pub unsafe extern fn dbdsqr_(uplo: *const c_char,
n: *const lapack_int,
ncvt: *const lapack_int,
nru: *const lapack_int,
ncc: *const lapack_int,
d: *mut c_double,
e: *mut c_double,
vt: *mut c_double,
ldvt: *const lapack_int,
u: *mut c_double,
ldu: *const lapack_int,
c: *mut c_double,
ldc: *const lapack_int,
work: *mut c_double,
info: *mut lapack_int)