pub unsafe extern "C" fn arb_atan2(
z: *mut arb_struct,
b: *const arb_struct,
a: *const arb_struct,
prec: slong,
)pub unsafe extern "C" fn arb_atan2(
z: *mut arb_struct,
b: *const arb_struct,
a: *const arb_struct,
prec: slong,
)