pub unsafe extern fn LAPACKE_chegvx_work(matrix_layout: c_int,
itype: lapack_int,
jobz: c_char,
range: c_char,
uplo: c_char,
n: lapack_int,
a: *mut lapack_complex_float,
lda: lapack_int,
b: *mut lapack_complex_float,
ldb: lapack_int,
vl: c_float,
vu: c_float,
il: lapack_int,
iu: lapack_int,
abstol: c_float,
m: *mut lapack_int,
w: *mut c_float,
z: *mut lapack_complex_float,
ldz: lapack_int,
work: *mut lapack_complex_float,
lwork: lapack_int,
rwork: *mut c_float,
iwork: *mut lapack_int,
ifail: *mut lapack_int)
-> lapack_int