You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
88 lines
2.6 KiB
88 lines
2.6 KiB
// © 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 */
|