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strtol(3C)							    strtol(3C)

NAME
       strtol(),  atol(),  atoll(), atoi(), strtoul(), strtoll(), strtoull() -
       convert string to integer

SYNOPSIS
DESCRIPTION
       or converts the character string pointed to by str  to  or  representa‐
       tion, respectively.  or converts the character string pointed to by str
       to or representation, respectively.  The string is scanned  up  to  the
       first  character	 inconsistent  with  the  base.	 Leading "white-space"
       characters (as defined by in ctype(3C)) are ignored.  If no  conversion
       can take place, zero is returned.

       If  base is greater than or equal to 2 and less than or equal to 36, it
       is used as the base for conversion.  After an  optional	leading	 sign,
       leading zeros are ignored, and or is ignored if base is 16.

       If  base	 is  zero,  the	 string itself determines the base as follows:
       after an optional leading sign, a leading zero indicates octal  conver‐
       sion;  a leading or indicates hexadecimal conversion.  Otherwise, deci‐
       mal conversion is used.

       If the value of ptr is not a pointer to the character  terminating  the
       scan  is returned in the location pointed to by ptr.  If no integer can
       be formed, the location pointed to by ptr is set to str,	 and  zero  is
       returned.

       is equivalent to

       is equivalent to

       is equivalent to

RETURN VALUE
       Upon  successful	 completion, all functions return the converted value,
       if any.

       If the correct value would cause overflow:

       returns	      or (according to the sign of the value), and sets to

       returns	      and sets to

       returns	      or (according to the sign of the value), and sets to

       returns	      and sets to

       returns	      or (according to the sign of the value), and sets to

       For all other errors, zero is returned  and  is	set  to	 indicate  the
       error.

ERRORS
       and  fail  and  is  set, if any of the following conditions are encoun‐
       tered:

	      The value of   base is not supported.

	      The value to be returned would have caused overflow.

AUTHOR
       These interfaces were developed by OSF and HP.

SEE ALSO
       ctype(3C),  strtod(3C),	strtoimax(3C),	scanf(3S),   thread_safety(5),
       glossary(9).

STANDARDS CONFORMANCE
								    strtol(3C)
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