pub unsafe extern "C" fn Rdqagi(
f: integr_fn,
ex: *mut c_void,
bound: *mut f64,
inf: *mut c_int,
epsabs: *mut f64,
epsrel: *mut f64,
result: *mut f64,
abserr: *mut f64,
neval: *mut c_int,
ier: *mut c_int,
limit: *mut c_int,
lenw: *mut c_int,
last: *mut c_int,
iwork: *mut c_int,
work: *mut f64,
)