Method WriteFloatImpl

library/cpp/json/writer/json.cpp:251–265

    template <class TFloat>
    TValueContext TBuf::WriteFloatImpl(TFloat f, EFloatToStringMode mode, int ndigits) {
        char buf[512]; // enough to hold most floats, the same buffer is used in FloatToString implementation
        if (Y_UNLIKELY(!IsValidFloat(f))) {
            if (WriteNanAsString) {
                const size_t size = FloatToString(f, buf, Y_ARRAY_SIZE(buf));
                WriteString(TStringBuf(buf, size));
                return TValueContext(*this);
            } else {
                ythrow TError() << "JSON writer: invalid float value: " << FloatToString(f);
            }
        }
        size_t len = FloatToString(f, buf, Y_ARRAY_SIZE(buf), mode, ndigits);
        UnsafeWriteValue(buf, len);
        return TValueContext(*this);
    }

    TValueContext TBuf::WriteFloat(float f, EFloatToStringMode mode, int ndigits) {
        return WriteFloatImpl(f, mode, ndigits);