| cstdlib (stdlib.h) |
header |
C Standard General Utilities Library
This header defines several general purpose functions, including dynamic memory management, random number generation, communication with the environment, integer arthmetics, 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) |
| strtod | Convert string to double (function) |
| strtol | Convert string to long integer (function) |
| strtoul | Convert string to unsigned long integer (function) |
Pseudo-random sequence generation:
| rand | Generate random number (function) |
| srand | Initialize random number generator (functions) |
Dynamic memory management:
| calloc | Allocate space for array in memory (function) |
| free | Deallocate space in memory (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) |
| exit | Terminate calling process (function) |
| getenv | Get environment string (function) |
| system | Execute system command (function) |
Searching and sorting:
| bsearch | Binary search in array (function) |
| qsort | Sort elements of array (function) |
Integer arithmethics:
| abs | Absolute value (function) |
| div | Integral division (function) |
| labs | Absolute value (function) |
| ldiv | Integral division (function) |
Multibyte characters:
| mblen | Get length of multibyte character (function) |
| mbtowc | Convert multibyte character to wide character (function) |
| wctomb | Convert wide character to multibyte character (function) |
Multibyte strings:
| mbstowcs | Convert multibyte string to wide-character string (function) |
| wcstombs | Convert wide-character string to multibyte string (function) |
Macros
| 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 div and ldiv (type) |
| size_t | Unsigned integral type (type) |
