cpp/chrono/duration/operator ltlt

Inserts a textual representation of into.

Behaves as if it was implemented as

In other words, the stream flags, locale, and precision are determined by the stream, but any padding are determined using the entire output string.

The is determined based on  according to the following table.

For the last two rows of the table, and  in the suffix are  and  formatted as a decimal number with no leading zeroes, respectively.

Return value
A reference to the stream, i.e.,.