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/*
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/*
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FUNCTION
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FUNCTION
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<>---lowercase character predicate
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<>---lowercase character predicate
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INDEX
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INDEX
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islower
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islower
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ANSI_SYNOPSIS
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ANSI_SYNOPSIS
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#include
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#include
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int islower(int <[c]>);
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int islower(int <[c]>);
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TRAD_SYNOPSIS
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TRAD_SYNOPSIS
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#include
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#include
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int islower(<[c]>);
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int islower(<[c]>);
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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 minuscules
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lookup.  It is a predicate returning non-zero for minuscules
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(lowercase alphabetic characters), and 0 for other characters.
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(lowercase alphabetic characters), and 0 for other characters.
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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 the macro using `<<#undef islower>>'.
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undefining the macro using `<<#undef islower>>'.
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RETURNS
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RETURNS
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<> returns non-zero if <[c]> is a lowercase letter (<>--<>).
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<> returns non-zero if <[c]> is a lowercase letter (<>--<>).
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PORTABILITY
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PORTABILITY
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<> is ANSI C.
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<> is ANSI C.
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No supporting OS subroutines are required.
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No supporting OS subroutines are required.
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*/
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*/
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#include <_ansi.h>
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#include <_ansi.h>
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#include
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#include
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#undef islower
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#undef islower
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int
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int
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_DEFUN(islower,(c),int c)
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_DEFUN(islower,(c),int c)
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{
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{
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	return ((__ctype_ptr__[c+1] & (_U|_L)) == _L);
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	return ((__ctype_ptr__[c+1] & (_U|_L)) == _L);
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}
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}