ICU-64260.0.1.tar.gz

[apple/icu.git] / icuSources / i18n / gregoimp.h

diff --git a/icuSources/i18n/gregoimp.h b/icuSources/i18n/gregoimp.h
index f65d1410139dfb0ac318b4d88e9ff0847ed3d684..06eb32384511e48924b0b41acd00aeacd1ef213b 100644 (file)
--- a/icuSources/i18n/gregoimp.h
+++ b/icuSources/i18n/gregoimp.h
@@ -1,3 +1,5 @@
+// © 2016 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
 /*
  **********************************************************************
  * Copyright (c) 2003-2008, International Business Machines
@@ -38,6 +40,17 @@ class ClockMath {
      */
     static int32_t floorDivide(int32_t numerator, int32_t denominator);
 
+    /**
+     * Divide two integers, returning the floor of the quotient.
+     * Unlike the built-in division, this is mathematically
+     * well-behaved.  E.g., <code>-1/4</code> => 0 but
+     * <code>floorDivide(-1,4)</code> => -1.
+     * @param numerator the numerator
+     * @param denominator a divisor which must be != 0
+     * @return the floor of the quotient
+     */
+    static int64_t floorDivide(int64_t numerator, int64_t denominator);
+
     /**
      * Divide two numbers, returning the floor of the quotient.
      * Unlike the built-in division, this is mathematically
@@ -286,76 +299,11 @@ inline int32_t Grego::millisToJulianDay(double millis) {
 }
 
 inline int32_t Grego::gregorianShift(int32_t eyear) {
-  int32_t y = eyear-1;
-  int32_t gregShift = ClockMath::floorDivide(y, 400) - ClockMath::floorDivide(y, 100) + 2;
+  int64_t y = (int64_t)eyear-1;
+  int32_t gregShift = static_cast<int32_t>(ClockMath::floorDivide(y, (int64_t)400) - ClockMath::floorDivide(y, (int64_t)100) + 2);
   return gregShift;
 }
 
-/**
- * This utility class provides convenient access to the data needed for a calendar. 
- * @internal ICU 3.0
- */
-class CalendarData : public UMemory {
-public: 
-    /**
-     * Construct a CalendarData from the given locale.
-     * @param loc locale to use. The 'calendar' keyword will be ignored.
-     * @param type calendar type. NULL indicates the gregorian calendar. 
-     * No default lookup is done.
-     * @param status error code
-     */
-    CalendarData(const Locale& loc, const char *type, UErrorCode& status);
-
-    /**
-     * Load data for calendar. Note, this object owns the resources, do NOT call ures_close()!
-     * The ResourceBundle C++ API should NOT be used because it is too slow for a low level API.
-     *
-     * @param key Resource key to data
-     * @param status Error Status
-     * @internal
-     */
-    UResourceBundle* getByKey(const char *key, UErrorCode& status);
-
-    /**
-     * Load data for calendar. Note, this object owns the resources, do NOT call ures_close()!
-     * There is an implicit key of 'format'
-     * data is located in:   "calendar/key/format/subKey"
-     * for example,  calendar/dayNames/format/abbreviated
-     * The ResourceBundle C++ API should NOT be used because it is too slow for a low level API.
-     *
-     * @param key Resource key to data
-     * @param subKey Resource key to data
-     * @param status Error Status
-     * @internal
-     */
-    UResourceBundle* getByKey2(const char *key, const char *subKey, UErrorCode& status);
-
-    /**
-     * Load data for calendar. Note, this object owns the resources, do NOT call ures_close()!
-     * data is located in:   "calendar/key/contextKey/subKey"
-     * for example,  calendar/dayNames/standalone/narrow
-     * The ResourceBundle C++ API should NOT be used because it is too slow for a low level API.
-     *
-     * @param key Resource key to data
-     * @param contextKey Resource key to data
-     * @param subKey Resource key to data
-     * @param status Error Status
-     * @internal
-     */
-    UResourceBundle* getByKey3(const char *key, const char *contextKey, const char *subKey, UErrorCode& status);
-
-    ~CalendarData();
-
-private:
-    void initData(const char *locale, const char *type, UErrorCode& status);
-
-    UResourceBundle *fFillin;
-    UResourceBundle *fOtherFillin;
-    UResourceBundle *fBundle;
-    UResourceBundle *fFallback;
-    CalendarData(); // Not implemented.
-};
-
 U_NAMESPACE_END
 
 #endif // !UCONFIG_NO_FORMATTING