From: Stefan Weinzierl <stefanw@thep.physik.uni-mainz.de>
Date: Sat, 12 Apr 2014 11:32:20 +0000 (+0300)
Subject: G_do_hoelder: fix the transformation of the imaginary part.
X-Git-Tag: release_1-6-3~13
X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=commitdiff_plain;h=d023220cece92637c3e55051f127650f2131de44;hp=d023220cece92637c3e55051f127650f2131de44

G_do_hoelder: fix the transformation of the imaginary part.

The G_do_hoelder function transforms the arguments as z -> 1-z.
If z has an imaginary part, the sign of the imagniary part transforms
as s -> -s.
In the special case where z is real and > 1, the transformed value is
real and < 0. For (transformed) real negative values of z the sign of
the imaginary part is not relevant (there are no branch cuts). The code
requires that in this case the sign takes the default value +1.
This is now fixed.
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