STRTOL(3)                 386BSD Programmer's Manual                 STRTOL(3)

NAME
     strtol - convert string value to a long integer

SYNOPSIS
     #include <stdlib.h>
     #include <limits.h>

     long
     strtol(char *nptr, char **endptr, int base)

DESCRIPTION
     The strtol() function converts the string in nptr to a long value
     according to the given base, which must be between 2 and 36 inclusive, or
     be the special value 0.

     The string may begin with an arbitrary amount of white space (as
     determined by isspace(3))  followed by a single optional `+' or `-' sign.
     If base is zero or 16, the string may then include a `0x' prefix, and the
     number will be read in base 16; otherwise, a zero base is taken as 10
     (decimal) unless the next character is `0', in which case it is taken as
     8 (octal).

     The remainder of the string is converted to a long value in the obvious
     manner, stopping at the first character which is not a valid digit in the
     given base.  (In bases above 10, the letter `A' in either upper or lower
     case represents 10, `B' represents 11, and so forth, with `Z'
     representing 35.)

     If endptr is non nil, strtol() stores the address of the first invalid
     character in *endptr. If there were no digits at all, however, strtol()
     stores the original value of nptr in *endptr. (Thus, if *nptr is not `\0'
     but **endptr is `\0' on return, the entire string was valid.)

RETURN VALUES
     The strtol() function returns the result of the conversion, unless the
     value would underflow or overflow.  If an underflow occurs, strtol()
     returns LONG_MIN. If an overflow occurs, strtol() returns LONG_MAX. In
     both cases, errno is set to ERANGE.

ERRORS
     [ERANGE]  The given string was out of range; the value converted has been
               clamped.

SEE ALSO
     atof(3),  atoi(3),  atol(3),  strtod(3),  strtoul(3)

STANDARDS
     The strtol() function conforms to ANSI C3.159-1989 (``ANSI C'').

BUGS
     Ignores the current locale.

BSD Experimental                 June 29, 1991                               1