ATOF(3C)            UNIX Programmer's Manual             ATOF(3C)

NAME
     atof, atoi, atol - convert ASCII to numbers

SYNOPSIS
     double atof (nptr)
     char *nptr;

     int atoi (nptr)
     char *nptr;

     long atol (nptr)
     char *nptr;

HP-UX COMPATIBILITY
     Level:    HP-UX/RUN ONLY

     Origin:   System III

DESCRIPTION
     These functions convert a  string  pointed  to  by  _n_p_t_r  to
     floating,  integer,  and long integer representation respec-
     tively.  The first unrecognized character ends the string.

     _A_t_o_f recognizes an optional string of tabs and spaces,  then
     an  optional  sign,  then a string of digits optionally con-
     taining a decimal point, then an optional e or E followed by
     an optionally signed integer.

     _A_t_o_i and _a_t_o_l recognize  an  optional  string  of  tabs  and
     spaces, then an optional sign, then a string of digits.

HARDWARE DEPENDENCIES
     Series 200/500:
          _A_t_o_i and _a_t_o_l are identical.

SEE ALSO
     scanf(3S).

BUGS
     There are no provisions for overflow.