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+// © 2022 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+
+#ifndef __USIMPLENUMBERFORMATTER_H__
+#define __USIMPLENUMBERFORMATTER_H__
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_FORMATTING
+
+#include "unicode/uformattednumber.h"
+#include "unicode/unumberoptions.h"
+
+/**
+ * \file
+ * \brief C API: Simple number formatting focused on low memory and code size.
+ *
+ * These functions render locale-aware number strings but without the bells and whistles found in
+ * other number formatting APIs such as those in unumberformatter.h, like units and currencies.
+ *
+ * Example using C++ helpers:
+ *
+ * <pre>
+ * LocalUSimpleNumberFormatterPointer uformatter(usnumf_openForLocale("de-CH", status));
+ * LocalUFormattedNumberPointer uresult(unumf_openResult(status));
+ * usnumf_formatInt64(uformatter.getAlias(), 55, uresult.getAlias(), status);
+ * assertEquals("",
+ *     u"55",
+ *     ufmtval_getString(unumf_resultAsValue(uresult.getAlias(), status), nullptr, status));
+ * </pre>
+ *
+ * Example using pure C:
+ * 
+ * <pre>
+ * UErrorCode ec = U_ZERO_ERROR;
+ * USimpleNumberFormatter* uformatter = usnumf_openForLocale("bn", &ec);
+ * USimpleNumber* unumber = usnum_openForInt64(1000007, &ec);
+ * UFormattedNumber* uresult = unumf_openResult(&ec);
+ * usnumf_format(uformatter, unumber, uresult, &ec);
+ * int32_t len;
+ * const UChar* str = ufmtval_getString(unumf_resultAsValue(uresult, &ec), &len, &ec);
+ * if (assertSuccess("Formatting end-to-end", &ec)) {
+ *     assertUEquals("Should produce a result in Bangla digits", u"১০,০০,০০৭", str);
+ * }
+
+ * // Cleanup:
+ * unumf_closeResult(uresult);
+ * usnum_close(unumber);
+ * usnumf_close(uformatter);
+ * </pre>
+ */
+
+#ifndef U_HIDE_DRAFT_API
+
+
+/**
+ * An explicit sign option for a SimpleNumber.
+ *
+ * @draft ICU 73
+ */
+typedef enum USimpleNumberSign {
+    /**
+     * Render a plus sign.
+     *
+     * @draft ICU 73
+     */
+    UNUM_SIMPLE_NUMBER_PLUS_SIGN,
+    /**
+     * Render no sign.
+     *
+     * @draft ICU 73
+     */
+    UNUM_SIMPLE_NUMBER_NO_SIGN,
+    /**
+     * Render a minus sign.
+     *
+     * @draft ICU 73
+     */
+    UNUM_SIMPLE_NUMBER_MINUS_SIGN,
+} USimpleNumberSign;
+
+
+struct USimpleNumber;
+/**
+ * C-compatible version of icu::number::SimpleNumber.
+ *
+ * @draft ICU 73
+ */
+typedef struct USimpleNumber USimpleNumber;
+
+
+struct USimpleNumberFormatter;
+/**
+ * C-compatible version of icu::number::SimpleNumberFormatter.
+ *
+ * @draft ICU 73
+ */
+typedef struct USimpleNumberFormatter USimpleNumberFormatter;
+
+
+/**
+ * Creates a new USimpleNumber to be formatted with a USimpleNumberFormatter.
+ *
+ * @draft ICU 73
+ */
+U_CAPI USimpleNumber* U_EXPORT2
+usnum_openForInt64(int64_t value, UErrorCode* ec);
+
+
+/**
+ * Overwrites the value in a USimpleNumber to an int64_t.
+ *
+ * This can be used to reset the number value after formatting.
+ *
+ * @draft ICU 73
+ */
+U_CAPI void U_EXPORT2
+usnum_setToInt64(USimpleNumber* unumber, int64_t value, UErrorCode* ec);
+
+
+/**
+ * Changes the value of the USimpleNumber by a power of 10.
+ *
+ * This function immediately mutates the inner value.
+ *
+ * @draft ICU 73
+ */
+U_CAPI void U_EXPORT2
+usnum_multiplyByPowerOfTen(USimpleNumber* unumber, int32_t power, UErrorCode* ec);
+
+
+/**
+ * Rounds the value currently stored in the USimpleNumber to the given power of 10.
+ *
+ * This function immediately mutates the inner value.
+ *
+ * @draft ICU 73
+ */
+U_CAPI void U_EXPORT2
+usnum_roundTo(USimpleNumber* unumber, int32_t power, UNumberFormatRoundingMode roundingMode, UErrorCode* ec);
+
+
+/**
+ * Pads the beginning of the number with zeros up to the given minimum number of integer digits.
+ *
+ * This setting is applied upon formatting the number.
+ *
+ * @draft ICU 73
+ */
+U_CAPI void U_EXPORT2
+usnum_setMinimumIntegerDigits(USimpleNumber* unumber, int32_t minimumIntegerDigits, UErrorCode* ec);
+
+
+/**
+ * Pads the end of the number with zeros up to the given minimum number of fraction digits.
+ *
+ * This setting is applied upon formatting the number.
+ *
+ * @draft ICU 73
+ */
+U_CAPI void U_EXPORT2
+usnum_setMinimumFractionDigits(USimpleNumber* unumber, int32_t minimumFractionDigits, UErrorCode* ec);
+
+
+/**
+ * Truncates digits from the beginning of the number to the given maximum number of integer digits.
+ *
+ * This function immediately mutates the inner value.
+ *
+ * @draft ICU 73
+ */
+U_CAPI void U_EXPORT2
+usnum_truncateStart(USimpleNumber* unumber, int32_t maximumIntegerDigits, UErrorCode* ec);
+
+
+/**
+ * Sets the sign of the number: an explicit plus sign, explicit minus sign, or no sign.
+ *
+ * This setting is applied upon formatting the number.
+ *
+ * NOTE: This does not support accounting sign notation.
+ *
+ * @draft ICU 73
+ */
+U_CAPI void U_EXPORT2
+usnum_setSign(USimpleNumber* unumber, USimpleNumberSign sign, UErrorCode* ec);
+
+
+/**
+ * Creates a new USimpleNumberFormatter with all locale defaults.
+ *
+ * @draft ICU 73
+ */
+U_CAPI USimpleNumberFormatter* U_EXPORT2
+usnumf_openForLocale(const char* locale, UErrorCode* ec);
+
+
+/**
+ * Creates a new USimpleNumberFormatter, overriding the grouping strategy.
+ *
+ * @draft ICU 73
+ */
+U_CAPI USimpleNumberFormatter* U_EXPORT2
+usnumf_openForLocaleAndGroupingStrategy(
+       const char* locale, UNumberGroupingStrategy groupingStrategy, UErrorCode* ec);
+
+
+/**
+ * Formats a number using this SimpleNumberFormatter.
+ *
+ * The USimpleNumber is cleared after calling this function. It can be re-used via
+ * usnum_setToInt64.
+ *
+ * @draft ICU 73
+ */
+U_CAPI void U_EXPORT2
+usnumf_format(
+    const USimpleNumberFormatter* uformatter,
+    USimpleNumber* unumber,
+    UFormattedNumber* uresult,
+    UErrorCode* ec);
+
+
+/**
+ * Formats an integer using this SimpleNumberFormatter.
+ *
+ * For more control over the formatting, use USimpleNumber.
+ *
+ * @draft ICU 73
+ */
+U_CAPI void U_EXPORT2
+usnumf_formatInt64(
+    const USimpleNumberFormatter* uformatter,
+    int64_t value,
+    UFormattedNumber* uresult,
+    UErrorCode* ec);
+
+
+/**
+ * Frees the memory held by a USimpleNumber.
+ *
+ * NOTE: Normally, a USimpleNumber should be adopted by usnumf_formatAndAdoptNumber.
+ *
+ * @draft ICU 73
+ */
+U_CAPI void U_EXPORT2
+usnum_close(USimpleNumber* unumber);
+
+
+/**
+ * Frees the memory held by a USimpleNumberFormatter.
+ *
+ * @draft ICU 73
+ */
+U_CAPI void U_EXPORT2
+usnumf_close(USimpleNumberFormatter* uformatter);
+
+
+#if U_SHOW_CPLUSPLUS_API
+U_NAMESPACE_BEGIN
+
+/**
+ * \class LocalUSimpleNumberPointer
+ * "Smart pointer" class; closes a USimpleNumber via usnum_close().
+ * For most methods see the LocalPointerBase base class.
+ *
+ * NOTE: Normally, a USimpleNumber should be adopted by usnumf_formatAndAdoptNumber.
+ * If you use LocalUSimpleNumberPointer, call `.orphan()` when passing to that function.
+ *
+ * Usage:
+ * <pre>
+ * LocalUSimpleNumberPointer uformatter(usnumf_openForInteger(...));
+ * // no need to explicitly call usnum_close()
+ * </pre>
+ *
+ * @see LocalPointerBase
+ * @see LocalPointer
+ * @draft ICU 73
+ */
+U_DEFINE_LOCAL_OPEN_POINTER(LocalUSimpleNumberPointer, USimpleNumber, usnum_close);
+
+/**
+ * \class LocalUSimpleNumberFormatterPointer
+ * "Smart pointer" class; closes a USimpleNumberFormatter via usnumf_close().
+ * For most methods see the LocalPointerBase base class.
+ *
+ * Usage:
+ * <pre>
+ * LocalUSimpleNumberFormatterPointer uformatter(usnumf_openForLocale(...));
+ * // no need to explicitly call usnumf_close()
+ * </pre>
+ *
+ * @see LocalPointerBase
+ * @see LocalPointer
+ * @draft ICU 73
+ */
+U_DEFINE_LOCAL_OPEN_POINTER(LocalUSimpleNumberFormatterPointer, USimpleNumberFormatter, usnumf_close);
+
+U_NAMESPACE_END
+#endif // U_SHOW_CPLUSPLUS_API
+
+#endif // U_HIDE_DRAFT_API
+
+#endif /* #if !UCONFIG_NO_FORMATTING */
+#endif //__USIMPLENUMBERFORMATTER_H__