Fix compilation error C2039: '_isnan' : is not a member of 'std' on Windows
Fix compilation error C2039: '_isnan' : is not a member of 'std' on Windows

tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot,tc3t/qoot