php man page for atof

ATOF(3) 						     Linux Programmer's Manual							   ATOF(3)

NAME
       atof - convert a string to a 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.  The behavior is the same as

	   strtod(nptr, NULL);

       except that atof() does not detect errors.

RETURN VALUE
       The converted value.

ATTRIBUTES
       For an explanation of the terms used in this section, see attributes(7).

       +----------+---------------+----------------+
       |Interface | Attribute	  | Value	   |
       +----------+---------------+----------------+
       |atof()	  | Thread safety | MT-Safe locale |
       +----------+---------------+----------------+
CONFORMING TO
       POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD.

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

COLOPHON
       This  page is part of release 4.15 of the Linux man-pages project.  A description of the project, information about reporting bugs, and the
       latest version of this page, can be found at https://www.kernel.org/doc/man-pages/.

GNU
								    2016-12-12								   ATOF(3)