Function extern_spec_std_time_Duration_subsec_nanos 

pub fn extern_spec_std_time_Duration_subsec_nanos(self_: &Duration) -> u32

extern spec for ::std::time::Duration::subsec_nanos

This is not a real function: its only use is for documentation.

terminates

ghost

ensures

result@ == (self@ % 1_000_000_000)

ensures

result < 1_000_000_000_u32