compilers/linux86-0.16.17/libc/include/ctype.h

   1 /*
   2  *      ctype.h         Character classification and conversion
   3  */
   4
   5 #ifndef __CTYPE_H
   6 #define __CTYPE_H
   7
   8 extern  unsigned char   __ctype[];
   9
  10 #define __CT_d  0x01            /* numeric digit */
  11 #define __CT_u  0x02            /* upper case */
  12 #define __CT_l  0x04            /* lower case */
  13 #define __CT_c  0x08            /* control character */
  14 #define __CT_s  0x10            /* whitespace */
  15 #define __CT_p  0x20            /* punctuation */
  16 #define __CT_x  0x40            /* hexadecimal */
  17
  18 /* Define these as simple old style ascii versions */
  19 #define toupper(c)      (((c)>='a'&&(c)<='z') ? (c)^0x20 : (c))
  20 #define tolower(c)      (((c)>='A'&&(c)<='Z') ? (c)^0x20 : (c))
  21 #define _toupper(c)     ((c)^0x20)
  22 #define _tolower(c)     ((c)^0x20)
  23 #define toascii(c)      ((c)&0x7F)
  24
  25 #define __CT(c) (__ctype[1+(unsigned char)c])
  26
  27 /* Note the '!!' is a cast to 'bool' and even BCC deletes it in an if()  */
  28 #define isalnum(c)      (!!(__CT(c)&(__CT_u|__CT_l|__CT_d)))
  29 #define isalpha(c)      (!!(__CT(c)&(__CT_u|__CT_l)))
  30 #define isascii(c)      (!((c)&~0x7F))
  31 #define iscntrl(c)      (!!(__CT(c)&__CT_c))
  32 #define isdigit(c)      (!!(__CT(c)&__CT_d))
  33 #define isgraph(c)      (!(__CT(c)&(__CT_c|__CT_s)))
  34 #define islower(c)      (!!(__CT(c)&__CT_l))
  35 #define isprint(c)      (!(__CT(c)&__CT_c))
  36 #define ispunct(c)      (!!(__CT(c)&__CT_p))
  37 #define isspace(c)      (!!(__CT(c)&__CT_s))
  38 #define isupper(c)      (!!(__CT(c)&__CT_u))
  39 #define isxdigit(c)     (!!(__CT(c)&__CT_x))
  40
  41 #endif /* __CTYPE_H */