[Octave-bug-tracker] [bug #49091] MinGW std::acosh less accurate than Linux versions

[Rik]

Follow-up Comment #25, bug #49091 (project octave):

Comment #24 does seem to indicate that the sign bit of the real part of the
complex number has an effect even when the value of the real portion is zero. 
That sure looks like a problem with the library.

One could test directly in the C++ code by doing


std::complex<double> zcpp (-x, -y)


which should create a complex value (-0, -10i).




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