/**
* \file
- * \brief C++ API: Abstract base class for all number formats.
+ * \brief C++ API: Compatibility APIs for number formatting.
*/
#if !UCONFIG_NO_FORMATTING
#endif
/**
+ * <p><strong>IMPORTANT:</strong> New users are strongly encouraged to see if
+ * numberformatter.h fits their use case. Although not deprecated, this header
+ * is provided for backwards compatibility only.
*
* Abstract base class for all number formats. Provides interface for
* formatting and parsing a number. Also provides methods for
* determining which locales have number formats, and what their names
* are.
+ *
* \headerfile unicode/numfmt.h "unicode/numfmt.h"
* <P>
* NumberFormat helps you to format and parse numbers for any locale.
*/
class U_I18N_API NumberFormat : public Format {
public:
+ /**
+ * Rounding mode.
+ *
+ * <p>
+ * For more detail on rounding modes, see:
+ * http://userguide.icu-project.org/formatparse/numbers/rounding-modes
+ *
+ * @stable ICU 2.4
+ */
+ enum ERoundingMode {
+ kRoundCeiling, /**< Round towards positive infinity */
+ kRoundFloor, /**< Round towards negative infinity */
+ kRoundDown, /**< Round towards zero */
+ kRoundUp, /**< Round away from zero */
+ kRoundHalfEven, /**< Round towards the nearest integer, or
+ towards the nearest even integer if equidistant */
+ kRoundHalfDown, /**< Round towards the nearest integer, or
+ towards zero if equidistant */
+ kRoundHalfUp, /**< Round towards the nearest integer, or
+ away from zero if equidistant */
+ /**
+ * Return U_FORMAT_INEXACT_ERROR if number does not format exactly.
+ * @stable ICU 4.8
+ */
+ kRoundUnnecessary
+ };
+
/**
* Alignment Field constants used to construct a FieldPosition object.
* Signifies that the position of the integer part or fraction part of
kPermillField = UNUM_PERMILL_FIELD,
/** @stable ICU 2.0 */
kSignField = UNUM_SIGN_FIELD,
+#ifndef U_HIDE_DRAFT_API
+ /** @draft ICU 64 */
+ kMeasureUnitField = UNUM_MEASURE_UNIT_FIELD,
+ /** @draft ICU 64 */
+ kCompactField = UNUM_COMPACT_FIELD,
+#endif // U_HIDE_DRAFT_API
/**
* These constants are provided for backwards compatibility only.
UnicodeString& appendTo,
FieldPositionIterator* posIter,
UErrorCode& status) const;
-public:
+
+// Can't use #ifndef U_HIDE_INTERNAL_API because these are virtual methods
+
/**
* Format a decimal number.
- * The number is a DigitList wrapper onto a floating point decimal number.
+ * The number is a DecimalQuantity wrapper onto a floating point decimal number.
* The default implementation in NumberFormat converts the decimal number
* to a double and formats that. Subclasses of NumberFormat that want
* to specifically handle big decimal numbers must override this method.
* class DecimalFormat does so.
*
- * @param number The number, a DigitList format Decimal Floating Point.
+ * @param number The number, a DecimalQuantity format Decimal Floating Point.
* @param appendTo Output parameter to receive result.
* Result is appended to existing contents.
* @param posIter On return, can be used to iterate over positions
* @return Reference to 'appendTo' parameter.
* @internal
*/
- virtual UnicodeString& format(const DigitList &number,
+ virtual UnicodeString& format(const number::impl::DecimalQuantity &number,
UnicodeString& appendTo,
FieldPositionIterator* posIter,
UErrorCode& status) const;
/**
* Format a decimal number.
- * The number is a DigitList wrapper onto a floating point decimal number.
+ * The number is a DecimalQuantity wrapper onto a floating point decimal number.
* The default implementation in NumberFormat converts the decimal number
* to a double and formats that. Subclasses of NumberFormat that want
* to specifically handle big decimal numbers must override this method.
* class DecimalFormat does so.
*
- * @param number The number, a DigitList format Decimal Floating Point.
+ * @param number The number, a DecimalQuantity format Decimal Floating Point.
* @param appendTo Output parameter to receive result.
* Result is appended to existing contents.
* @param pos On input: an alignment field, if desired.
* @return Reference to 'appendTo' parameter.
* @internal
*/
- virtual UnicodeString& format(const DigitList &number,
+ virtual UnicodeString& format(const number::impl::DecimalQuantity &number,
UnicodeString& appendTo,
FieldPosition& pos,
UErrorCode& status) const;
-public:
-
/**
* Return a long if possible (e.g. within range LONG_MAX,
* LONG_MAX], and with no decimals), otherwise a double. If
/**
* Create a default style NumberFormat for the current default locale.
* The default formatting style is locale dependent.
+ * <p>
+ * <strong>NOTE:</strong> New users are strongly encouraged to use
+ * {@link icu::number::NumberFormatter} instead of NumberFormat.
* @stable ICU 2.0
*/
static NumberFormat* U_EXPORT2 createInstance(UErrorCode&);
* Create a default style NumberFormat for the specified locale.
* The default formatting style is locale dependent.
* @param inLocale the given locale.
+ * <p>
+ * <strong>NOTE:</strong> New users are strongly encouraged to use
+ * {@link icu::number::NumberFormatter} instead of NumberFormat.
* @stable ICU 2.0
*/
static NumberFormat* U_EXPORT2 createInstance(const Locale& inLocale,
/**
* Create a specific style NumberFormat for the specified locale.
+ * <p>
+ * <strong>NOTE:</strong> New users are strongly encouraged to use
+ * {@link icu::number::NumberFormatter} instead of NumberFormat.
* @param desiredLocale the given locale.
* @param style the given style.
* @param errorCode Output param filled with success/failure status.
/**
* Returns a currency format for the current default locale.
+ * <p>
+ * <strong>NOTE:</strong> New users are strongly encouraged to use
+ * {@link icu::number::NumberFormatter} instead of NumberFormat.
* @stable ICU 2.0
*/
static NumberFormat* U_EXPORT2 createCurrencyInstance(UErrorCode&);
/**
* Returns a currency format for the specified locale.
+ * <p>
+ * <strong>NOTE:</strong> New users are strongly encouraged to use
+ * {@link icu::number::NumberFormatter} instead of NumberFormat.
* @param inLocale the given locale.
* @stable ICU 2.0
*/
/**
* Returns a percentage format for the current default locale.
+ * <p>
+ * <strong>NOTE:</strong> New users are strongly encouraged to use
+ * {@link icu::number::NumberFormatter} instead of NumberFormat.
* @stable ICU 2.0
*/
static NumberFormat* U_EXPORT2 createPercentInstance(UErrorCode&);
/**
* Returns a percentage format for the specified locale.
+ * <p>
+ * <strong>NOTE:</strong> New users are strongly encouraged to use
+ * {@link icu::number::NumberFormatter} instead of NumberFormat.
* @param inLocale the given locale.
* @stable ICU 2.0
*/
/**
* Returns a scientific format for the current default locale.
+ * <p>
+ * <strong>NOTE:</strong> New users are strongly encouraged to use
+ * {@link icu::number::NumberFormatter} instead of NumberFormat.
* @stable ICU 2.0
*/
static NumberFormat* U_EXPORT2 createScientificInstance(UErrorCode&);
/**
* Returns a scientific format for the specified locale.
+ * <p>
+ * <strong>NOTE:</strong> New users are strongly encouraged to use
+ * {@link icu::number::NumberFormatter} instead of NumberFormat.
* @param inLocale the given locale.
* @stable ICU 2.0
*/
* Returns true if grouping is used in this format. For example,
* in the English locale, with grouping on, the number 1234567
* might be formatted as "1,234,567". The grouping separator as
- * well as the size of each group is locale dependant and is
+ * well as the size of each group is locale dependent and is
* determined by sub-classes of NumberFormat.
* @see setGroupingUsed
* @stable ICU 2.0
* @stable ICU 2.6
*/
const char16_t* getCurrency() const;
-
+
/**
* Set a particular UDisplayContext value in the formatter, such as
* UDISPCTX_CAPITALIZATION_FOR_STANDALONE.
*/
virtual UDisplayContext getContext(UDisplayContextType type, UErrorCode& status) const;
+ /**
+ * Get the rounding mode. This will always return NumberFormat::ERoundingMode::kRoundUnnecessary
+ * if the subclass does not support rounding.
+ * @return A rounding mode
+ * @stable ICU 60
+ */
+ virtual ERoundingMode getRoundingMode(void) const;
+
+ /**
+ * Set the rounding mode. If a subclass does not support rounding, this will do nothing.
+ * @param roundingMode A rounding mode
+ * @stable ICU 60
+ */
+ virtual void setRoundingMode(ERoundingMode roundingMode);
+
public:
/**
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