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
STANDARDS
The atof() function conforms to
ANSI X3.159-1989
(“ANSI C89”).
HISTORY
An atof() function first appeared in
Version 1 AT&T UNIX.
CAVEATS
On systems other than OpenBSD, the
LC_NUMERIC
locale(1) category can cause parsing failures; see CAVEATS in
setlocale(3) for details.