| /* |
| FUNCTION |
| <<isascii>>---ASCII character predicate |
| |
| INDEX |
| isascii |
| |
| ANSI_SYNOPSIS |
| #include <ctype.h> |
| int isascii(int <[c]>); |
| |
| TRAD_SYNOPSIS |
| #include <ctype.h> |
| int isascii(<[c]>); |
| |
| DESCRIPTION |
| <<isascii>> is a macro which returns non-zero when <[c]> is an ASCII |
| character, and 0 otherwise. It is defined for all integer values. |
| |
| You can use a compiled subroutine instead of the macro definition by |
| undefining the macro using `<<#undef isascii>>'. |
| |
| RETURNS |
| <<isascii>> returns non-zero if the low order byte of <[c]> is in the range |
| 0 to 127 (<<0x00>>--<<0x7F>>). |
| |
| PORTABILITY |
| <<isascii>> is ANSI C. |
| |
| No supporting OS subroutines are required. |
| */ |
| #include <_ansi.h> |
| #include <ctype.h> |
| |
| |
| |
| #undef isascii |
| |
| int |
| _DEFUN(isascii,(c),int c) |
| { |
| return c >= 0 && c< 128; |
| } |
