C/C++ in Python for Dummies

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Project links

Homepage

Project description

You have no clue about C/C++, but want to boost Python using C/C++ code? Try this!

cinpy is made for people who never coded in C/C++, but want to use C/C++ functions/algorithms found somewhere on the internet (GitHub, Stack Overflow, ChatGPT …) in their Python code to speed things up.

This module is not for massive frameworks, only for small scripts/code snippets. It is very simple and straightforward to use.

pip install cinpy

Please install:

MSVC ..... C++ x64/x86 build tools from:

https://visualstudio.microsoft.com/thank-you-downloading-visual-studio/?sku=Community&channel=Release&version=VS2022&source=VSLandingPage&passive=false&cid=2030

Localize the following files (Version number might vary) and copy their path:

vcvarsall_bat = r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat"

cl_exe = r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\cl.exe"

link_exe = r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\link.exe"

Examples

from cinpy import CreateCppDll



variable_for_function_creation = (

    r"!CT_DATA_DTYPE!_!CT_DATA_DTYPE2!_!C_FUNCTION_NAME!_!CT_DATA_DTYPE3!"

)

appc = CreateCppDll(

    cfunctioname="cppradixsort",

    cfunction=rf"""

!DTYPE_EXPLANATIONC!

__declspec(dllexport) void {variable_for_function_creation}

(!C_DATA_DTYPE! * indatav1,size_t size, 

!C_DATA_DTYPE2! * indatav2, 

!C_DATA_DTYPE3! * outdatav )

{{

   std::vector<!C_DATA_DTYPE!> v(indatav1, 

   indatav1 + size);

   concurrency::parallel_radixsort(begin(v), end(v));

   std::copy(v.begin(), v.begin()+size, outdatav);

}}

""",

    samedtypes=("!C_DATA_DTYPE!", "!C_DATA_DTYPE3!"),

    modulename="radixsortcpp",

    variable_for_function_creation=variable_for_function_creation,

    cheader="""

    //#include <iostream>

    //#include <stdio.h>

    //#include <algorithm>    // std::replace_if

    #include <vector>       // std::vector

    //#include <functional> 

    //#include <conio.h>

    #include <ppl.h>



    """,

    cfooter="",

    ignored_dtypes1=(

        "bool",

        # "signed char",

        # "unsigned char",

        # "short",

        # "unsigned short",

        # "int",

        # "unsigned int",

        # "long",

        # "unsigned long",

        # "long long",

        # "unsigned long long",

        "float",

        "double",

        "long double",

        "float complex",

        "double complex",

        "long double complex",

    ),

    ignored_dtypes2=(

        "bool",

        # "signed char",

        # "unsigned char",

        # "short",

        # "unsigned short",

        # "int",

        # "unsigned int",

        # "long",

        # "unsigned long",

        # "long long",

        # "unsigned long long",

        "float",

        "double",

        "long double",

        "float complex",

        "double complex",

        "long double complex",

    ),

    ignored_dtypes3=(

        "bool",

        # "signed char",

        # "unsigned char",

        # "short",

        # "unsigned short",

        # "int",

        # "unsigned int",

        # "long",

        # "unsigned long",

        # "long long",

        # "unsigned long long",

        "float",

        "double",

        "long double",

        "float complex",

        "double complex",

        "long double complex",

    ),

    vcvarsall_bat=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat",

    cl_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\cl.exe",

    link_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\link.exe",

    compilerflags=("/std:c++17", "/Ferelease", "/EHsc", "/MT", "/O2", "/bigobj"),

)

appc.compile_cpp_code()



# compile and run

from cinpy.radixsortcppmodule import cppradixsort

import numpy as np

arr1 = np.random.randint(0, 10000, 800000000)

arr2 = np.array([],dtype=arr1.dtype)

sodi=cppradixsort(arr1,arr2,arr1.dtype)



import numpy as np

from time import perf_counter

arr1 = np.random.randint(0, 10000, 800000000)

arr2 = np.array([],dtype=arr1.dtype)

start=perf_counter()

sodi=cppradixsort(arr1,arr2,arr1.dtype)

print('c++: ', perf_counter()-start)

start=perf_counter()

np.sort(arr1)

print('numpy: ', perf_counter()-start)

c++:  5.262247000000002

numpy:  36.521482199999994





import numpy as np

from time import perf_counter

arr1 = np.random.randint(0, 10000, 800000000).tolist()

start=perf_counter()

arr1.sort()

print('python: ', perf_counter()-start)

python:  158.9699383

from cinpy import CreateCppDll



variable_for_function_creation = (

    r"!CT_DATA_DTYPE!_!CT_DATA_DTYPE2!_!C_FUNCTION_NAME!_!CT_DATA_DTYPE3!"

)

appc = CreateCppDll(

    cfunctioname="cppbufferedsort",

    cfunction=rf"""

!DTYPE_EXPLANATIONC!

__declspec(dllexport) void {variable_for_function_creation}(!C_DATA_DTYPE! * indatav1,size_t size, !C_DATA_DTYPE2! * indatav2, !C_DATA_DTYPE3! * outdatav )

{{

   std::vector<!C_DATA_DTYPE!> v(indatav1, indatav1 + size);

   concurrency::parallel_buffered_sort(begin(v), end(v));

   std::copy(v.begin(), v.begin()+size, outdatav);

}}

""",

    samedtypes=("!C_DATA_DTYPE!", "!C_DATA_DTYPE3!"),

    modulename="bufferedsortcpp",

    variable_for_function_creation=variable_for_function_creation,

    cheader="""

    //#include <iostream>

    //#include <stdio.h>

    //#include <algorithm>    // std::replace_if

    #include <vector>       // std::vector

    //#include <functional> 

    //#include <conio.h>

    #include <ppl.h>



    """,

    cfooter="",

    ignored_dtypes1=(

        "bool",

        # "signed char",

        # "unsigned char",

        # "short",

        # "unsigned short",

        # "int",

        # "unsigned int",

        # "long",

        # "unsigned long",

        # "long long",

        # "unsigned long long",

        "float",

        # "double",

        "long double",

        "float complex",

        "double complex",

        "long double complex",

    ),

    ignored_dtypes2=(

        "bool",

        # "signed char",

        # "unsigned char",

        # "short",

        # "unsigned short",

        # "int",

        # "unsigned int",

        # "long",

        # "unsigned long",

        # "long long",

        # "unsigned long long",

        "float",

        # "double",

        "long double",

        "float complex",

        "double complex",

        "long double complex",

    ),

    ignored_dtypes3=(

        "bool",

        # "signed char",

        # "unsigned char",

        # "short",

        # "unsigned short",

        # "int",

        # "unsigned int",

        # "long",

        # "unsigned long",

        # "long long",

        # "unsigned long long",

        "float",

        # "double",

        "long double",

        "float complex",

        "double complex",

        "long double complex",

    ),

    vcvarsall_bat=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat",

    cl_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\cl.exe",

    link_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\link.exe",

    compilerflags=("/std:c++17", "/Ferelease", "/EHsc", "/MT", "/O2", "/bigobj"),

)

appc.compile_cpp_code()



"""

# Compile and run

from cinpy.bufferedsortcppmodule import cppbufferedsort

import numpy as np

arr1 = np.random.random(8000000)

arr2 = np.array([],dtype=arr1.dtype)

%timeit cppbufferedsort(arr1,arr2,arr1.dtype)

%timeit np.sort(arr1)

193 ms ± 7.74 ms per loop (mean ± std. dev. of 7 runs, 10 loops each)

568 ms ± 1.97 ms per loop (mean ± std. dev. of 7 runs, 1 loop each)



cppbufferedsort(arr1,arr2,arr1.dtype)

Out[3]:

array([5.84790262e-07, 6.10106611e-07, 6.50635063e-07, ...,

       9.99999442e-01, 9.99999492e-01, 9.99999790e-01])



np.sort(arr1)

Out[6]:

array([5.84790262e-07, 6.10106611e-07, 6.50635063e-07, ...,

       9.99999442e-01, 9.99999492e-01, 9.99999790e-01])

"""

from cinpy import CreateCppDll



variable_for_function_creation = (

    r"!CT_DATA_DTYPE!_!CT_DATA_DTYPE2!_!C_FUNCTION_NAME!_!CT_DATA_DTYPE3!"

)

appc = CreateCppDll(

    cfunctioname="variouscalculations",

    cfunction=rf"""

!DTYPE_EXPLANATIONC!

__declspec(dllexport) void {variable_for_function_creation}(!C_DATA_DTYPE! * indatav1,size_t size, !C_DATA_DTYPE2! * indatav2, !C_DATA_DTYPE3! * outdatav )

{{

        concurrency::parallel_for (size_t(0), size, [&](size_t u){{

        outdatav[u] = indatav1[u] * indatav2[0] / indatav2[1] + indatav2[2] - indatav2[3];}});

}}

""",

    samedtypes=(),

    modulename="calcvarious",

    variable_for_function_creation=variable_for_function_creation,

    cheader="""

    //#include <iostream>

    //#include <stdio.h>

    //#include <algorithm>    // std::replace_if

    //#include <vector>       // std::vector

    //#include <functional> 

    //#include <conio.h>

    #include <ppl.h>



    """,

    cfooter="",

    ignored_dtypes1=(

        "bool",

        # "signed char",

        # "unsigned char",

        # "short",

        # "unsigned short",

        # "int",

        # "unsigned int",

        # "long",

        # "unsigned long",

        # "long long",

        # "unsigned long long",

        "float",

        # "double",

        "long double",

        "float complex",

        "double complex",

        "long double complex",

    ),

    ignored_dtypes2=(

        "bool",

        # "signed char",

        # "unsigned char",

        # "short",

        # "unsigned short",

        # "int",

        # "unsigned int",

        # "long",

        # "unsigned long",

        # "long long",

        # "unsigned long long",

        "float",

        # "double",

        "long double",

        "float complex",

        "double complex",

        "long double complex",

    ),

    ignored_dtypes3=(

        "bool",

        # "signed char",

        # "unsigned char",

        # "short",

        # "unsigned short",

        # "int",

        # "unsigned int",

        # "long",

        # "unsigned long",

        # "long long",

        # "unsigned long long",

        "float",

        # "double",

        "long double",

        "float complex",

        "double complex",

        "long double complex",

    ),

    vcvarsall_bat=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat",

    cl_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\cl.exe",

    link_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\link.exe",

    compilerflags=("/std:c++17", "/Ferelease", "/EHsc", "/MT", "/O2", "/bigobj"),

)

appc.compile_cpp_code()





# Compile the code and run:

from cinpy.calcvariousmodule import variouscalculations

import numpy as np

inputarray3np = np.random.randint(0, 10000000, 1000000).astype(np.float64)

inputarray4np = np.array([40.2901,4.21,2.12,6.3])

cp=variouscalculations(inputarray3np,inputarray4np,np.float64)

nu= inputarray3np *40.2901/4.21+2.12-6.3



print(cp)

print(nu)

[15388258.80463183 85115406.42555821 75231240.03558196 ...

 34228493.34042756 68792824.6350119  86092819.36931117]

[15388258.80463183 85115406.42555821 75231240.03558196 ...

 34228493.34042756 68792824.6350119  86092819.36931117]

 

%timeit variouscalculations(inputarray3np,inputarray4np,np.float64)

2.04 ms ± 124 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)

%timeit inputarray3np *40.2901/4.21+2.12-6.3

10.2 ms ± 63.6 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)

from cinpy import CreateCppDll



variable_for_function_creation = (

    r"!CT_DATA_DTYPE!_!CT_DATA_DTYPE2!_!C_FUNCTION_NAME!_!CT_DATA_DTYPE3!"

)

appc = CreateCppDll(

    cfunctioname="multiplybyarray",

    cfunction=rf"""

!DTYPE_EXPLANATIONC!

__declspec(dllexport) void {variable_for_function_creation}(!C_DATA_DTYPE! * indatav1,size_t size, !C_DATA_DTYPE2! * indatav2, !C_DATA_DTYPE3! * outdatav )

{{

        concurrency::parallel_for (size_t(0), size, [&](size_t u){{

        outdatav[u] = indatav1[u] * indatav2[u];}});

}}

""",

    samedtypes=(),

    modulename="multiplyarrays",

    variable_for_function_creation=variable_for_function_creation,

    cheader="""

    //#include <iostream>

    //#include <stdio.h>

    //#include <algorithm>    // std::replace_if

    //#include <vector>       // std::vector

    //#include <functional> 

    //#include <conio.h>

    #include <ppl.h>



    """,

    cfooter="",

    ignored_dtypes1=(

        "bool",

        # "signed char",

        # "unsigned char",

        # "short",

        # "unsigned short",

        # "int",

        # "unsigned int",

        # "long",

        # "unsigned long",

        # "long long",

        # "unsigned long long",

        "float",

        # "double",

        "long double",

        "float complex",

        "double complex",

        "long double complex",

    ),

    ignored_dtypes2=(

        "bool",

        # "signed char",

        # "unsigned char",

        # "short",

        # "unsigned short",

        # "int",

        # "unsigned int",

        # "long",

        # "unsigned long",

        # "long long",

        # "unsigned long long",

        "float",

        # "double",

        "long double",

        "float complex",

        "double complex",

        "long double complex",

    ),

    ignored_dtypes3=(

        "bool",

        # "signed char",

        # "unsigned char",

        # "short",

        # "unsigned short",

        # "int",

        # "unsigned int",

        # "long",

        # "unsigned long",

        # "long long",

        # "unsigned long long",

        "float",

        # "double",

        "long double",

        "float complex",

        "double complex",

        "long double complex",

    ),

    vcvarsall_bat=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat",

    cl_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\cl.exe",

    link_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\link.exe",

    compilerflags=("/std:c++17", "/Ferelease", "/EHsc", "/MT", "/O2", "/bigobj"),

)

appc.compile_cpp_code()





# compile and run

from cinpy.multiplyarraysmodule import multiplybyarray

import numpy as np

inputarray3np = np.random.randint(0, 1005000, 8000000).astype(np.uint64)

inputarray4np = np.random.randint(0, 1022300, 8000000).astype(np.uint64)

%timeit multiplybyarray(inputarray3np,inputarray4np,np.uint64)

%timeit inputarray3np*inputarray4np

18.1 ms ± 757 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)

26.6 ms ± 163 µs per loop (mean ± std. dev. of 7 runs, 10 loops each)



multiplybyarray(inputarray3np,inputarray4np,np.uint64)

Out[4]:

array([218000641625, 493834462272,  38299985966, ...,  74381999748,

       168393582760, 515058090867], dtype=uint64)

inputarray3np*inputarray4np

Out[5]:

array([218000641625, 493834462272,  38299985966, ...,  74381999748,

       168393582760, 515058090867], dtype=uint64)

from cinpy import CreateCppDll



variable_for_function_creation = (

    r"!CT_DATA_DTYPE!_!CT_DATA_DTYPE2!_!C_FUNCTION_NAME!_!CT_DATA_DTYPE3!"

)

appc = CreateCppDll(

    cfunctioname="multiplybynumber",

    cfunction=rf"""

!DTYPE_EXPLANATIONC!

__declspec(dllexport) void {variable_for_function_creation}(!C_DATA_DTYPE! * indatav1,size_t size, !C_DATA_DTYPE2! * indatav2, !C_DATA_DTYPE3! * outdatav )

{{

        concurrency::parallel_for (size_t(0), size, [&](size_t u){{

        outdatav[u] = indatav1[u] * indatav2[0];}});

}}

""",

samedtypes=(),

    modulename="mulbyonenumber",

    variable_for_function_creation=variable_for_function_creation,

    cheader="""

    //#include <iostream>

    //#include <stdio.h>

    //#include <algorithm>    // std::replace_if

    //#include <vector>       // std::vector

    //#include <functional> 

    //#include <conio.h>

    #include <ppl.h>



    """,

    cfooter="",

    ignored_dtypes1=(

        "bool",

        # "signed char",

        # "unsigned char",

        # "short",

        # "unsigned short",

        # "int",

        # "unsigned int",

        # "long",

        # "unsigned long",

        # "long long",

        # "unsigned long long",

        "float",

        # "double",

        "long double",

        "float complex",

        "double complex",

        "long double complex",

    ),

    ignored_dtypes2=(

        "bool",

        # "signed char",

        # "unsigned char",

        # "short",

        # "unsigned short",

        # "int",

        # "unsigned int",

        # "long",

        # "unsigned long",

        # "long long",

        # "unsigned long long",

        "float",

        # "double",

        "long double",

        "float complex",

        "double complex",

        "long double complex",

    ),

    ignored_dtypes3=(

        "bool",

        # "signed char",

        # "unsigned char",

        # "short",

        # "unsigned short",

        # "int",

        # "unsigned int",

        # "long",

        # "unsigned long",

        # "long long",

        # "unsigned long long",

        "float",

        # "double",

        "long double",

        "float complex",

        "double complex",

        "long double complex",

    ),

    vcvarsall_bat=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat",

    cl_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\cl.exe",

    link_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\link.exe",

    compilerflags=("/std:c++17", "/Ferelease", "/EHsc", "/MT", "/O2", "/bigobj"),

)

appc.compile_cpp_code()



# compile and run



from cinpy.mulbyonenumbermodule import multiplybynumber

import numpy as np

inputarray3np = np.random.randint(0, 100000, 8000000).astype(np.float64)

inputarray4np = np.array([2.345122],dtype=np.float64)

%timeit multiplybynumber(inputarray3np,inputarray4np,np.float64)

%timeit inputarray3np*inputarray4np[0]

14.5 ms ± 99 µs per loop (mean ± std. dev. of 7 runs, 100 loops each)

22.1 ms ± 131 µs per loop (mean ± std. dev. of 7 runs, 10 loops each)



multiplybynumber(inputarray3np,inputarray4np,np.float64)

Out[10]:

array([221388.897288, 123871.689162,  40683.176456, ..., 222221.415598,

        73761.122266,  69851.803892])

inputarray3np*inputarray4np[0]

Out[11]:

array([221388.897288, 123871.689162,  40683.176456, ..., 222221.415598,

        73761.122266,  69851.803892])







# There is also a second version (if you need to pass more variables)



from cinpy import CreateCppDllv2



cppco = CreateCppDllv2(

    modulename="cppsort",

    # "module" will be added to "cppsort"

    # This is how to import it after compiling the code:

    # from cinpy.cppsortmodule import cppradixsort

    cheader="""

#include <vector>       // std::vector

#include <ppl.h>



""",  # Code before the functions in the .cpp file -> imports etc.

    cfooter="",  # Code after the functions in the .cpp file

    cfunctioname="cppradixsort",

    # This is the name of the C++ function in Python, this is how you import it:

    # from cinpy.cppsortmodule import cppradixsort

    var_variations={

        # cinpy creates various versions of the functions (I could not make

        # templates/function overloading work with Python) Create a dict with

        # all datadtypes that you want to use for each variable

        "!C_DATA_DTYPE1!": (  # "bool",

            "signed char",

            "unsigned char",

            "short",

            "unsigned short",

            "int",

            "unsigned int",

            "long",

            "unsigned long",

            "long long",

            "unsigned long long",  # "float",

            # "double",

            # "long double",

            # "float complex",

            # "double complex",

            # "long double complex",

        ),

        "!C_DATA_DTYPE2!": ("size_t",),

        "!C_DATA_DTYPE3!": (  # "bool",

            "signed char",

            "unsigned char",

            "short",

            "unsigned short",

            "int",

            "unsigned int",

            "long",

            "unsigned long",

            "long long",

            "unsigned long long",  # "float",

            # "double",

            # "long double",

            # "float complex",

            # "double complex",

            # "long double complex",

        ),

        "!C_DATA_DTYPE4!": ("size_t",),

        "!C_DATA_DTYPE5!": (  # "bool",

            "signed char",

            "unsigned char",

            "short",

            "unsigned short",

            "int",

            "unsigned int",

            "long",

            "unsigned long",

            "long long",

            "unsigned long long",  # "float",

            # "double",

            # "long double",

            # "float complex",

            # "double complex",

            # "long double complex",

        ),

        "!C_DATA_DTYPE6!": ("size_t",),

    },

    dtypemustbeequal=[("!C_DATA_DTYPE1!", "!C_DATA_DTYPE3!", "!C_DATA_DTYPE5!")],

    # "!C_DATA_DTYPE1!", "!C_DATA_DTYPE3!", "!C_DATA_DTYPE5!" will always have the same Datatype

    fu=rf"""

__declspec(dllexport) void variable_for_function_creation

(!C_DATA_DTYPE1! * indatav1,!C_DATA_DTYPE2!  size1,

!C_DATA_DTYPE3! * indatav2,!C_DATA_DTYPE4!  size2,

!C_DATA_DTYPE5! * indatav3,!C_DATA_DTYPE6! size3  )

{{

   std::vector<!C_DATA_DTYPE1!> v(indatav1,

   indatav1 + size1);

   concurrency::parallel_radixsort(begin(v), end(v));

   std::copy(v.begin(), v.begin()+size1, indatav3);



   std::vector<!C_DATA_DTYPE1!> v2(indatav1, indatav1 + size1);

   concurrency::parallel_buffered_sort(begin(v2), end(v2));

   std::copy(v2.begin(), v2.begin()+size1, indatav2);





}}""",

    # The C++ code, use the keys in the dict for the data types, don't change the function name:  variable_for_function_creation

)

cppco.compile_cpp_code(

    vcvarsall_bat=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Auxiliary\Build\vcvarsall.bat",

    cl_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\cl.exe",

    link_exe=r"C:\Program Files\Microsoft Visual Studio\2022\Community\VC\Tools\MSVC\14.34.31933\bin\Hostx86\x64\link.exe",

    compilerflags=("/std:c++20", "/Ferelease", "/EHsc", "/MT", "/O2", "/bigobj"),

) # Compile the code



#import the compiled code



from cinpy.cppsortmodule import cppradixsort

import numpy as np

inputarray = np.array([6,3,2,64,2,46],dtype=np.uint8)

npbufferedsort = np.zeros_like(inputarray)

npradixsort = np.zeros_like(inputarray)

len1=inputarray.size

len2=npbufferedsort.size

len3=npradixsort.size

# arguments always start with v + number, data dtype should be detected automatically

cppradixsort(v0=inputarray,v1=len1,v2=npbufferedsort,v3=len2,v4=npradixsort,v5=len3,)

print(inputarray)

print(npbufferedsort)

print(npradixsort)



# results

# [ 6  3  2 64  2 46]

# [ 2  2  3  6 46 64]

# [ 2  2  3  6 46 64]

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