pub unsafe extern fn sspgv_(itype: *const lapack_int,
jobz: *const c_char,
uplo: *const c_char,
n: *const lapack_int,
ap: *mut c_float,
bp: *mut c_float,
w: *mut c_float,
z: *mut c_float,
ldz: *const lapack_int,
work: *mut c_float,
info: *mut lapack_int)