separating real and imaginary part of a symbolic expression

[Max Winkler]

Hey there,

I am considering to move from sympy to symengine, because of the way better performance. Currently I'm working on a project, where I need to calculate the imaginary and real part of a complex expression including symbolic values. In sympy this calculation are to slow for the aim of the program. Is there any possibility to extract the the real and imaginary part of a expression, if I know that the symbolic value is itself real?

Thanks,

Max

[Isuru Fernando]

Hi,

SymEngine doesn't have assumptions yet, but maybe you can replace "x" with "Abs(x)" so that assumptions are unneeded. (Abs is currently unimplemented, but should be easy to fix. https://github.com/symengine/symengine/issues/1381)

Also "as_real_imag" is not wrapped in python, so can't use it from python yet. (I've opened an issue at https://github.com/symengine/symengine.py/issues/210)


Isuru

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