pitrou commented on code in PR #43957:
URL: https://github.com/apache/arrow/pull/43957#discussion_r1763383435
##########
cpp/src/arrow/util/decimal.cc:
##########
@@ -342,6 +477,56 @@ struct Decimal128RealConversion
} // namespace
+Decimal32::Decimal32(const std::string& str) : Decimal32() {
+ *this = FromString(str).ValueOrDie();
+}
+
+Result<Decimal32> Decimal32::FromReal(float x, int32_t precision, int32_t
scale) {
+ return Decimal32RealConversion::FromReal(x, precision, scale);
+}
+
+Result<Decimal32> Decimal32::FromReal(double x, int32_t precision, int32_t
scale) {
+ return Decimal32RealConversion::FromReal(x, precision, scale);
+}
+
+float Decimal32::ToFloat(int32_t scale) const {
+ return Decimal32RealConversion::ToReal<float>(*this, scale);
+}
+
+double Decimal32::ToDouble(int32_t scale) const {
+ return Decimal32RealConversion::ToReal<double>(*this, scale);
+}
+
+std::string Decimal32::ToIntegerString() const { return
std::to_string(value_); }
+
+Decimal32::operator int64_t() const { return static_cast<int64_t>(value_); }
+
+Decimal32::operator Decimal64() const { return
Decimal64(static_cast<int64_t>(value_)); }
+
+Decimal64::Decimal64(const std::string& str) : Decimal64() {
+ *this = FromString(str).ValueOrDie();
+}
+
+Result<Decimal64> Decimal64::FromReal(float x, int32_t precision, int32_t
scale) {
+ return Decimal64RealConversion::FromReal(x, precision, scale);
+}
+
+Result<Decimal64> Decimal64::FromReal(double x, int32_t precision, int32_t
scale) {
+ return Decimal64RealConversion::FromReal(x, precision, scale);
+}
+
+float Decimal64::ToFloat(int32_t scale) const {
+ return Decimal64RealConversion::ToReal<float>(*this, scale);
+}
+
+double Decimal64::ToDouble(int32_t scale) const {
+ return Decimal64RealConversion::ToReal<double>(*this, scale);
+}
+
+std::string Decimal64::ToIntegerString() const { return
std::to_string(value_); }
Review Comment:
Also `FormatChars` here.
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