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 dou‐
       ble.  The behavior is the same as

           strtod(nptr, NULL);

       except that atof() does not detect errors.

RETURN VALUE
       The converted value.

ATTRIBUTES
   Multithreading (see pthreads(7))
       The atof() function is thread-safe with exceptions.  It  can  be  safely  used  in  multi‐
       threaded  applications,  as long as setlocale(3) is not called to change the locale during
       its execution.

CONFORMING TO
       SVr4, POSIX.1-2001, 4.3BSD, C89, C99.

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

COLOPHON
       This page is part of release 3.74 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 http://www.kernel.org/doc/man-pages/.



GNU                                         2014-01-22                                    ATOF(3)