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/*
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*******************************************************************************
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*
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* Copyright (C) 1999-2004, International Business Machines
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* Corporation and others. All Rights Reserved.
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*
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*******************************************************************************
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* file name: uinvchar.h
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* encoding: US-ASCII
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* tab size: 8 (not used)
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* indentation:2
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*
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* created on: 2004sep14
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* created by: Markus W. Scherer
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*
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* Definitions for handling invariant characters, moved here from putil.c
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* for better modularization.
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*/
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#ifndef __UINVCHAR_H__
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#define __UINVCHAR_H__
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#include "unicode/utypes.h"
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/**
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* Check if a char string only contains invariant characters.
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* See utypes.h for details.
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*
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* @param s Input string pointer.
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* @param length Length of the string, can be -1 if NUL-terminated.
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* @return TRUE if s contains only invariant characters.
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*
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* @internal (ICU 2.8)
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*/
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U_INTERNAL UBool U_EXPORT2
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uprv_isInvariantString(const char *s, int32_t length);
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/**
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* Check if a Unicode string only contains invariant characters.
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* See utypes.h for details.
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*
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* @param s Input string pointer.
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* @param length Length of the string, can be -1 if NUL-terminated.
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* @return TRUE if s contains only invariant characters.
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*
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* @internal (ICU 2.8)
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*/
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U_INTERNAL UBool U_EXPORT2
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uprv_isInvariantUString(const UChar *s, int32_t length);
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/**
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* \def U_UPPER_ORDINAL
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* Get the ordinal number of an uppercase invariant character
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* @internal
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*/
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#if U_CHARSET_FAMILY==U_ASCII_FAMILY
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# define U_UPPER_ORDINAL(x) ((x)-'A')
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#elif U_CHARSET_FAMILY==U_EBCDIC_FAMILY
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# define U_UPPER_ORDINAL(x) (((x) < 'J') ? ((x)-'A') : \
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(((x) < 'S') ? ((x)-'J'+9) : \
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((x)-'S'+18)))
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#else
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# error Unknown charset family!
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#endif
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#endif
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