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

NAME
     atof - convert ASCII string to double

SYNOPSIS
     #include <stdlib.h>

     double
     atof(const char *nptr)

DESCRIPTION
     The atof() function converts the initial portion of the string pointed to
     by nptr to double representation.

     It is equivalent to:

           strtod(nptr, (char **)NULL);

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

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

BUGS
     This manual page represents intent instead of actual practice.  While it
     is intended that atof() be implemented using strtod(3),  this has not yet
     happened.  In the current system, atof() translates a string in the
     following form to a double: a string of leading white space, possibly
     followed by a sign (``+'' or ``-''), followed by a digit string which may
     contain one decimal point (``.''), which may be followed by either of the
     exponent flags (``E'' or ``e''), and lastly, followed by a signed or
     unsigned integer.

BSD Experimental                 June 29, 1991                               1