bsd man page for atof

ATOF(3) 						     Library Functions Manual							   ATOF(3)

NAME
       atof, atoi, atol - convert ASCII to numbers

SYNOPSIS
       double atof(nptr)
       char *nptr;

       atoi(nptr)
       char *nptr;

       long atol(nptr)
       char *nptr;

DESCRIPTION
       These functions convert a string pointed to by nptr to floating, integer, and long integer representation respectively.	The first unrecog-
       nized character ends the string.

       Atof recognizes an optional string of spaces, then an optional sign, then a string of digits optionally containing a decimal point, then an
       optional `e' or `E' followed by an optionally signed integer.

       Atoi and atol recognize an optional string of spaces, then an optional sign, then a string of digits.

SEE ALSO
       scanf(3S)

BUGS
       There are no provisions for overflow.

7th Edition							   May 15, 1985 							   ATOF(3)