Examples of java.io.DataInputStream.readFloat()

java.io.DataInputStream.readFloat()
See the general contract of the readFloat method of DataInput.
Bytes for this operation are read from the contained input stream. @return the next four bytes of this input stream, interpreted as afloat. @exception EOFException if this input stream reaches the end beforereading four bytes. @exception IOException the stream has been closed and the containedinput stream does not support reading after close, or another I/O error occurs. @see java.io.DataInputStream#readInt() @see java.lang.Float#intBitsToFloat(int)

   * @return the version value of saved file
   * @throws Exception if it fails to read value
   */
  protected float readVersionFile(File file) throws Exception {
    DataInputStream dis = new DataInputStream(new FileInputStream(file));
    float version = dis.readFloat();
    dis.close();
    return version;
  }


  /**

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            } else {
                src = bytes;
            }
            DataInputStream stream =
                  new DataInputStream(new ByteArrayInputStream(src, offset, 4));
            return stream.readFloat();
        } catch (Exception ex) {
            throw new DescriptorException(ex);
        }
    }

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                int nzInCurCol = dis.readInt();         
                dos.writeInt(nzInCurCol);
                // Transform all non zero values for the new matrix.
                for (int index = 0; index < nzInCurCol; ++index) {
                    int row = dis.readInt();
                    double value = dis.readFloat();
                    dos.writeInt(row);
                    dos.writeFloat(
                            (float) transform.transform(row, col, value));
                }
            }

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        for (; entriesSeen < entries; ++col) {
            int nonZero = dis.readInt();


            for (int i = 0; i < nonZero; ++i, ++entriesSeen) {
                int row = dis.readInt();
                float val = dis.readFloat();
                if (transpose)
                    pw.println((1 + col) + " " + (1 + row) + " " + val);
                else
                    pw.println((1 + row) + " " + (1 + col) + " " + val);
            }

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            : Matrices.create(rows, cols, matrixType);
        
        if (transposeOnRead) {
            for (int row = 0; row < rows; ++row) {
                for (int col = 0; col < cols; ++col) {
                    m.set(col, row, dis.readFloat());
                }
            }
        }
        else {
            for (int row = 0; row < rows; ++row) {

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            }
        }
        else {
            for (int row = 0; row < rows; ++row) {
                for (int col = 0; col < cols; ++col) {
                    m.set(row, col, dis.readFloat());
                }
            }
        }
        dis.close();
        return m;

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                int nzInCol = dis.readInt();
                int[] indices = new int[nzInCol];
                double[] vals = new double[nzInCol];
                for (int i = 0; i < nzInCol; ++i, ++entriesSeen) {
                    indices[i] = dis.readInt();
                    vals[i] = dis.readFloat();
                }
                SparseDoubleVector rowVec = 
                    new CompactSparseVector(indices, vals, rows);
                rowArr[curRow] = rowVec;
                ++curRow;

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            int entriesSeen = 0;
            int col = 0;
            for (; entriesSeen < nz; ++col) {
                int nzInCol = dis.readInt();
                for (int i = 0; i < nzInCol; ++i, ++entriesSeen) {
                    m.set(dis.readInt(), col, dis.readFloat());
                }
            }
        }
        dis.close();

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            dos.writeInt(cols);


            // Traverse each row and column value, transforming each entry.
            for (int row = 0; row < rows; ++row) {
                for (int col = 0; col < cols; ++col) {
                    double val = dis.readFloat();
                    dos.writeFloat((float) transform.transform(row, col, val));
                }
            }


            dos.close();

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    @Override
    public Float bytesToFloat(byte[] b) {
        DataInputStream dis = new DataInputStream(new ByteArrayInputStream(b));
        try {
            return new Float(dis.readFloat());
        } catch (IOException e) {
            LogUtils.warn(this, "Unable to convert bytearray to float, " +
                    "caught IOException <" + e.getMessage() + ">",
                    PigWarning.FIELD_DISCARDED_TYPE_CONVERSION_FAILED, 
                    mLog);

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