DIGITTOINT(3)          FreeBSD Library Functions Manual          DIGITTOINT(3)

NAME
     digittoint - 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() 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)

FreeBSD 13.1-RELEASE-p6          April 6, 2001         FreeBSD 13.1-RELEASE-p6