Function GetIpoptVersion 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn GetIpoptVersion(
    major: *mut c_int,
    minor: *mut c_int,
    release: *mut c_int,
)

Port of IpStdCInterface.cpp:GetIpoptVersion (Ipopt 3.14.18+). Writes the pounce crate’s major.minor.patch into the buffers. Any pointer may be NULL to skip that component.

Safety

Each non-NULL pointer must point at a writable int.