Program support utilities

C++

Language

Headers

Freestanding and hosted implementations

Named requirements

Language support library

Concepts library (C++20)

Diagnostics library

Utilities library

Strings library

Containers library

Algorithms library

Iterators library

Numerics library

Input/output library

Localizations library

Regular expressions library (C++11)

Atomic operations library (C++11)

Thread support library (C++11)

Filesystem library (C++17)

Technical Specifications

Utilities library

Type support (basic types, RTTI, type traits)
Dynamic memory management
Error handling
Program utilities
Variadic functions
Library feature-test macros
Date and time
Function objects
initializer_list (C++11)
bitset
hash (C++11)
integer_sequence (C++14)
Relational operators (deprecated)
rel_ops::operator!=rel_ops::operator>rel_ops::operator<=rel_ops::operator>=
Comparisons (C++20)
strong_order weak_order partial_order strong_equal weak_equal	strong_ordering weak_ordering partial_ordering strong_equality weak_equality	is_eqis_neqis_ltis_lteqis_gtis_gteq
common_comparison_category
Common vocabulary types
pair tuple (C++11) apply (C++17) make_from_tuple (C++17)	optional (C++17) any (C++17) variant (C++17)
Swap, forward and move
swap
exchange (C++14)
forward (C++11)
move (C++11)
move_if_noexcept (C++11)
Elementary string conversions
to_chars (C++17)
from_chars (C++17)
chars_format (C++17)
Type operations
declval (C++11)
as_const (C++17)

Program support utilities

Program termination
abort exit quick_exit (C++11) _Exit (C++11)	atexit at_quick_exit (C++11) EXIT_SUCCESSEXIT_FAILURE
Communicating with the environment
system	getenv
Signals
signal raise sig_atomic_t	SIG_DFLSIG_IGN SIG_ERR
Signal types
SIGABRTSIGFPESIGILLSIGINTSIGSEGVSIGTERM
Non-local jumps
setjmp
longjmp
Types
jmp_buf

Program termination

The following functions manage program termination and resource cleanup.

Defined in header <cstdlib>
abort	causes abnormal program termination (without cleaning up) (function)
exit	causes normal program termination with cleaning up (function)
quick_exit (C++11)	causes quick program termination without completely cleaning up (function)
_Exit (C++11)	causes normal program termination without cleaning up (function)
atexit	registers a function to be called on std::exit() invocation (function)
at_quick_exit (C++11)	registers a function to be called on quick_exit invocation (function)
EXIT_SUCCESSEXIT_FAILURE	indicates program execution execution status (macro constant)

Communicating with the environment

system	calls the host environment's command processor (function)
getenv	access to the list of environment variables (function)

Signals

Several functions and macro constants for signal management are provided.

Defined in header <csignal>
signal	sets a signal handler for particular signal (function)
raise	runs the signal handler for particular signal (function)
sig_atomic_t	the integer type that can be accessed as an atomic entity from an asynchronous signal handler (typedef)
SIG_DFLSIG_IGN	defines signal handling strategies (macro constant)
SIG_ERR	return value of signal specifying that an error was encountered (macro constant)
Signal types
SIGABRTSIGFPESIGILLSIGINTSIGSEGVSIGTERM	defines signal types (macro constant)

Non-local jumps

Defined in header <csetjmp>
setjmp	saves the context (function macro)
longjmp	jumps to specified location (function)
Types
jmp_buf	execution context type (typedef)