Function GLKMatrix4Invert 

pub unsafe extern "C-unwind" fn GLKMatrix4Invert(
    matrix: GLKMatrix4,
    is_invertible: *mut bool,
) -> GLKMatrix4

👎Deprecated: The OpenGL API is deprecated by Apple

Available on crate features GLKMathTypes and GLKMatrix4 only.

Safety

is_invertible must be a valid pointer or null.