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

From: Rik
Subject: [Octave-bug-tracker] [bug #49091] MinGW std::acosh less accurate than Linux versions
Date: Thu, 4 Aug 2022 17:39:21 -0400 (EDT)

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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