Example usage for java.lang Float NaN

List of usage examples for java.lang Float NaN

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Introduction

In this page you can find the example usage for java.lang Float NaN.

Prototype

float NaN

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Document

A constant holding a Not-a-Number (NaN) value of type float .

Usage

From source file:juicebox.data.MatrixZoomData.java

/**
 * Dump observed matrix to text/* w ww  . ja v a 2  s .  co  m*/
 *
 * @param printWriter Text output stream
 * @param nv1         Normalization vector for X axis
 * @param nv2         Normalization vector for Y axis
 * @throws IOException If fail to write
 */
public void dump(PrintWriter printWriter, double[] nv1, double[] nv2) throws IOException {
    // Get the block index keys, and sort
    List<Integer> blockNumbers = reader.getBlockNumbers(this);
    if (blockNumbers != null) {
        Collections.sort(blockNumbers);

        for (int blockNumber : blockNumbers) {
            Block b = reader.readBlock(blockNumber, this);
            if (b != null) {
                for (ContactRecord rec : b.getContactRecords()) {
                    float counts = rec.getCounts();
                    int x = rec.getBinX();
                    int y = rec.getBinY();
                    if (nv1 != null && nv2 != null) {
                        if (nv1[x] != 0 && nv2[y] != 0 && !Double.isNaN(nv1[x]) && !Double.isNaN(nv2[y])) {
                            counts = (float) (counts / (nv1[x] * nv2[y]));
                        } else {
                            counts = Float.NaN;
                        }
                    }
                    printWriter.println(x * zoom.getBinSize() + "\t" + y * zoom.getBinSize() + "\t" + counts);
                }
            }
        }
    }
    printWriter.close();
}

From source file:org.apache.drill.exec.fn.impl.TestMathFunctionsWithNanInf.java

@Test
public void testCastfloat4Function() throws Exception {
    String table_name = "nan_test.json";
    String json = "{\"nan_col\":NaN, \"inf_col\":Infinity}";
    String query = String.format(
            "select castfloat4(nan_col) as nan_col, castfloat4(inf_col) as inf_col from dfs.`%s`", table_name);
    String[] columns = { "nan_col", "inf_col" };
    Object[] values = { Float.NaN, Float.POSITIVE_INFINITY };
    evalTest(table_name, json, query, columns, values);
}

From source file:jp.furplag.util.commons.NumberUtilsTest.java

/**
 * {@link jp.furplag.util.commons.NumberUtils#compareTo(java.lang.Number, java.lang.Number)}.
 *///from w  w  w . j a v a2 s  .com
@SuppressWarnings("unchecked")
@Test
public void testCompareToNumberNumber() {
    assertEquals("null", (Object) 0, compareTo(null, null));
    assertEquals("null", (Object) 1, compareTo(1, null));
    assertEquals("null", (Object) 1, compareTo(-1, null));
    assertEquals("null", (Object) 1, compareTo(Float.NEGATIVE_INFINITY, null));
    assertEquals("null", (Object) (-1), compareTo(null, 1));
    assertEquals("null", (Object) (-1), compareTo(null, -1));
    assertEquals("null", (Object) (-1), compareTo(null, Double.NEGATIVE_INFINITY));
    assertEquals("Infinity", (Object) 0, compareTo(Float.NEGATIVE_INFINITY, Double.NEGATIVE_INFINITY));
    assertEquals("Infinity", (Object) 0, compareTo(Double.POSITIVE_INFINITY, Float.POSITIVE_INFINITY));
    assertEquals("NaN", (Object) 1, compareTo(Float.NaN, null));
    assertEquals("NaN", (Object) 1, compareTo(Float.NaN, 1));
    assertEquals("NaN", (Object) 1, compareTo(Float.NaN, -1));
    assertEquals("NaN", (Object) 1, compareTo(Float.NaN, Double.POSITIVE_INFINITY));
    assertEquals("NaN", (Object) 0, compareTo(Float.NaN, Double.NaN));
    assertEquals("NaN", (Object) (-1), compareTo(null, Double.NaN));
    assertEquals("NaN", (Object) (-1), compareTo(1, Double.NaN));
    assertEquals("NaN", (Object) (-1), compareTo(-1, Double.NaN));
    assertEquals("NaN", (Object) (-1), compareTo(Float.NEGATIVE_INFINITY, Double.NaN));
    assertEquals("NaN", (Object) 0, compareTo(Double.NaN, Float.NaN));
    for (Class<?> type : NUMBERS) {
        Class<? extends Number> wrapper = (Class<? extends Number>) ClassUtils.primitiveToWrapper(type);
        try {
            Number n = null;
            if (ClassUtils.isPrimitiveWrapper(type)) {
                n = (Number) wrapper.getField("MAX_VALUE").get(null);
            } else {
                n = INFINITY_DOUBLE.pow(2);
                if (BigInteger.class.equals(type))
                    n = ((BigDecimal) n).toBigInteger();
            }
            assertEquals("equals: " + type.getSimpleName(), 0, compareTo(n, new BigDecimal(n.toString())));
        } catch (Exception e) {
            e.printStackTrace();
            fail(e.getMessage() + "\n" + Arrays.toString(e.getStackTrace()));
        }
    }
}

From source file:com.github.jonmarsh.waveform_processing_for_imagej.WaveformUtils.java

/**
 * Computes the median value of an array. If the array length is even, the
 * value returned is equal to the average of the middle two values of the
 * sorted array. The input array is left unchanged. {@code null} input
 * returns {@code Double.NaN}.//from w  ww .  j  a  v a 2s .  co m
 *
 * @param a   input array
 * @return median value in the specified range of input array; if array is
 *         zero length, method returns {@code NaN}
 */
public static final float median(float[] a) {
    if (a != null) {
        return median(a, 0, a.length);
    } else {
        return Float.NaN;
    }
}

From source file:juicebox.data.MatrixZoomData.java

/**
 * Dump observed matrix to binary./* w  ww  . j av a2  s .  co  m*/
 *
 * @param les Binary output stream
 * @param nv1 Normalization vector for X axis
 * @param nv2 Normalization vector for Y axis
 * @throws IOException If fail to write
 */
public void dump(LittleEndianOutputStream les, double[] nv1, double[] nv2) throws IOException {

    // Get the block index keys, and sort
    List<Integer> blockNumbers = reader.getBlockNumbers(this);
    if (blockNumbers != null) {
        Collections.sort(blockNumbers);

        for (int blockNumber : blockNumbers) {
            Block b = reader.readBlock(blockNumber, this);
            if (b != null) {
                for (ContactRecord rec : b.getContactRecords()) {
                    float counts = rec.getCounts();
                    int x = rec.getBinX();
                    int y = rec.getBinY();
                    if (nv1 != null && nv2 != null) {
                        if (nv1[x] != 0 && nv2[y] != 0 && !Double.isNaN(nv1[x]) && !Double.isNaN(nv2[y])) {
                            counts = (float) (counts / (nv1[x] * nv2[y]));
                        } else {
                            counts = Float.NaN;
                        }
                    }
                    les.writeInt(x);
                    les.writeInt(y);
                    les.writeFloat(counts);
                }

            }
        }
    }
}

From source file:dk.dma.ais.packet.AisPacketFiltersStateful.java

/**
 * Use target tracker to extract speed over ground based on mmsi lookup.
 * //from   w w  w.ja v a 2 s  . c  o m
 * @param mmsi
 * @return
 */
private float getSog(int mmsi) {
    float sog = Float.NaN;
    TargetInfo target = targetTracker.get(mmsi);
    if (target != null) {
        AisPacket positionPacket = target.getPositionPacket();
        if (positionPacket != null && positionPacket.tryGetAisMessage() instanceof AisPositionMessage) {
            sog = (float) (((AisPositionMessage) positionPacket.tryGetAisMessage()).getSog() / 10.0);
        }
    }
    return sog;
}

From source file:weave.servlets.GenericServlet.java

/**
 * Tries to convert value to the given type
 * @param value/*  ww  w  .  jav a 2s .co m*/
 * @param type
 * @return value which may have been cast as the new type
 */
@SuppressWarnings({ "unchecked", "rawtypes" })
protected Object cast(Object value, Class<?> type) {
    if (value == null) {
        if (type == double.class || type == Double.class)
            value = Double.NaN;
        else if (type == float.class || type == Float.class)
            value = Float.NaN;
    } else if (value instanceof String) {
        try {
            if (type == int.class || type == Integer.class) {
                value = Integer.parseInt((String) value);
            } else if (type == float.class || type == Float.class) {
                value = Float.parseFloat((String) value);
            } else if (type == double.class || type == Double.class) {
                value = Double.parseDouble((String) value);
            } else if (type == boolean.class || type == Boolean.class) {
                //value = Boolean.parseBoolean((String)value);
                value = ((String) (value)).equalsIgnoreCase("true");
            } else if (type.isArray() || type == List.class) {
                String[][] table = CSVParser.defaultParser.parseCSV((String) value, true);
                if (table.length == 0)
                    value = new String[0]; // empty
                else
                    value = table[0]; // first row

                if (type == List.class)
                    value = Arrays.asList((String[]) value);
                else
                    value = cast(value, type);
            } else if (type == InputStream.class) {
                try {
                    String temp = (String) value;
                    value = (InputStream) new ByteArrayInputStream(temp.getBytes("UTF-8"));
                } catch (Exception e) {
                    return null;
                }
            }
        } catch (NumberFormatException e) {
            // if number parsing fails, leave the original value untouched
        }
    } else if (value instanceof Boolean && type == boolean.class) {
        value = (boolean) (Boolean) value;
    } else if (value.getClass() == ArrayList.class) {
        value = cast(((ArrayList) value).toArray(), type);
    } else if (value.getClass().isArray()) {
        Object[] valueArray = (Object[]) value;
        if (type == List.class) {
            value = ListUtils.copyArrayToList(valueArray, new Vector());
        } else if (type == Object[][].class) {
            Object[][] valueMatrix = new Object[valueArray.length][];
            for (int i = 0; i < valueArray.length; i++) {
                valueMatrix[i] = (Object[]) valueArray[i];
            }
            value = valueMatrix;
        } else if (type == String[][].class) {
            String[][] valueMatrix = new String[valueArray.length][];
            for (int i = 0; i < valueArray.length; i++) {
                // cast Objects to Strings
                Object[] objectArray = (Object[]) valueArray[i];
                valueMatrix[i] = ListUtils.copyStringArray(objectArray, new String[objectArray.length]);
            }
            value = valueMatrix;
        } else if (type == String[].class) {
            value = ListUtils.copyStringArray(valueArray, new String[valueArray.length]);
        } else if (type == double[][].class) {
            double[][] valueMatrix = new double[valueArray.length][];
            for (int i = 0; i < valueArray.length; i++) {
                // cast Objects to doubles
                Object[] objectArray = (Object[]) valueArray[i];
                valueMatrix[i] = ListUtils.copyDoubleArray(objectArray, new double[objectArray.length]);
            }
            value = valueMatrix;
        } else if (type == double[].class) {
            value = ListUtils.copyDoubleArray(valueArray, new double[valueArray.length]);
        } else if (type == int[][].class) {
            int[][] valueMatrix = new int[valueArray.length][];
            for (int i = 0; i < valueArray.length; i++) {
                // cast Objects to doubles
                Object[] objectArray = (Object[]) valueArray[i];
                valueMatrix[i] = ListUtils.copyIntegerArray(objectArray, new int[objectArray.length]);
            }
            value = valueMatrix;
        } else if (type == int[].class) {
            value = ListUtils.copyIntegerArray(valueArray, new int[valueArray.length]);
        }
    } else if (value instanceof Number) {
        if (type == int.class || type == Integer.class) {
            value = ((Number) value).intValue();
        } else if (type == double.class || type == Double.class) {
            value = ((Number) value).doubleValue();
        } else if (type == float.class || type == Float.class) {
            value = ((Number) value).floatValue();
        }
    }
    return value;
}

From source file:org.evosuite.junit.naming.variables.ExplanatoryNamingTestVisitor.java

/**
 * <p>/*from w  ww  .j a v  a2  s . com*/
 * getNumberString
 * </p>
 *
 * @param value
 *            a {@link java.lang.Object} object.
 * @return a {@link java.lang.String} object.
 */
public static String getStringForPrimitiveValue(Object value) {
    assert (value != null);
    if (value.getClass().equals(char.class) || value.getClass().equals(Character.class)) {
        if (CharUtils.isAsciiNumeric((Character) value))
            return "Numeric";
        else if (CharUtils.isAsciiAlpha((Character) value))
            return "Alpha";
        else
            return "NotAlphanumeric";
    } else if (value.getClass().equals(String.class)) {
        return ((String) value).isEmpty() ? "EmptyString" : "NonEmptyString";
    } else if (value.getClass().equals(float.class) || value.getClass().equals(Float.class)) {
        if (value.toString().equals("" + Float.NaN))
            return "NaN";
        else if (value.toString().equals("" + Float.NEGATIVE_INFINITY))
            return "NegativeInf";
        else if (value.toString().equals("" + Float.POSITIVE_INFINITY))
            return "PositiveInf";
        else
            return (((Float) value) < 0F) ? "Negative" : (((Float) value) == 0F) ? "Zero" : "Positive";
    } else if (value.getClass().equals(double.class) || value.getClass().equals(Double.class)) {
        if (value.toString().equals("" + Double.NaN))
            return "NaN";
        else if (value.toString().equals("" + Double.NEGATIVE_INFINITY))
            return "NegativeInf";
        else if (value.toString().equals("" + Double.POSITIVE_INFINITY))
            return "PositiveInf";
        else
            return (((Double) value) < 0.0) ? "Negative" : (((Double) value) == 0.0) ? "Zero" : "Positive";
    } else if (value.getClass().equals(long.class) || value.getClass().equals(Long.class)) {
        return (((Long) value) < 0) ? "Negative" : (((Long) value) == 0) ? "Zero" : "Positive";
    } else if (value.getClass().equals(byte.class) || value.getClass().equals(Byte.class)) {
        return (((Byte) value) < 0) ? "Negative" : (((Byte) value) == 0) ? "Zero" : "Positive";
    } else if (value.getClass().equals(short.class) || value.getClass().equals(Short.class)) {
        return (((Short) value) < 0) ? "Negative" : (((Short) value) == 0) ? "Zero" : "Positive";
    } else if (value.getClass().equals(int.class) || value.getClass().equals(Integer.class)) {
        int val = ((Integer) value).intValue();
        if (val == Integer.MAX_VALUE)
            return "MaxInt";
        else if (val == Integer.MIN_VALUE)
            return "MinInt";
        else
            return (((Integer) value) < 0) ? "Negative" : (((Integer) value) == 0) ? "Zero" : "Positive";
    } else if (value.getClass().isEnum() || value instanceof Enum) {
        return "EnumValue";
    } else if (value.getClass().equals(Boolean.class)) {
        return capitalize(Boolean.toString((Boolean) value));
    } else {
        // This should not happen
        assert (false);
        return value.toString();
    }
}

From source file:dk.dma.ais.packet.AisPacketFiltersStateful.java

/**
 * Use target tracker to extract course over ground based on mmsi lookup.
 * //from   ww w  . j  a va2s.com
 * @param mmsi
 * @return
 */
private float getCog(int mmsi) {
    float cog = Float.NaN;
    TargetInfo target = targetTracker.get(mmsi);
    if (target != null) {
        AisPacket positionPacket = target.getPositionPacket();
        if (positionPacket != null && positionPacket.tryGetAisMessage() instanceof AisPositionMessage) {
            cog = (float) (((AisPositionMessage) positionPacket.tryGetAisMessage()).getCog() / 10.0);
        }
    }
    return cog;
}