pub unsafe extern "C" fn dorcsd2by1_(
jobu1: *const c_char,
jobu2: *const c_char,
jobv1t: *const c_char,
m: *const lapack_int,
p: *const lapack_int,
q: *const lapack_int,
x11: *mut c_double,
ldx11: *const lapack_int,
x21: *mut c_double,
ldx21: *const lapack_int,
theta: *mut c_double,
u1: *mut c_double,
ldu1: *const lapack_int,
u2: *mut c_double,
ldu2: *const lapack_int,
v1t: *mut c_double,
ldv1t: *const lapack_int,
work: *mut c_double,
lwork: *const lapack_int,
iwork: *mut lapack_int,
info: *mut lapack_int
)