C++ (Cpp) FLOAT_ADD_INCREMENTAL Examples

Example #1

File: HelpersOperationBinaryInplaceAdd.c Project: kayhayen/Nuitka

bool BINARY_OPERATION_ADD_FLOAT_FLOAT_INPLACE(PyObject **operand1, PyObject *operand2) {
    assert(operand1);
    CHECK_OBJECT(*operand1);
    CHECK_OBJECT(operand2);
    assert(PyFloat_CheckExact(*operand1));
    assert(PyFloat_CheckExact(operand2));

    if (Py_REFCNT(*operand1) == 1) {
        return FLOAT_ADD_INCREMENTAL(operand1, operand2);
    }

    PyObject *result = PyNumber_InPlaceAdd(*operand1, operand2);

    if (unlikely(result == NULL)) {
        return false;
    }

    // We got an object handed, that we have to release.
    Py_DECREF(*operand1);

    // That's our return value then. As we use a dedicated variable, it's
    // OK that way.
    *operand1 = result;

    return true;
}

Example #2

File: operations.hpp Project: gitter-badger/Nuitka

NUITKA_MAY_BE_UNUSED static bool BINARY_OPERATION_ADD_INPLACE( PyObject **operand1, PyObject *operand2 )
{
    assert( operand1 );
    CHECK_OBJECT( *operand1 );
    CHECK_OBJECT( operand2 );

#if PYTHON_VERSION < 300
    // Something similar for Python3 should exist too.
    if ( PyInt_CheckExact( *operand1 ) && PyInt_CheckExact( operand2 ) )
    {
        long a, b, i;

        a = PyInt_AS_LONG( *operand1 );
        b = PyInt_AS_LONG( operand2 );

        i = a + b;

        // Detect overflow, in which case, a "long" object would have to be
        // created, which we won't handle here. TODO: Add an else for that
        // case.
        if (likely(!( (i^a) < 0 && (i^b) < 0 ) ))
        {
            PyObject *result = PyInt_FromLong( i );
            Py_DECREF( *operand1 );

            *operand1 = result;

            return true;
        }
    }
#endif

#if PYTHON_VERSION < 300
    if ( Py_REFCNT( *operand1 ) == 1 )
    {
        // We more or less own the operand, so we might re-use its storage and
        // execute stuff in-place.
        if ( PyString_CheckExact( *operand1 ) &&
             !PyString_CHECK_INTERNED( *operand1 ) &&
             PyString_CheckExact( operand2 ) )
        {
            return STRING_ADD_INCREMENTAL( operand1, operand2 );
        }
        else if ( PyFloat_CheckExact( *operand1 ) &&
                  PyFloat_CheckExact( operand2 ) )
        {
            return FLOAT_ADD_INCREMENTAL( operand1, operand2 );

        }
    }

    // Strings are to be treated differently.
    if ( PyString_CheckExact( *operand1 ) && PyString_CheckExact( operand2 ) )
    {
        PyString_Concat( operand1, operand2 );
        return !ERROR_OCCURRED();
    }
#else
    if ( Py_REFCNT( *operand1 ) == 1 )
    {
        // We more or less own the operand, so we might re-use its storage and
        // execute stuff in-place.
        if ( PyUnicode_CheckExact( *operand1 ) &&
             !PyUnicode_CHECK_INTERNED( *operand1 ) &&
             PyUnicode_CheckExact( operand2 ) )
        {
            return UNICODE_ADD_INCREMENTAL( operand1, operand2 );
        }
        else if ( PyFloat_CheckExact( *operand1 ) &&
                  PyFloat_CheckExact( operand2 ) )
        {
            return FLOAT_ADD_INCREMENTAL( operand1, operand2 );
        }
    }

    // Strings are to be treated differently.
    if ( PyUnicode_CheckExact( *operand1 ) && PyUnicode_CheckExact( operand2 ) )
    {
        PyObject *result = PyUnicode_Concat( *operand1, operand2 );

        if (unlikely( result == NULL ))
        {
            return false;
        }

        Py_DECREF( *operand1 );
        *operand1 = result;

        return true;
    }
#endif

    PyObject *result = PyNumber_InPlaceAdd( *operand1, operand2 );

    if (unlikely( result == NULL ))
    {
        return false;
    }

    // We got an object handed, that we have to release.
    Py_DECREF( *operand1 );

    // That's our return value then. As we use a dedicated variable, it's
    // OK that way.
    *operand1 = result;

    return true;
}