atof man page on 4.4BSD

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ATOF(3)			 BSD Library Functions 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 X3.159-1989 (“ANSI C89”).

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 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
     unsigned integer.

BSD				 June 4, 1993				   BSD
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