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# CTYPE.H -- Character type definitions.
define IS_UPPER ($1>='A'&&$1<='Z')
define IS_LOWER ($1>='a'&&$1<='z')
define IS_DIGIT ($1>='0'&&$1<='9')
define IS_PRINT ($1>=' '&&$1<177B)
define IS_CNTRL ($1>0&&$1<' ')
define IS_ASCII ($1>0&&$1<=177B)
define IS_ALPHA (IS_UPPER($1)||IS_LOWER($1))
define IS_ALNUM (IS_ALPHA($1)||IS_DIGIT($1))
define IS_WHITE ($1==' '||$1=='\t')
define TO_UPPER ($1+'A'-'a')
define TO_LOWER ($1+'a'-'A')
define TO_INTEG ($1-'0')
define TO_DIGIT ($1+'0')
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