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diff --git a/thirdparty/icu4c/common/ucurrimp.h b/thirdparty/icu4c/common/ucurrimp.h
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+++ b/thirdparty/icu4c/common/ucurrimp.h
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+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+/*
+**********************************************************************
+* Copyright (c) 2002-2016, International Business Machines
+* Corporation and others.  All Rights Reserved.
+**********************************************************************
+*/
+
+#ifndef _UCURR_IMP_H_
+#define _UCURR_IMP_H_
+
+#include "unicode/utypes.h"
+#include "unicode/unistr.h"
+#include "unicode/parsepos.h"
+#include "unicode/uniset.h"
+
+/**
+ * Internal method.  Given a currency ISO code and a locale, return
+ * the "static" currency name.  This is usually the same as the
+ * UCURR_SYMBOL_NAME, but if the latter is a choice format, then the
+ * format is applied to the number 2.0 (to yield the more common
+ * plural) to return a static name.
+ *
+ * This is used for backward compatibility with old currency logic in
+ * DecimalFormat and DecimalFormatSymbols.
+ */
+U_CAPI void
+uprv_getStaticCurrencyName(const UChar* iso, const char* loc,
+                           icu::UnicodeString& result, UErrorCode& ec);
+
+/**
+ * Attempt to parse the given string as a currency, either as a
+ * display name in the given locale, or as a 3-letter ISO 4217
+ * code.  If multiple display names match, then the longest one is
+ * selected.  If both a display name and a 3-letter ISO code
+ * match, then the display name is preferred, unless it's length
+ * is less than 3.
+ *
+ * The parameters must not be NULL.
+ *
+ * @param locale the locale of the display names to match
+ * @param text the text to parse
+ * @param pos input-output position; on input, the position within
+ * text to match; must have 0 <= pos.getIndex() < text.length();
+ * on output, the position after the last matched character. If
+ * the parse fails, the position in unchanged upon output.
+ * @param type currency type to parse against, LONG_NAME only or not
+ * @param partialMatchLen The length of the longest matching prefix;
+ * this may be nonzero even if no full currency was matched.
+ * @return the ISO 4217 code, as a string, of the best match, or
+ * null if there is no match
+ *
+ * @internal
+ */
+U_CAPI void
+uprv_parseCurrency(const char* locale,
+                   const icu::UnicodeString& text,
+                   icu::ParsePosition& pos,
+                   int8_t type,
+                   int32_t* partialMatchLen,
+                   UChar* result,
+                   UErrorCode& ec);
+
+/**
+ * Puts all possible first-characters of a currency into the
+ * specified UnicodeSet.
+ *
+ * @param locale the locale of the display names of interest
+ * @param result the UnicodeSet to which to add the starting characters
+ */
+void uprv_currencyLeads(const char* locale, icu::UnicodeSet& result, UErrorCode& ec);
+
+
+
+#endif /* #ifndef _UCURR_IMP_H_ */
+
+//eof