atoll—convert a string to a long long integer #include <stdlib.h>
long long atoll(const char *str);
long long _atoll_r(struct _reent *ptr, const char *str);
Description
The function atoll converts the initial portion of the string
pointed to by *str to a type long long. A call to
atoll(str) in this implementation is equivalent to
strtoll(str, (char **)NULL, 10) including behavior on error.
The alternate function _atoll_r is a reentrant version. The
extra argument reent is a pointer to a reentrancy structure.
Returns
The converted value.
Portability
atoll is ISO 9899 (C99) and POSIX 1003.1-2001 compatable.
No supporting OS subroutines are required.