[header][C library] cstdlib (stdlib.h)

*[header][C library] cstdlib (stdlib.h)

<cstdlib> (stdlib.h)

C Standard General Utilities Library

This header defines several general purpose functions, including dynamic memory management, random number generation, communication with the environment, integer arithmetics, searching, sorting and converting.

Functions

String conversion

atof

Convert string to double (function )

atoi

Convert string to integer (function )

atol

Convert string to long integer (function )

atoll 

Convert string to long long integer (function )

strtod

Convert string to double (function )

strtof 

Convert string to float (function )

strtol

Convert string to long integer (function )

strtold 

Convert string to long double (function )

strtoll 

Convert string to long long integer (function )

strtoul

Convert string to unsigned long integer (function )

strtoull 

Convert string to unsigned long long integer (function )

Pseudo-random sequence generation

rand

Generate random number (function )

srand

Initialize random number generator (function )

Dynamic memory management

calloc

Allocate and zero-initialize array (function )

free

Deallocate memory block (function )

malloc

Allocate memory block (function )

realloc

Reallocate memory block (function )

Environment

abort

Abort current process (function )

atexit

Set function to be executed on exit (function )

at_quick_exit 

Set function to be executed on quick exit (function )

exit

Terminate calling process (function )

getenv

Get environment string (function )

quick_exit 

Terminate calling process quick (function )

system

Execute system command (function )

_Exit 

Terminate calling process (function )

Searching and sorting

bsearch

Binary search in array (function )

qsort

Sort elements of array (function )

Integer arithmetics

abs

Absolute value (function )

div

Integral division (function )

labs

Absolute value (function )

ldiv

Integral division (function )

llabs 

Absolute value (function )

lldiv 

Integral division (function )

Multibyte characters

mblen

Get length of multibyte character (function )

mbtowc

Convert multibyte sequence to wide character (function )

wctomb

Convert wide character to multibyte sequence (function )

Multibyte strings

mbstowcs

Convert multibyte string to wide-character string (function )

wcstombs

Convert wide-character string to multibyte string (function )

Macro constants

EXIT_FAILURE

Failure termination code (macro )

EXIT_SUCCESS

Success termination code (macro )

MB_CUR_MAX

Maximum size of multibyte characters (macro )

NULL

Null pointer (macro )

RAND_MAX

Maximum value returned by rand (macro )

Types

div_t

Structure returned by div (type )

ldiv_t

Structure returned by ldiv (type )

lldiv_t 

Structure returned by lldiv (type )

size_t

Unsigned integral type (type )

내용 출처 : http://www.cplusplus.com/reference/cstdlib/