# digittoint(3) [freebsd man page]

```DIGITTOINT(3)						   BSD 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 hexa-
decimal 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.

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

BSD								   April 6, 2001							       BSD```

## Check Out this Related Man Page

```CTYPE_L(3)						   BSD Library Functions Manual 						CTYPE_L(3)

NAME
digittoint_l, isalnum_l, isalpha_l, isascii_l, isblank_l, iscntrl_l, isdigit_l, isgraph_l, ishexnumber_l, isideogram_l, islower_l,
isnumber_l, isphonogram_l, isprint_l, ispunct_l, isrune_l, isspace_l, isspecial_l, isupper_l, isxdigit_l, tolower_l, toupper_l -- character
classification functions

LIBRARY
Standard C Library (libc, -lc)

SYNOPSIS
#include <ctype.h>

int
digittoint_l(int c, locale_t loc);

int
isalnum_l(int c, locale_t loc);

int
isalpha_l(int c, locale_t loc);

int
isascii_l(int c, locale_t loc);

int
iscntrl_l(int c, locale_t loc);

int
isdigit_l(int c, locale_t loc);

int
isgraph_l(int c, locale_t loc);

int
ishexnumber_l(int c, locale_t loc);

int
isideogram_l(int c, locale_t loc);

int
islower_l(int c, locale_t loc);

int
isnumber_l(int c, locale_t loc);

int
isphonogram_l(int c, locale_t loc);

int
isspecial_l(int c, locale_t loc);

int
isprint_l(int c, locale_t loc);

int
ispunct_l(int c, locale_t loc);

int
isrune_l(int c, locale_t loc);

int
isspace_l(int c, locale_t loc);

int
isupper_l(int c, locale_t loc);

int
isxdigit_l(int c, locale_t loc);

int
tolower_l(int c, locale_t loc);

int
toupper_l(int c, locale_t loc);

DESCRIPTION
The above functions perform character tests and conversions on the integer c in the locale loc.  They behave in the same way as the versions
without the _l suffix, but use the specified locale rather than the global or per-thread locale.  <ctype.h>, or as true functions in the C
library.  See the specific manual pages for more information.

digittoint(3), isalnum(3), isalpha(3), isascii(3), isblank(3), iscntrl(3), isdigit(3), isgraph(3), isideogram(3), islower(3), isphonogram(3),
isprint(3), ispunct(3), isrune(3), isspace(3), isspecial(3), isupper(3), isxdigit(3), tolower(3), toupper(3), wctype(3), xlocale(3)

STANDARDS
These functions conform to IEEE Std 1003.1-2008 (``POSIX.1''), except for digittoint_l(), isascii_l(), ishexnumber_l(), isideogram_l(),
isnumber_l(), isphonogram_l(), isrune_l() and isspecial_l() which are FreeBSD extensions.

BSD								   March 6, 2012							       BSD```
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