namespace gradients {

using namespace std;

// ================== Helper functions =================

// Fills data with values [start,end) with given step size.
void Range(vector<int32_t>* data, int32_t start, int32_t end,
           int32_t step = 1) {
  for (int32_t i = start; i < end; i += step) {
    (*data)[i] = i;
  }
}

// Fills out_dims with the dimensions of the given tensor.

// MarshalXML - produces the xml representation of the Filter struct
// only one of Prefix, And and Tag should be present in the output.
func (f Filter) MarshalXML(e *xml.Encoder, start xml.StartElement) error {
	if !f.set {
		return nil
	}

	if err := e.EncodeToken(start); err != nil {
		return err
	}

	switch {
	case !f.And.isEmpty():
		if err := e.EncodeElement(f.And, xml.StartElement{Name: xml.Name{Local: "And"}}); err != nil {

            if(( n = response.dataLength ) <= 0 ) {
                return (int)((fp - start) > 0L ? fp - start : -1);
            }
            fp += n;
            len -= n;
            response.off += n;
        } while( len > 0 && n == r );

        return (int)(fp - start);
    }
    public final void readFully( byte b[] ) throws SmbException {
        readFully( b, 0, b.length );
    }

   * position + 8. The array must have at least 8 bytes from offset (inclusive).
   *
   * @param input the input bytes
   * @param offset the offset into the array at which to start
   * @return a long of a concatenated 8 bytes
   */
  static long load64(byte[] input, int offset) {
    // We don't want this in production code as this is the most critical part of the loop.

        int start = dstIndex;

        writeInt2( informationLevel, dst, dstIndex );
        dstIndex += 2;
        dst[dstIndex++] = (byte)0x00;
        dst[dstIndex++] = (byte)0x00;
        dst[dstIndex++] = (byte)0x00;
        dst[dstIndex++] = (byte)0x00;
        dstIndex += writeString( path, dst, dstIndex );

        return dstIndex - start;
    }

    protected int writeBytesWireFormat ( byte[] dst, int dstIndex ) {
        int start = dstIndex;
        SMBUtil.writeInt2(24, dst, dstIndex);
        dstIndex += 2;
        dstIndex += 2; // Reserved1
        dstIndex += 4; // Reserved2

        System.arraycopy(this.fileId, 0, dst, dstIndex, 16);
        dstIndex += 16;

        return dstIndex - start;
    }


    /**
     * {@inheritDoc}
     *

        this.length = SMBUtil.readInt4(buffer, bufferIndex);
        return 4;
    }


    @Override
    protected int readDataWireFormat ( byte[] buffer, int bufferIndex, int len ) {
        int start = bufferIndex;

        if ( this.getErrorCode() != 0 )
            return 4;

        try {
            this.securityDescriptor = new SecurityDescriptor();

        return 2;
    }
    int writeParametersWireFormat( byte[] dst, int dstIndex ) {
        int start = dstIndex;

        writeInt2( maxReferralLevel, dst, dstIndex );
        dstIndex += 2;
        dstIndex += writeString( path, dst, dstIndex );

        return dstIndex - start;
    }
    int writeDataWireFormat( byte[] dst, int dstIndex ) {
        return 0;
    }

    @Override
    protected int writeSetupWireFormat ( byte[] dst, int dstIndex ) {
        return 0;
    }


    @Override
    protected int writeParametersWireFormat ( byte[] dst, int dstIndex ) {
        int start = dstIndex;
        byte[] descr;

        try {
            descr = DESCR.getBytes("ASCII");
        }
        catch ( UnsupportedEncodingException uee ) {
            return 0;
        }

        int start = dstIndex;

        SMBUtil.writeInt2(this.fid, dst, dstIndex);
        dstIndex += 2;
        dst[ dstIndex++ ] = (byte) 0x00; // Reserved
        dst[ dstIndex++ ] = (byte) 0x00; // Reserved
        SMBUtil.writeInt4(this.securityInformation, dst, dstIndex);
        dstIndex += 4;
        return dstIndex - start;
    }


    @Override