NAME
digittoint
,
digittoint_l
—
convert a numeric character to its
integer value
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include
<ctype.h>
int
digittoint
(int
c);
int
digittoint_l
(int
c, locale_t
loc);
DESCRIPTION
The
digittoint
()
and digittoint_l
() functions convert a numeric
character to its corresponding integer value. The character can be any
decimal digit or hexadecimal digit. With hexadecimal characters, the case of
the values does not matter.
The
digittoint_l
()
function takes an explicit locale argument, whereas the
digittoint
() function use the current global or
per-thread locale.
RETURN VALUES
The digittoint
() and
digittoint_l
() functions always return an integer
from the range of 0 to 15. If the given character was not a digit as defined
by
isxdigit(3) or
isxdigit_l(3), the function will return 0.
SEE ALSO
ctype(3), ctype_l(3), isdigit(3), isdigit_l(3), isxdigit(3), isxdigit_l(3), xlocale(3)