Example usage for java.lang Float MAX

Introduction

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

Prototype

float MAX_VALUE

To view the source code for java.lang Float MAX_VALUE.

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Document

A constant holding the largest positive finite value of type float , (2-2^-23)·2¹²⁷.

Usage

From source file:com.fredhopper.core.connector.index.generate.validator.FloatAttributeValidator.java

@Override
protected void validateValue(final FhAttributeData attribute, final List<Violation> violations) {
    final Table<Optional<String>, Optional<Locale>, String> values = attribute.getValues();
    final Map<Optional<Locale>, String> valueMap = values.row(Optional.empty());
    if (CollectionUtils.isEmpty(valueMap) || valueMap.entrySet().size() != 1
            || !valueMap.containsKey(Optional.empty())) {
        rejectValue(attribute, violations, "The \"float\" attribute value cannot be localized.");
        return;//from   w  w w.  j av  a2 s .  c  o  m
    }

    final String value = valueMap.get(Optional.empty());
    try {
        if (StringUtils.isBlank(value) || !(Float.parseFloat(value) > 0
                && Double.valueOf(Float.MAX_VALUE).compareTo(Double.valueOf(value)) > 0)) {
            rejectValue(attribute, violations,
                    "The \"float\" attribute value is not in the supported value range.");
        }
    } catch (final NumberFormatException ex) {
        rejectValue(attribute, violations,
                "The \"float\" attribute value does not have the appropriate format.");
    }
}

From source file:org.apache.hadoop.mapred.GenReduce.java

@Override
public void reduce(Text key, Iterator<Text> values, OutputCollector<Text, Text> output, Reporter reporter)
        throws IOException {
    FSDataOutputStream out = null;/* w w  w  .j av  a  2s .co m*/
    try {
        int size = 0;
        FileSystem fs = FileSystem.get(conf);
        double averageIORate = 0;
        List<Float> list = new ArrayList<Float>();

        String output_dir = conf.get(OUTPUT_DIR_KEY);
        Path result_file = new Path(output_dir, "results");
        if (fs.exists(result_file)) {
            fs.delete(result_file);
        }
        out = fs.create(result_file, true);

        long nmaps = conf.getLong(NUMBER_OF_MAPS_KEY, NMAPS);
        long nthreads = conf.getLong(NUMBER_OF_THREADS_KEY, NTHREADS);

        out.writeChars("-----------------------------\n");
        out.writeChars("Number of mapper :\t\t\t" + nmaps + "\n");
        out.writeChars("Number of threads :\t\t\t" + nthreads + "\n");

        float min = Float.MAX_VALUE;
        float max = Float.MIN_VALUE;
        Class<?> clazz = conf.getClass(THREAD_CLASS_KEY, null);
        if (clazz == null) {
            throw new IOException("Class " + conf.get(THREAD_CLASS_KEY) + " not found");
        }
        GenThread t = (GenThread) ReflectionUtils.newInstance(clazz, conf);
        t.reset();
        long total_files = 0;
        long total_processed_size = 0;
        long total_num_errors = 0;
        String total_error = "";
        TypeReference<Map<String, String>> type = new TypeReference<Map<String, String>>() {
        };
        while (values.hasNext()) {
            Map<String, String> stat = mapper.readValue(values.next().toString(), type);
            size++;
            total_files += Long.parseLong(stat.get("files"));
            total_processed_size += Long.parseLong(stat.get("size"));
            total_num_errors += Long.parseLong(stat.get("nerrors"));
            total_error += stat.get("errors");
            double ioRate = Double.parseDouble(stat.get("rate"));
            if (ioRate > max)
                max = (float) ioRate;
            if (ioRate < min)
                min = (float) ioRate;
            list.add((float) ioRate);
            averageIORate += ioRate;
            t.analyze(stat);
        }

        out.writeChars("Number of files processed:\t\t" + total_files + "\n");
        out.writeChars("Number of size processed:\t\t" + total_processed_size + "\n");
        out.writeChars("Min IO Rate(MB/sec): \t\t\t" + min + "\n");
        out.writeChars("Max IO Rate(MB/sec): \t\t\t" + max + "\n");
        averageIORate /= size;
        float temp = (float) 0.0;
        for (int i = 0; i < list.size(); i++) {
            temp += Math.pow(list.get(i) - averageIORate, 2);
        }
        out.writeChars("Average(MB/sec): \t\t\t" + averageIORate + "\n");
        float dev = (float) Math.sqrt(temp / size);
        out.writeChars("Std. dev: \t\t\t\t" + dev + "\n");
        out.writeChars("Total number of errors:\t\t\t" + total_num_errors + "\n");
        out.writeChars(total_error);
        t.output(out);
    } catch (IOException e) {
        LOG.error("Error:", e);
        throw e;
    } finally {
        out.close();

    }
}

From source file:com.redhat.lightblue.metadata.types.DoubleTypeTest.java

@Test
public void testCastFloat() {
    assertTrue(doubleType.cast(Float.MAX_VALUE) instanceof Double);
}

From source file:org.nd4j.linalg.api.ops.impl.accum.Max.java

@Override
public float zeroFloat() {
    return -Float.MAX_VALUE;
}

From source file:test.uk.co.modularaudio.util.audio.gui.buffervis.BufferVisualiser.java

private void computeMinMax(final float[] buffer, final int numSamples) {
    minVal = Float.MAX_VALUE;
    maxVal = Float.MIN_VALUE;/*from ww w .j av  a2s  . c  o m*/

    for (int i = 0; i < numSamples; i++) {
        final float v = buffer[i];
        if (Float.isNaN(v) || Float.isInfinite(v)) {
            continue;
        }
        if (v < minVal)
            minVal = v;
        if (v > maxVal)
            maxVal = v;
    }
    diff = maxVal - minVal;
}

From source file:com.redhat.lightblue.metadata.types.BigDecimalTypeTest.java

@Test
public void testCastFloat() {
    assertTrue(bigDecimalType.cast(Float.MAX_VALUE) instanceof BigDecimal);
}

From source file:org.nd4j.linalg.api.ops.impl.accum.Min.java

@Override
public float zeroFloat() {
    return Float.MAX_VALUE;
}

From source file:dtu.ds.warnme.app.location.FollowMeLocationSource.java

private void checkEventsProximity(Location location) {
    if (cachedEvents == null || cachedEvents.isEmpty()) {
        return;/* w  w w.j av  a2  s . c  o m*/
    }

    Float closestDistance = Float.MAX_VALUE;
    Event closestEvent = null;

    for (Event event : cachedEvents) {
        Float distance = location.distanceTo(event.getLocation());
        Float bearing = location.bearingTo(event.getLocation());

        if (distance < closestDistance && bearing < 90f) {
            closestDistance = distance;
            closestEvent = event;
        }
    }

    if (closestEvent != null && closestDistance < 500f) {
        locationSourceListener.onApproachingEvent(closestEvent);
    }
}

From source file:com.opensymphony.xwork2.conversion.impl.StringConverterTest.java

public void testFloatToStringConversionPL() throws Exception {
    // given//from w ww.j  av  a2 s. c  om
    StringConverter converter = new StringConverter();
    Map<String, Object> context = new HashMap<>();
    context.put(ActionContext.LOCALE, new Locale("pl", "PL"));

    // when has max fraction digits
    Object value = converter.convertValue(context, null, null, null, Float.MIN_VALUE, null);

    // then does not lose fraction digits
    assertEquals("0," + StringUtils.repeat('0', 44) + "14", value);

    // when has max integer digits
    value = converter.convertValue(context, null, null, null, Float.MAX_VALUE, null);

    // then does not lose integer digits
    assertEquals("34028235" + StringUtils.repeat('0', 31), value);

    // when cannot be represented exactly with a finite binary number
    value = converter.convertValue(context, null, null, null, 0.1f, null);

    // then produce the shortest decimal representation that can unambiguously identify the true value of the floating-point number
    assertEquals("0,1", value);
}

From source file:hivemall.regression.PassiveAggressiveRegressionUDTF.java

protected float aggressiveness() {
    return Float.MAX_VALUE;
}

Example usage for java.lang Float MAX_VALUE

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Prototype

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