std::chrono::hh_mm_ss<Duration>::is_negative,std::chrono::hh_mm_ss<Duration>::hours,std::chrono::hh_mm_ss<Duration>::minutes,std::chrono::hh_mm_ss<Duration>::seconds,std::chrono::hh_mm_ss<Duration>::subseconds

From cppreference.com

Compiler support
Freestanding and hosted
Language
Standard library
Standard library headers
Named requirements
Feature test macros(C++20)
Language support library
Concepts library(C++20)
Diagnostics library
Memory management library
Metaprogramming library(C++11)
General utilities library
Containers library
Iterators library
Ranges library(C++20)
Algorithms library
Strings library
Text processing library
Numerics library
Date and time library
Input/output library
Filesystem library(C++17)
Concurrency support library(C++11)
Execution control library(C++26)
Technical specifications
Symbols index
External libraries

Time zone
tzdb (C++20)
tzdb_list (C++20)
get_tzdbget_tzdb_listreload_tzdbremote_version (C++20)(C++20)(C++20)(C++20)
sys_info (C++20)
local_info (C++20)
nonexistent_local_time (C++20)
ambiguous_local_time (C++20)
locate_zone (C++20)
current_zone (C++20)
time_zone (C++20)
choose (C++20)
zoned_traits (C++20)
zoned_time (C++20)
time_zone_link (C++20)
leap_second (C++20)
leap_second_info (C++20)
get_leap_second_info (C++20)
C-style date and time

Member functions
hh_mm_ss::hh_mm_ss
hh_mm_ss::is_negativehh_mm_ss::hourshh_mm_ss::minuteshh_mm_ss::secondshh_mm_ss::subseconds
hh_mm_ss::operator precisionhh_mm_ss::to_duration
Non-member functions
operator<<
Helper classes
formatter<std::chrono::hh_mm_ss>

constexprbool is_negative()constnoexcept;	(1)
constexprstd::chrono::hours hours()constnoexcept;	(2)
constexprstd::chrono::minutes minutes()constnoexcept;	(3)
constexprstd::chrono::seconds seconds()constnoexcept;	(4)
constexpr precision subseconds()constnoexcept;	(5)

Obtains the components of the stored "broken down" time.

Letd be the represented duration:

1)true ifd is negative,false otherwise.

5)abs(d)- hours()- minutes()- seconds() ifstd::chrono::treat_as_floating_point_v<precision::rep> istrue; otherwisestd::chrono::duration_cast<precision>(abs(d)- hours()- minutes()- seconds()).