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);
#include
<xlocale.h>
#include <ctype.h>
int
digittoint_l(int c,
locale_t loc);
DESCRIPTION
The
digittoint()
function converts 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.
While the
digittoint()
function uses the current locale, the
digittoint_l()
function may be passed a locale directly. See
xlocale(3) for more information.
RETURN VALUES
The digittoint() function always returns
an integer from the range of 0 to 15. If the given character was not a digit
as defined by isxdigit(3), the function will return 0.