DIGITTOINT(3)

NAME
digittoint - convert a numeric character to its integer value

LIBRARY
libc

SYNOPSIS
#include <ctype.h>
int
digittoint(int c);
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.

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() 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.

SEE ALSO
ctype(3), isdigit(3), isxdigit(3,) xlocale(3)