Fix check for PROC_QUOTES mode

Since != has priority over &, the "if ((mode&PROC_QUOTES != 0))" check
is the same as "if (mode & (PROC_QUOTES!=0))" - not what the code
intends.

Change-Id: I14840a887f26c28f2bd0aee8704c79cf353164ad
Signed-off-by: Bernhard Rosenkränzer <Bernhard.Rosenkranzer@linaro.org>
Use fabsf() rather than abs()

abs() operates on integers -- to check floats accurately, fabsf
should be used.

Change-Id: I1a4e85f8f5e0d08ff38d307c5c31e2b6783ab7af
Signed-off-by: Bernhard Rosenkränzer <Bernhard.Rosenkranzer@linaro.org>