pub unsafe extern fn LAPACKE_zgbtrs(matrix_layout: c_int,
trans: c_char,
n: lapack_int,
kl: lapack_int,
ku: lapack_int,
nrhs: lapack_int,
ab: *const lapack_complex_double,
ldab: lapack_int,
ipiv: *const lapack_int,
b: *mut lapack_complex_double,
ldb: lapack_int)
-> lapack_int