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 4.12 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/.


  Copyright 1993 David Metcalfe (davidprism.demon.co.uk)

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References consulted:
    Linux libc source code
    Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991)
    386BSD man pages
Modified Mon Mar 29 22:39:24 1993, David Metcalfe
Modified Sat Jul 24 21:39:22 1993, Rik Faith (faithcs.unc.edu)