Basic character classification - 7-bit ASCII only

## Macros

#define | SVN_CTYPE_CNTRL 0x0001
| Control character.
#define | SVN_CTYPE_SPACE 0x0002
| Whitespace.
#define | SVN_CTYPE_DIGIT 0x0004
| Decimal digit.
#define | SVN_CTYPE_UPPER 0x0008
| Uppercase letter.
#define | SVN_CTYPE_LOWER 0x0010
| Lowercase letter.
#define | SVN_CTYPE_PUNCT 0x0020
| Punctuation mark.
#define | SVN_CTYPE_XALPHA 0x0040
| Hexadecimal digits A to F.
#define | SVN_CTYPE_ASCII 0x0080
| ASCII subset.
#define | SVN_CTYPE_ALPHA (SVN_CTYPE_LOWER | SVN_CTYPE_UPPER)
| ASCII letter.
#define | SVN_CTYPE_ALNUM (SVN_CTYPE_ALPHA | SVN_CTYPE_DIGIT)
| ASCII letter or decimal digit.
#define | SVN_CTYPE_XDIGIT (SVN_CTYPE_DIGIT | SVN_CTYPE_XALPHA)
| ASCII hexadecimal digit.
#define | SVN_CTYPE_GRAPH (SVN_CTYPE_PUNCT | SVN_CTYPE_ALNUM)
| Printable ASCII except space.
#define | SVN_CTYPE_PRINT (SVN_CTYPE_GRAPH | SVN_CTYPE_SPACE)
| All printable ASCII.
#define | svn_ctype_iscntrl(c) svn_ctype_test((c), SVN_CTYPE_CNTRL)
| Check if c is an ASCII control character.
#define | svn_ctype_isspace(c) svn_ctype_test((c), SVN_CTYPE_SPACE)
| Check if c is an ASCII whitespace character.
#define | svn_ctype_isdigit(c) svn_ctype_test((c), SVN_CTYPE_DIGIT)
| Check if c is an ASCII digit.
#define | svn_ctype_isupper(c) svn_ctype_test((c), SVN_CTYPE_UPPER)
| Check if c is an ASCII uppercase letter.
#define | svn_ctype_islower(c) svn_ctype_test((c), SVN_CTYPE_LOWER)
| Check if c is an ASCII lowercase letter.
#define | svn_ctype_ispunct(c) svn_ctype_test((c), SVN_CTYPE_PUNCT)
| Check if c is an ASCII punctuation mark.
#define | svn_ctype_isascii(c) svn_ctype_test((c), SVN_CTYPE_ASCII)
| Check if c is an ASCII character.
#define | svn_ctype_isalpha(c) svn_ctype_test((c), SVN_CTYPE_ALPHA)
| Check if c is an ASCII letter.
#define | svn_ctype_isalnum(c) svn_ctype_test((c), SVN_CTYPE_ALNUM)
| Check if c is an ASCII letter or decimal digit.
#define | svn_ctype_isxdigit(c) svn_ctype_test((c), SVN_CTYPE_XDIGIT)
| Check if c is an ASCII hexadecimal digit.
#define | svn_ctype_isgraph(c) svn_ctype_test((c), SVN_CTYPE_GRAPH)
| Check if c is an ASCII graphical (visible printable) character.
#define | svn_ctype_isprint(c) svn_ctype_test((c), SVN_CTYPE_PRINT)
| Check if c is an ASCII printable character.

## Detailed Description