/*
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/*
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FUNCTION
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FUNCTION
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<<toupper>>---translate characters to upper case
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<<toupper>>---translate characters to upper case
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INDEX
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INDEX
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toupper
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toupper
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INDEX
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INDEX
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_toupper
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_toupper
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ANSI_SYNOPSIS
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ANSI_SYNOPSIS
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#include <ctype.h>
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#include <ctype.h>
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int toupper(int <[c]>);
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int toupper(int <[c]>);
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int _toupper(int <[c]>);
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int _toupper(int <[c]>);
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TRAD_SYNOPSIS
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TRAD_SYNOPSIS
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#include <ctype.h>
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#include <ctype.h>
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int toupper(<[c]>);
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int toupper(<[c]>);
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int _toupper(<[c]>);
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int _toupper(<[c]>);
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DESCRIPTION
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DESCRIPTION
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<<toupper>> is a macro which converts lower-case characters to upper
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<<toupper>> is a macro which converts lower-case characters to upper
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case, leaving all other characters unchanged. It is only defined when
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case, leaving all other characters unchanged. It is only defined when
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<[c]> is an integer in the range <<EOF>> to <<255>>.
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<[c]> is an integer in the range <<EOF>> to <<255>>.
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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 this macro using `<<#undef toupper>>'.
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undefining this macro using `<<#undef toupper>>'.
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<<_toupper>> performs the same conversion as <<toupper>>, but should
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<<_toupper>> performs the same conversion as <<toupper>>, but should
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only be used when <[c]> is known to be a lowercase character (<<a>>--<<z>>).
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only be used when <[c]> is known to be a lowercase character (<<a>>--<<z>>).
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RETURNS
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RETURNS
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<<toupper>> returns the upper-case equivalent of <[c]> when it is a
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<<toupper>> returns the upper-case equivalent of <[c]> when it is a
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character between <<a>> and <<z>>, and <[c]> otherwise.
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character between <<a>> and <<z>>, and <[c]> otherwise.
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<<_toupper>> returns the upper-case equivalent of <[c]> when it is a
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<<_toupper>> returns the upper-case equivalent of <[c]> when it is a
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character between <<a>> and <<z>>. If <[c]> is not one of these
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character between <<a>> and <<z>>. If <[c]> is not one of these
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characters, the behaviour of <<_toupper>> is undefined.
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characters, the behaviour of <<_toupper>> is undefined.
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PORTABILITY
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PORTABILITY
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<<toupper>> is ANSI C. <<_toupper>> is not recommended for portable programs.
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<<toupper>> is ANSI C. <<_toupper>> is not recommended for portable programs.
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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 <ctype.h>
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#include <ctype.h>
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#undef toupper
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#undef toupper
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int
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int
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_DEFUN(toupper,(c),int c)
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_DEFUN(toupper,(c),int c)
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{
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{
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return islower(c) ? c - 'a' + 'A' : c;
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return islower(c) ? c - 'a' + 'A' : c;
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}
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}
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