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

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)

FreeBSD 15.1-STABLE-HBSD       December 19, 2022                 DIGITTOINT(3)