NAME

atol - convert a string to long integer

 SYNOPSIS

#include <stdlib.h>

long int atol(const char *str);

 DESCRIPTION

The call atol(str) is equivalent to:

strtol(str, (char **)NULL, 10)

except that the handling of errors may differ. If the value cannot be represented, the behaviour is undefined.

 RETURN VALUE

The atol() function returns the converted value if the value can be represented.

 ERRORS

No errors are defined.

 EXAMPLES

None.

 APPLICATION USAGE

The atol() function is subsumed by strtol() but is retained because it is used extensively in existing code. If the number is not known to be in range, strtol() should be used because atol() is not required to perform any error checking.

 FUTURE DIRECTIONS

None.

 SEE ALSO

strtol(), <stdlib.h>.

DERIVATION

Derived from Issue 1 of the SVID.