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14 | int isdigit(<[c]>); |
14 | int isdigit(<[c]>); |
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15 | 15 | ||
16 | DESCRIPTION |
16 | DESCRIPTION |
17 | < |
17 | < |
18 | lookup. It is a predicate returning non-zero for decimal digits, and 0 for |
18 | lookup. It is a predicate returning non-zero for decimal digits, and 0 for |
19 | other characters. It is defined only when < |
19 | other characters. It is defined only if <[c]> is representable as an |
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20 | or <[c]> is EOF. |
20 | unsigned char or if <[c]> is EOF. |
21 | 21 | ||
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22 | You can use a compiled subroutine instead of the macro definition by |
22 | You can use a compiled subroutine instead of the macro definition by |