pub unsafe extern "C" fn dtrevc_(
side: *const c_char,
howmny: *const c_char,
select: *mut lapack_logical,
n: *const lapack_int,
t: *const c_double,
ldt: *const lapack_int,
vl: *mut c_double,
ldvl: *const lapack_int,
vr: *mut c_double,
ldvr: *const lapack_int,
mm: *const lapack_int,
m: *mut lapack_int,
work: *mut c_double,
info: *mut lapack_int
)