NAME    [Toc]    [Back]

     atof -- convert ASCII string to double

LIBRARY    [Toc]    [Back]

     Standard C Library (libc, -lc)

SYNOPSIS    [Toc]    [Back]

     #include <stdlib.h>

     double
     atof(const char *nptr);

DESCRIPTION    [Toc]    [Back]

     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);

     The decimal point character is defined in the program's locale (category
     LC_NUMERIC).

IMPLEMENTATION NOTES    [Toc]    [Back]

     The atof() function is not thread-safe and also not async-cancel-safe.

     The atof() function has been deprecated by strtod() and should not be
     used in new code.

ERRORS    [Toc]    [Back]

     The function atof() need not affect the value of errno on an error.

SEE ALSO    [Toc]    [Back]

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

STANDARDS    [Toc]    [Back]

     The atof() function conforms to ISO/IEC 9945-1:1990 (``POSIX.1''),
     ISO/IEC 9899:1990 (``ISO C89''), and ISO/IEC 9899:1999 (``ISO C99'').


FreeBSD 5.2.1			 June 4, 1993			 FreeBSD 5.2.1