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DESCRIPTION
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DESCRIPTION
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<> is a macro which classifies ASCII integer values by table
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<> is a macro which classifies ASCII integer values by table
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lookup.  It is a predicate returning non-zero for printable
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lookup.  It is a predicate returning non-zero for printable
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characters, and 0 for other character arguments.
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characters, and 0 for other character arguments.
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It is defined only when <>(<[c]>) is true or <[c]> is EOF.
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It is defined only if <[c]> is representable as an unsigned char or if
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<[c]> is EOF.
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You can use a compiled subroutine instead of the macro definition by
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You can use a compiled subroutine instead of the macro definition by
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undefining either macro using `<<#undef isprint>>' or `<<#undef isgraph>>'.
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undefining either macro using `<<#undef isprint>>' or `<<#undef isgraph>>'.