Use M_PI instead of defined value; use rad2deg()

* Replace defined values of PI with M_PI defined in <cmath>
* Use M_PI_2 instead of PI / 2.0
* Instances could be found with:

git grep 3.14 *.cxx *.hxx|grep define

* One instance is ignored:

sc/source/core/opencl/opinlinefun_statistical.cxx

* Replace *(180 / PI) with basegfx::rad2deg()
* Replace 2*PI/360 with basegfx::deg2rad()
* Use atan2 instead of atan where it was more appropriate
+ atan2() handles all 4 quadrants
+ Extra conditions for different quadrants are removed

Change-Id: I083ee2e1427cd36ba0b8c38e4fe5f782d6486075
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/124229
Tested-by: Jenkins
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>

0 files changed, 0 insertions, 0 deletions