Last change
on this file since 559 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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Line | |
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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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