lapack_sys::dtgexc_

pub unsafe extern fn dtgexc_(wantq: *mut c_int, wantz: *mut c_int, n: *mut c_int, a: *mut c_double, lda: *mut c_int, b: *mut c_double, ldb: *mut c_int, q: *mut c_double, ldq: *mut c_int, z: *mut c_double, ldz: *mut c_int, ifst: *mut c_int, ilst: *mut c_int, work: *mut c_double, lwork: *mut c_int, info: *mut c_int)