chrutil.h

/* File: chrutil.h */

/*   This file contains various  macros and prototypes for character processing */

#define   ERROR     -2

#define   IS_DIGIT(c)   ((c) >= '0' && (c) <= '9')

#define   IS_LOWER(c)   ((c) >= 'a' && (c) <= 'z')

#define   IS_UPPER(c)   ((c) >= 'A' && (c) <= 'Z')

#define   IS_WHITE_SPACE(c)   ((c) == ' ' || (c) == '\t' || (c) == '\n')

#define   IS_PRINT(c)   ((c) >= 32 && (c) < 127)

#define  LOWER     0

#define  UPPER     1

#define  DIGIT     2

#define  PUNCT     3

#define  SPACE     4

#define  CONTROL   5

#define  SPECIAL   6

int dig_to_int(char ch);

char int_to_dig(int n);

char uppercase(char ch);

int getint();

int delimitp(char c);

int whitep(char c);

int punctp(char c);

int vowelp(char c);

int letterp(char c);

int illegal(char c);      /* Tests if c is legal. */