Frederic Bonnard 91142be1b2 Fix "Unit overflow in pow()" error ...

During tests on Debian/Ubuntu :
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=836983 a problem was
found when raising a unit to a negative power on some architectures.
By default some architectures have "char" being
unsigned such as the ones listed here and others (
https://wiki.debian.org/ArchitectureSpecificsMemo ).
I just forced the sign-ness of pow()'s argument which fixes the issue.

2017-12-08 17:38:35 +01:00

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