.\" Copyright (c) 1990 The Regents of the University of California.
.\" %sccs.include.redist.man%
.\" @(#)atof.3 6.2 (Berkeley) %G%
atof \- convert ASCII string to double
function converts the initial portion of the string pointed to by
strtod(nptr, (char **)NULL);
atoi(3), atol(3), strtod(3), strtol(3), strtoul(3)
conforms to ANSI X3.159-1989 (``ANSI C'').
This manual page represents intent instead of actual practice.
While it is intended that
this has not yet happened.
translates a string in the following form to a double:
an optional string of spaces, followed by an optional sign (``+'' or ``-''),
followed by a string of digits which may contain a decimal point (``.''),
followed by an optional exponent flag (``E'' or ``e''), followed by an
optionally signed integer.