Improve abs(arg).
authorVladimir Kisil <kisilv@maths.leeds.ac.uk>
Wed, 22 Apr 2015 21:21:53 +0000 (23:21 +0200)
committerRichard Kreckel <kreckel@ginac.de>
Wed, 22 Apr 2015 21:21:53 +0000 (23:21 +0200)
commit43e31c593da10e6bf3c726236d3d794bc428bd3c
tree36a60f40471954dbd2a02e67a9402ba1764debe2
parent0f7f5c00470b6f1d10b668e3a7b34438ed005d0f
Improve abs(arg).

Make abs(arg) return -arg if arg is negative or if -arg is known to be
nonnegative.
ginac/inifcns.cpp