ATOF(3) BSD Library Functions Manual ATOF(3)NAMEatof — convert ASCII string to double
atof(const char *nptr);
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 ALSOatoi(3), atol(3), strtod(3), strtol(3), strtoul(3)STANDARDS
The atof() function conforms to ANSI X3.159-1989 (“ANSI C89”).
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 fol‐
lowing form to a double: a string of leading white space, possibly fol‐
lowed 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
BSD June 4, 1993 BSD