Example usage for java.lang Math ceil

Introduction

In this page you can find the example usage for java.lang Math ceil.

Prototype

public static double ceil(double a) 

Source Link

Document

Returns the smallest (closest to negative infinity) double value that is greater than or equal to the argument and is equal to a mathematical integer.

Usage

From source file:com.linkedin.pinot.core.io.writer.impl.v2.FixedBitMultiValueWriter.java

public FixedBitMultiValueWriter(File file, int numDocs, int totalNumValues, int columnSizeInBits)
        throws Exception {
    float averageValuesPerDoc = totalNumValues / numDocs;
    this.docsPerChunk = (int) (Math.ceil(PREFERRED_NUM_VALUES_PER_CHUNK / averageValuesPerDoc));
    this.numChunks = (numDocs + docsPerChunk - 1) / docsPerChunk;
    chunkOffsetHeaderSize = numChunks * SIZE_OF_INT * NUM_COLS_IN_HEADER;
    bitsetSize = (totalNumValues + 7) / 8;
    rawDataSize = SizeUtil.computeBytesRequired(totalNumValues, columnSizeInBits,
            SizeUtil.BIT_UNPACK_BATCH_SIZE);
    LOGGER.info("Allocating:{} for rawDataSize to store {} values of bits:{}", rawDataSize, totalNumValues,
            columnSizeInBits);/*w w  w . j  a  v a 2s  . c o m*/
    totalSize = chunkOffsetHeaderSize + bitsetSize + rawDataSize;
    raf = new RandomAccessFile(file, "rw");
    chunkOffsetsBuffer = MmapUtils.mmapFile(raf, FileChannel.MapMode.READ_WRITE, 0, chunkOffsetHeaderSize, file,
            this.getClass().getSimpleName() + " chunkOffsetsBuffer");
    bitsetBuffer = MmapUtils.mmapFile(raf, FileChannel.MapMode.READ_WRITE, chunkOffsetHeaderSize, bitsetSize,
            file, this.getClass().getSimpleName() + " bitsetBuffer");
    rawDataBuffer = MmapUtils.mmapFile(raf, FileChannel.MapMode.READ_WRITE, chunkOffsetHeaderSize + bitsetSize,
            rawDataSize, file, this.getClass().getSimpleName() + " rawDataBuffer");

    chunkOffsetsWriter = new FixedByteSingleValueMultiColWriter(chunkOffsetsBuffer, numDocs, NUM_COLS_IN_HEADER,
            new int[] { SIZE_OF_INT });

    customBitSet = CustomBitSet.withByteBuffer(bitsetSize, bitsetBuffer);
    rawDataWriter = new FixedBitSingleValueWriter(rawDataBuffer, totalNumValues, columnSizeInBits);

}

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From source file:io.hops.erasure_coding.BaseEncodingManager.java

static long numStripes(long numBlocks, int stripeSize) {
    return (long) Math.ceil(numBlocks * 1.0 / stripeSize);
}

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From source file:etomica.potential.EwaldSummation.java

public EwaldSummation(IBox box, AtomLeafAgentManager<MyCharge> atomAgentManager, ISpace _space, double kCut,
        double rCutRealES) {

    this.box = box;
    this.atomAgentManager = atomAgentManager;
    this.space = _space;
    this.secondDerivative = space.makeTensor();
    this.tempTensorkk = space.makeTensor();
    this.kCut = kCut;

    moleculeList = box.getMoleculeList();
    numMolecules = moleculeList.getMoleculeCount();
    boxSize = new double[] { box.getBoundary().getBoxSize().getX(0), box.getBoundary().getBoxSize().getX(1),
            box.getBoundary().getBoxSize().getX(2) };
    volume = box.getBoundary().volume();
    Lxyz = space.makeVector();/*from  w w  w.j a  v  a  2  s .  co  m*/
    this.rCutRealES = rCutRealES;
    rCutSquared = rCutRealES * rCutRealES;
    nRealShells = new int[] { (int) Math.ceil(rCutRealES / boxSize[0] - 0.49999),
            (int) Math.ceil(rCutRealES / boxSize[1] - 0.49999),
            (int) Math.ceil(rCutRealES / boxSize[2] - 0.49999) };

    nKs = new int[] { (int) Math.ceil(boxSize[0] / 2.0 / Math.PI * kCut),
            (int) Math.ceil(boxSize[1] / 2.0 / Math.PI * kCut),
            (int) Math.ceil(boxSize[2] / 2.0 / Math.PI * kCut) };

    double s = Math.sqrt(rCutRealES * kCut / 2);

    alpha = s / rCutRealES; //=0.2406189232882774  //nX=1

    int nAtoms = box.getLeafList().getAtomCount();
    double Q2 = 0;
    for (int i = 0; i < nAtoms; i++) {//H
        IAtom atom = box.getLeafList().getAtom(i);
        double charge = atomAgentManager.getAgent(atom).charge;
        Q2 += charge * charge;
    }
    Q2 /= numMolecules;

    alpha2 = alpha * alpha;
    alpha3 = alpha * alpha2;

    basis = new double[] { 2 * Math.PI / boxSize[0], 2 * Math.PI / boxSize[1], 2 * Math.PI / boxSize[2] };
    gradient = new IVectorMutable[0];
    sinkrj = new double[0];
    coskrj = new double[0];
    rAB = space.makeVector();
    drTmp = space.makeVector();
    kVector = space.makeVector();
}

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From source file:statistic.ca.gui.DiagramContainer.java

public void remove(JPanel diagramToRemove) {
    JPanel toRemove = null;/*  www .  j a va2 s .  c  o  m*/
    DiagramTupel tupelToRemove = null;
    for (DiagramTupel dt : diagramList) {
        if (dt.getDiagram().equals(diagramToRemove)) {
            toRemove = dt.getDiagram();
            tupelToRemove = dt;
        }
    }
    if (toRemove == null) {
        return;
    }
    diagramList.remove(tupelToRemove);
    diagramMapping.clear();
    for (DiagramTupel dia : diagramList) {
        diagramMapping.put(dia.getTitle(), diagramList.indexOf(dia));
    }
    super.removeAll();

    setLayout(new GridLayout((int) (Math.ceil((double) diagramList.size() / 2)), 2));

    for (DiagramTupel d : diagramList) {
        add(d.getDiagram());
        (d.getDiagram()).addMouseListener(parent.new diagramClick());
    }
    repaint();
    validate();
}

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From source file:com.cerema.cloud2.lib.resources.files.ChunkedUploadRemoteFileOperation.java

@Override
protected int uploadFile(OwnCloudClient client) throws IOException {
    int status = -1;

    FileChannel channel = null;//  w w w.  j  a v  a2  s. co m
    RandomAccessFile raf = null;
    try {
        File file = new File(mLocalPath);
        raf = new RandomAccessFile(file, "r");
        channel = raf.getChannel();
        mEntity = new ChunkFromFileChannelRequestEntity(channel, mMimeType, CHUNK_SIZE, file);
        synchronized (mDataTransferListeners) {
            ((ProgressiveDataTransferer) mEntity).addDatatransferProgressListeners(mDataTransferListeners);
        }

        long offset = 0;
        String uriPrefix = client.getWebdavUri() + WebdavUtils.encodePath(mRemotePath) + "-chunking-"
                + Math.abs((new Random()).nextInt(9000) + 1000) + "-";
        long totalLength = file.length();
        long chunkCount = (long) Math.ceil((double) totalLength / CHUNK_SIZE);
        String chunkSizeStr = String.valueOf(CHUNK_SIZE);
        String totalLengthStr = String.valueOf(file.length());
        for (int chunkIndex = 0; chunkIndex < chunkCount; chunkIndex++, offset += CHUNK_SIZE) {
            if (chunkIndex == chunkCount - 1) {
                chunkSizeStr = String.valueOf(CHUNK_SIZE * chunkCount - totalLength);
            }
            if (mPutMethod != null) {
                mPutMethod.releaseConnection(); // let the connection available
                                                // for other methods
            }
            mPutMethod = new PutMethod(uriPrefix + chunkCount + "-" + chunkIndex);
            if (mRequiredEtag != null && mRequiredEtag.length() > 0) {
                mPutMethod.addRequestHeader(IF_MATCH_HEADER, "\"" + mRequiredEtag + "\"");
            }
            mPutMethod.addRequestHeader(OC_CHUNKED_HEADER, OC_CHUNKED_HEADER);
            mPutMethod.addRequestHeader(OC_CHUNK_SIZE_HEADER, chunkSizeStr);
            mPutMethod.addRequestHeader(OC_TOTAL_LENGTH_HEADER, totalLengthStr);
            ((ChunkFromFileChannelRequestEntity) mEntity).setOffset(offset);
            mPutMethod.setRequestEntity(mEntity);
            if (mCancellationRequested.get()) {
                mPutMethod.abort();
                // next method will throw an exception
            }
            status = client.executeMethod(mPutMethod);

            if (status == 400) {
                InvalidCharacterExceptionParser xmlParser = new InvalidCharacterExceptionParser();
                InputStream is = new ByteArrayInputStream(mPutMethod.getResponseBodyAsString().getBytes());
                try {
                    mForbiddenCharsInServer = xmlParser.parseXMLResponse(is);

                } catch (Exception e) {
                    mForbiddenCharsInServer = false;
                    Log_OC.e(TAG, "Exception reading exception from server", e);
                }
            }

            client.exhaustResponse(mPutMethod.getResponseBodyAsStream());
            Log_OC.d(TAG, "Upload of " + mLocalPath + " to " + mRemotePath + ", chunk index " + chunkIndex
                    + ", count " + chunkCount + ", HTTP result status " + status);

            if (!isSuccess(status))
                break;
        }

    } finally {
        if (channel != null)
            channel.close();
        if (raf != null)
            raf.close();
        if (mPutMethod != null)
            mPutMethod.releaseConnection(); // let the connection available for other methods
    }
    return status;
}

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From source file:com.sketchy.utils.image.SketchyImage.java

public int getWidthInMillimeters() {
    return (int) Math.ceil(image.getWidth() / getDotsPerMillimeterWidth());
}

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From source file:ch.unifr.pai.twice.widgets.mpProxyScreenShot.server.ReadOnlyPresentation.java

@Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
    PrintWriter w = resp.getWriter();
    for (String uuid : uuidToScreenshot.keySet()) {
        Screenshot s = uuidToScreenshot.get(uuid);

        w.print("<div style=\"width:");
        w.print((int) Math.ceil((double) s.width * scaleFactor));
        w.print("px; height:");
        w.print((int) Math.ceil((double) s.height * scaleFactor));
        w.print("px; overflow:hidden; display:inline-block;\">");
        w.print("<iframe ");
        w.print("name=\"");
        w.print(uuid);/*from  ww  w  .ja  v a2  s .  c  o  m*/
        w.print("\" style=\"width:100%; height:100%;\" src=\"");
        w.print(SimpleHttpUrlConnectionServletFilter.getServletPath(req));
        w.print("/" + s.url + "/");
        w.print("miceScreenShot?uuid=" + uuid);
        w.print("\"></iframe></div>");
    }
    w.flush();
    w.close();
    return;
}

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From source file:fr.zcraft.zbanque.structure.items_groups.ItemsGroup.java

public Pair<Long, Map<BlockType, Long>> getAmounts(final Collection<Bank> banks) {
    Long amount = 0l;//w ww  .  j  a va  2s.c  o m
    Map<BlockType, Long> detail = new HashMap<>();

    for (Bank bank : banks) {
        for (Map.Entry<BlockType, Long> entry : bank.getContent().entrySet()) {
            final BlockType type = entry.getKey();
            if (relativeAmounts.containsKey(type)) {
                amount += (long) Math.ceil(relativeAmounts.get(type) * entry.getValue());
                detail.put(type, entry.getValue() + (detail.containsKey(type) ? detail.get(type) : 0));
            }
        }
    }

    return new Pair<>(amount, detail);
}

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From source file:Main.java

/**
 * Helper that does the work of the above functions. Gets the rectangular
 * position of a Bitmap if it were placed inside a View with scale type set
 * to {@link ImageView#ScaleType #CENTER_INSIDE}.
 * /*  www.j a va  2  s .  co  m*/
 * @param bitmapWidth the Bitmap's width
 * @param bitmapHeight the Bitmap's height
 * @param viewWidth the parent View's width
 * @param viewHeight the parent View's height
 * @return the rectangular position of the Bitmap
 */
private static Rect getBitmapRectCenterInsideHelper(int bitmapWidth, int bitmapHeight, int viewWidth,
        int viewHeight) {
    double resultWidth;
    double resultHeight;
    int resultX;
    int resultY;

    double viewToBitmapWidthRatio = Double.POSITIVE_INFINITY;
    double viewToBitmapHeightRatio = Double.POSITIVE_INFINITY;

    // Checks if either width or height needs to be fixed
    if (viewWidth < bitmapWidth) {
        viewToBitmapWidthRatio = (double) viewWidth / (double) bitmapWidth;
    }
    if (viewHeight < bitmapHeight) {
        viewToBitmapHeightRatio = (double) viewHeight / (double) bitmapHeight;
    }

    // If either needs to be fixed, choose smallest ratio and calculate from
    // there
    if (viewToBitmapWidthRatio != Double.POSITIVE_INFINITY
            || viewToBitmapHeightRatio != Double.POSITIVE_INFINITY) {
        if (viewToBitmapWidthRatio <= viewToBitmapHeightRatio) {
            resultWidth = viewWidth;
            resultHeight = (bitmapHeight * resultWidth / bitmapWidth);
        } else {
            resultHeight = viewHeight;
            resultWidth = (bitmapWidth * resultHeight / bitmapHeight);
        }
    }
    // Otherwise, the picture is within frame layout bounds. Desired width
    // is simply picture size
    else {
        resultHeight = bitmapHeight;
        resultWidth = bitmapWidth;
    }

    // Calculate the position of the bitmap inside the ImageView.
    if (resultWidth == viewWidth) {
        resultX = 0;
        resultY = (int) Math.round((viewHeight - resultHeight) / 2);
    } else if (resultHeight == viewHeight) {
        resultX = (int) Math.round((viewWidth - resultWidth) / 2);
        resultY = 0;
    } else {
        resultX = (int) Math.round((viewWidth - resultWidth) / 2);
        resultY = (int) Math.round((viewHeight - resultHeight) / 2);
    }

    final Rect result = new Rect(resultX, resultY, resultX + (int) Math.ceil(resultWidth),
            resultY + (int) Math.ceil(resultHeight));

    return result;
}

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From source file:com.davidsoergel.trees.AbstractRootedPhylogeny.java

/**
 * {@inheritDoc}//  w w  w.j  a  v  a 2  s .  co m
 */
@NotNull
public T commonAncestor(Collection<T> knownMergeIds, double proportion) throws NoSuchNodeException {
    Set<List<PhylogenyNode<T>>> theDisposableAncestorLists = new HashSet<List<PhylogenyNode<T>>>();
    for (T id : knownMergeIds) {
        try {
            PhylogenyNode<T> node = getNode(id);
            theDisposableAncestorLists.add(new ArrayList<PhylogenyNode<T>>(node.getAncestorPath()));
        } catch (NoSuchNodeException e) {
            logger.debug("Node not found with id " + id + " when looking for common ancestor; ignoring");
        }
    }

    int numberThatMustAgree = (int) Math.ceil(theDisposableAncestorLists.size() * proportion);

    PhylogenyNode<T> commonAncestor = null;

    try {
        while (true) {
            commonAncestor = DSCollectionUtils.getDominantFirstElement(theDisposableAncestorLists,
                    numberThatMustAgree); // throws NoSuchElementException
            theDisposableAncestorLists = DSCollectionUtils
                    .filterByAndRemoveFirstElement(theDisposableAncestorLists, commonAncestor);
        }
    } catch (NoSuchElementException e) {
        // good, broke the loop, leaving commonAncestor and theAncestorLists in the most recent valid state
    }

    /*
    while (DSCollectionUtils.allFirstElementsEqual(theAncestorLists))
       {
       commonAncestor = DSCollectionUtils.removeAllFirstElements(theAncestorLists);
       }
    */

    if (commonAncestor == null) {
        throw new NoSuchNodeException("Nodes have no common ancestor");
        //return null;
    }

    return commonAncestor.getPayload();
}

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