Fix SFINAE in C++ functions
Fix SFINAE in C++ functions

cython/cython,cython/cython,fabianrost84/cython,da-woods/cython,scoder/cython,cython/cython,da-woods/cython,ChristopherHogan/cython,fabianrost84/cython,cython/cython,scoder/cython,fabianrost84/cython,ChristopherHogan/cython,da-woods/cython,scoder/cython,da-woods/cython,ChristopherHogan/cython,scoder/cython,fabianrost84/cython,fabianrost84/cython