pub unsafe extern "C" fn chegst_(
itype: *const lapack_int,
uplo: *const c_char,
n: *const lapack_int,
a: *mut lapack_complex_float,
lda: *const lapack_int,
b: *const lapack_complex_float,
ldb: *const lapack_int,
info: *mut lapack_int,
)