symengine.py

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Cythonization error: ``` [ 50%] Cythonizing /tmp/pip-install-qgianthy/symengine_7919c2d002ce4afe9fea82e7bdc6d9ec/build/lib.linux-x86_64-cpython-311/symengine/lib/symengine_wrapper.pyx performance hint: symengine_wrapper.pyx:5072:5: Exception check on '_ctypes_callback_lambda_real' will always require the GIL to be acquired. Possible solutions: 1. Declare '_ctypes_callback_lambda_real' as 'noexcept' if...

bjodah

Segmentationfault when instantiating Basic

1

The following Code leads to a segmentation fault: ``` import symengine symengine.Basic() ```

mwedemeyer

Small example with different values when using PyPI `symengine` and shared library

8

I recently noticed a numerical difference when using the `symengine` wheel package from PyPI and the one provided by Arch Linux. This leads to [a `qiskit` unit test to fail](https://github.com/Qiskit/qiskit/issues/12359#issuecomment-2104426621)....

iyanmv

`test_lambdify.py` unit test fails when using symengine compiled with `tcmalloc`

4

## Edited description (Jan 19, 2025) Test `test_lambdify__sympy()` from [test_lambdify.py](https://github.com/symengine/symengine.py/blob/master/symengine/tests/test_lambdify.py) fails when sympy is installed and symengine was compiled with `WITH_TCMALLOC=ON`. Minimal example: ```python import symengine as se import sympy...

iyanmv

Feature Request: Add Support for Boolean Logic with Variables in SymEngine

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I would like to request the addition of support for Boolean logic with variables in SymEngine. While SymEngine already supports Boolean constants (True and False), it currently lacks support for...

PhysicsQoo

Equality of two expressions similar to `sympy`

1

Hello! When trying to check the equality for two expressions I want to utilize a method similar to the `.equals()` method in `sympy` (see example below) ```python import sympy as...

dominikgeissler

.evalf() for matrices

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This may sound a bit baseless since I am very new to symengine and have recently been trying to convert my sympy based code to symengine for speed reasons. Currently,...

michaelwcl

Checking whether a given expression is polynomial

1

Hey! Using `symengine`, I was trying to check whether a given expression is polynomial. In the [C++ documentation](https://symengine.org/symengine/namespaceSymEngine.html#a5edc21801e92c0d5b42c66123a6ed621) there exists a method `is_polynomial()` which would be exactly what I was...

dominikgeissler

Source code of symengine lambdify function?

1

Hello, I was just wondering if there was a way to dynamically get the source code for a lambdify'd function in symengine? This is one of the last use cases...

Zhyrek

Subclassed Symbols that define `__getitem__` break `DenseMatrix`

2

Here's a self-contained test ```python from symengine import Symbol, DenseMatrix class MySymbol(Symbol): def __getitem__(self, x): pass x = Symbol("x") y = MySymbol("y") DenseMatrix([x]) # works fine DenseMatrix([y]) # SIGSEGV ```...

bocklund