic Cryptographic Library is a C software library that is widely regarded by developers as the gold standard open source SDK for elliptic curve cryptography (ECC).

MIRACL What is MIRACL? Multiprecision Integer and Rational Arithmetic Cryptographic Library – the MIRACL Crypto SDK – is a C software library that is

MIRACL 483 Jun 27, 2022
A C++11 large integer library with effective high performance, simplistic in nature and also clean in the eyes.

BigIntegerCPP BigIntegerCPP is a C++11 port of large integer library used in CryptoLib4Pascal. It allows mostly parsing of numbers as strings in diffe

Telepati 25 Apr 22, 2022
Faster Non-Integer Sample Rate Conversion

Non-Integer Sample Rate Conversion This repository contains a comparison of sample-rate conversion (SRC) algorithms, with an emphasis on performance f

null 23 Mar 6, 2022
Long integer arithmetic.

LongInt Содержимое репозитория представляет из себя исходный код примитивного консольного калькулятора, который использует реализацию длинных чисел из

null 10 Jun 27, 2022
Simple long integer math library for C++

SLIMCPP Simple long integer math library for C++ SLIMCPP is C++ header-only library that implements long integers that exceed maximum size of native t

null 19 May 19, 2022
IntX is a C++11 port of IntX arbitrary precision Integer library with speed, about O(N * log N) multiplication/division algorithms implementation.

IntX IntX is a C++11 port of IntX arbitrary precision Integer library with speed, about O(N * log N) multiplication/division algorithms implementation

Telepati 9 Mar 9, 2022
C implementation of C++ Utility functions Integer Comparison Macros

C implementation of C++ Utility functions Integer Comparison Macros

Robert C. Seacord 15 May 27, 2022
Muriqui Optimizer - A convex mixed integer nonlinear programming solver

Muriqui Optimizer Muriqui Optimizer is a solver for convex Mixed Integer Nonlinear Programming (MINLP) problems. For more informations and user manual

null 4 Jan 21, 2022
wideint is a C++ implementation of wide exact-width integer types.

wideint - wide exact-width integer types Copyright (c) 2022 Joergen Ibsen About wideint is a C++ implementation of wide exact-width integer types. #in

Jørgen Ibsen 3 Jan 27, 2022
Arduino library for DHT sensors - integer only

DHTINT Arduino library for DHT sensors - integer only Description This is an experimental integer only library, based upon - https://github.com/RobTil

Rob Tillaart 5 Jun 16, 2022
C++ library for solving large sparse linear systems with algebraic multigrid method

AMGCL AMGCL is a header-only C++ library for solving large sparse linear systems with algebraic multigrid (AMG) method. AMG is one of the most effecti

Denis Demidov 528 Jun 22, 2022
Freecell Solver - a C library for automatically solving Freecell and some other variants of card Solitaire

The Freecell Solver Repository Root README Freecell Solver is an open source (distributed under the MIT/Expat licence) library, written in C, for atte

Shlomi Fish 48 May 31, 2022
Freecell Solver - a C library for automatically solving Freecell and some other variants of card Solitaire

The Freecell Solver Repository Root README Freecell Solver is an open source (distributed under the MIT/Expat licence) library, written in C, for atte

Shlomi Fish 49 Jun 24, 2022