[libre-riscv-dev] [Bug 208] implement CORDIC in a general way sufficient to do transcendentals

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=208

--- Comment #24 from Luke Kenneth Casson Leighton <lkcl at lkcl.net> ---
https://pypi.org/project/bigfloat/

i used python bigfloat about... 8 years ago, and just updated it:
it works well.  it also happens to work in a similar way to
python-gmpy2 by cython-wrapping mpfr... except that the debian
package maintainer for python-gmpy2 is not experienced enough
to do multi-python-version compiles.

python-bigfloat i specifically recommended because it has been
"wrapped" with additional functionality that makes it near-identical
to both the standard python "math" module *and* to the standard
python "float".

    from bigfloat import cos, sin, tan

therefore works

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