Implemented flog2, flog10, and flogn, fixed fneg
Implemented flog2, flog10, and flogn, fixed fneg

xeyes works now

mietek/shoebill,jduerstock/shoebill,jduerstock/shoebill,landonf/shoebill,pruten/shoebill,pruten/shoebill,mietek/shoebill,landonf/shoebill,pruten/shoebill,pruten/shoebill,landonf/shoebill,mietek/shoebill,jduerstock/shoebill