1 files changed, 88 insertions, 0 deletions
diff --git a/intl/icu/source/i18n/number_notation.cpp b/intl/icu/source/i18n/number_notation.cpp
new file mode 100644
index 0000000000..b3cabb57a5
--- /dev/null
+++ b/intl/icu/source/i18n/number_notation.cpp
@@ -0,0 +1,88 @@
+// © 2017 and later: Unicode, Inc. and others.
+// License & terms of use: http://www.unicode.org/copyright.html
+
+#include "unicode/utypes.h"
+
+#if !UCONFIG_NO_FORMATTING
+
+#include "unicode/numberformatter.h"
+#include "number_types.h"
+
+using namespace icu;
+using namespace icu::number;
+using namespace icu::number::impl;
+
+
+ScientificNotation Notation::scientific() {
+    // NOTE: ISO C++ does not allow C99 designated initializers.
+    ScientificSettings settings;
+    settings.fEngineeringInterval = 1;
+    settings.fRequireMinInt = false;
+    settings.fMinExponentDigits = 1;
+    settings.fExponentSignDisplay = UNUM_SIGN_AUTO;
+    NotationUnion union_;
+    union_.scientific = settings;
+    return {NTN_SCIENTIFIC, union_};
+}
+
+ScientificNotation Notation::engineering() {
+    ScientificSettings settings;
+    settings.fEngineeringInterval = 3;
+    settings.fRequireMinInt = false;
+    settings.fMinExponentDigits = 1;
+    settings.fExponentSignDisplay = UNUM_SIGN_AUTO;
+    NotationUnion union_;
+    union_.scientific = settings;
+    return {NTN_SCIENTIFIC, union_};
+}
+
+ScientificNotation::ScientificNotation(int8_t fEngineeringInterval, bool fRequireMinInt,
+                                       impl::digits_t fMinExponentDigits,
+                                       UNumberSignDisplay fExponentSignDisplay) {
+    ScientificSettings settings;
+    settings.fEngineeringInterval = fEngineeringInterval;
+    settings.fRequireMinInt = fRequireMinInt;
+    settings.fMinExponentDigits = fMinExponentDigits;
+    settings.fExponentSignDisplay = fExponentSignDisplay;
+    NotationUnion union_;
+    union_.scientific = settings;
+    *this = {NTN_SCIENTIFIC, union_};
+}
+
+Notation Notation::compactShort() {
+    NotationUnion union_;
+    union_.compactStyle = CompactStyle::UNUM_SHORT;
+    return {NTN_COMPACT, union_};
+}
+
+Notation Notation::compactLong() {
+    NotationUnion union_;
+    union_.compactStyle = CompactStyle::UNUM_LONG;
+    return {NTN_COMPACT, union_};
+}
+
+Notation Notation::simple() {
+    return {};
+}
+
+ScientificNotation
+ScientificNotation::withMinExponentDigits(int32_t minExponentDigits) const {
+    if (minExponentDigits >= 1 && minExponentDigits <= kMaxIntFracSig) {
+        ScientificSettings settings = fUnion.scientific;
+        settings.fMinExponentDigits = static_cast<digits_t>(minExponentDigits);
+        NotationUnion union_ = {settings};
+        return {NTN_SCIENTIFIC, union_};
+    } else {
+        return {U_NUMBER_ARG_OUTOFBOUNDS_ERROR};
+    }
+}
+
+ScientificNotation
+ScientificNotation::withExponentSignDisplay(UNumberSignDisplay exponentSignDisplay) const {
+    ScientificSettings settings = fUnion.scientific;
+    settings.fExponentSignDisplay = exponentSignDisplay;
+    NotationUnion union_ = {settings};
+    return {NTN_SCIENTIFIC, union_};
+}
+
+#endif /* #if !UCONFIG_NO_FORMATTING */