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Last change
on this file since 444 was
444,
checked in by satin@…, 6 years ago
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add newlib,libalmos-mkh, restructure shared_syscalls.h and mini-libc
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File size:
1.1 KB
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| Rev | Line | |
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| [444] | 1 | /* |
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| 2 | FUNCTION |
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| 3 | <<isascii>>, <<isascii_l>>---ASCII character predicate |
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| 4 | |
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| 5 | INDEX |
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| 6 | isascii |
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| 7 | |
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| 8 | INDEX |
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| 9 | isascii_l |
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| 10 | |
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| 11 | SYNOPSIS |
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| 12 | #include <ctype.h> |
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| 13 | int isascii(int <[c]>); |
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| 14 | |
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| 15 | #include <ctype.h> |
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| 16 | int isascii_l(int <[c]>, locale_t <[locale]>); |
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| 17 | |
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| 18 | DESCRIPTION |
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| 19 | <<isascii>> is a macro which returns non-zero when <[c]> is an ASCII |
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| 20 | character, and 0 otherwise. It is defined for all integer values. |
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| 21 | |
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| 22 | <<isascii_l>> is like <<isascii>> but performs the check based on the |
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| 23 | locale specified by the locale object locale. If <[locale]> is |
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| 24 | LC_GLOBAL_LOCALE or not a valid locale object, the behaviour is undefined. |
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| 25 | |
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| 26 | You can use a compiled subroutine instead of the macro definition by |
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| 27 | undefining the macro using `<<#undef isascii>>' or `<<#undef isascii_l>>'. |
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| 28 | |
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| 29 | RETURNS |
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| 30 | <<isascii>>, <<isascii_l>> return non-zero if the low order byte of <[c]> |
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| 31 | is in the range 0 to 127 (<<0x00>>--<<0x7F>>). |
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| 32 | |
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| 33 | PORTABILITY |
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| 34 | <<isascii>> is ANSI C. |
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| 35 | <<isascii_l>> is a GNU extension. |
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| 36 | |
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| 37 | No supporting OS subroutines are required. |
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| 38 | */ |
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| 39 | #include <_ansi.h> |
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| 40 | #include <ctype.h> |
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| 41 | |
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| 42 | |
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| 43 | |
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| 44 | #undef isascii |
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| 45 | |
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| 46 | int |
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| 47 | isascii (int c) |
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| 48 | { |
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| 49 | return c >= 0 && c< 128; |
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| 50 | } |
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