| // © 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 |
| #ifndef __NUMBER_DECNUM_H__ |
| #define __NUMBER_DECNUM_H__ |
| |
| #include "decNumber.h" |
| #include "charstr.h" |
| #include "bytesinkutil.h" |
| |
| U_NAMESPACE_BEGIN |
| |
| #define DECNUM_INITIAL_CAPACITY 34 |
| |
| // Export an explicit template instantiation of the MaybeStackHeaderAndArray that is used as a data member of DecNum. |
| // When building DLLs for Windows this is required even though no direct access to the MaybeStackHeaderAndArray leaks out of the i18n library. |
| // (See digitlst.h, pluralaffix.h, datefmt.h, and others for similar examples.) |
| #if U_PF_WINDOWS <= U_PLATFORM && U_PLATFORM <= U_PF_CYGWIN |
| template class U_I18N_API MaybeStackHeaderAndArray<decNumber, char, DECNUM_INITIAL_CAPACITY>; |
| #endif |
| |
| namespace number { |
| namespace impl { |
| |
| /** A very thin C++ wrapper around decNumber.h */ |
| // Exported as U_I18N_API for tests |
| class U_I18N_API DecNum : public UMemory { |
| public: |
| DecNum(); // leaves object in valid but undefined state |
| |
| // Copy-like constructor; use the default move operators. |
| DecNum(const DecNum& other, UErrorCode& status); |
| |
| /** Sets the decNumber to the StringPiece. */ |
| void setTo(StringPiece str, UErrorCode& status); |
| |
| /** Sets the decNumber to the NUL-terminated char string. */ |
| void setTo(const char* str, UErrorCode& status); |
| |
| /** Uses double_conversion to set this decNumber to the given double. */ |
| void setTo(double d, UErrorCode& status); |
| |
| /** Sets the decNumber to the BCD representation. */ |
| void setTo(const uint8_t* bcd, int32_t length, int32_t scale, bool isNegative, UErrorCode& status); |
| |
| void normalize(); |
| |
| void multiplyBy(const DecNum& rhs, UErrorCode& status); |
| |
| void divideBy(const DecNum& rhs, UErrorCode& status); |
| |
| bool isNegative() const; |
| |
| bool isZero() const; |
| |
| void toString(ByteSink& output, UErrorCode& status) const; |
| |
| inline CharString toCharString(UErrorCode& status) const { |
| CharString cstr; |
| CharStringByteSink sink(&cstr); |
| toString(sink, status); |
| return cstr; |
| } |
| |
| inline const decNumber* getRawDecNumber() const { |
| return fData.getAlias(); |
| } |
| |
| private: |
| static constexpr int32_t kDefaultDigits = DECNUM_INITIAL_CAPACITY; |
| MaybeStackHeaderAndArray<decNumber, char, kDefaultDigits> fData; |
| decContext fContext; |
| |
| void _setTo(const char* str, int32_t maxDigits, UErrorCode& status); |
| }; |
| |
| } // namespace impl |
| } // namespace number |
| |
| U_NAMESPACE_END |
| |
| #endif // __NUMBER_DECNUM_H__ |
| |
| #endif /* #if !UCONFIG_NO_FORMATTING */ |