Example usage for java.lang Math abs

Introduction

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

Prototype

@HotSpotIntrinsicCandidate
public static double abs(double a)

Source Link

Document

Returns the absolute value of a double value.

Usage

From source file:Main.java

private static int[] adaptPreviewFps(int expectedFps, List<int[]> fpsRanges) {
    expectedFps *= 1000;//from w  w w.j av  a2s  . c  o  m
    int[] closestRange = fpsRanges.get(0);
    int measure = Math.abs(closestRange[0] - expectedFps) + Math.abs(closestRange[1] - expectedFps);
    for (int[] range : fpsRanges) {
        if (range[0] <= expectedFps && range[1] >= expectedFps) {
            int curMeasure = Math.abs(range[0] - expectedFps) + Math.abs(range[1] - expectedFps);
            if (curMeasure < measure) {
                closestRange = range;
                measure = curMeasure;
            }
        }
    }
    return closestRange;
}

From source file:Main.java

public static String getRandomStr(int len) {
    Random rd = new Random();
    String retStr = "";
    do {// ww w. j av a2 s  .co m
        int rdGet1 = Math.abs(rd.nextInt()) % 10;

        int rdGet2 = Math.abs(rd.nextInt()) % 26 + 65;
        retStr = retStr + rdGet1 + (char) rdGet2;
    } while (retStr.length() < len);

    return retStr;
}

From source file:Main.java

public static boolean move(float[] values, float[] preAccelerometerValues) {
    float difx = Math.abs(values[SensorManager.DATA_X]);
    float dify = Math.abs(values[SensorManager.DATA_Y]);
    float difz = Math.abs(values[SensorManager.DATA_Z]);
    Log.e("log.e val = ", " " + difx + " " + dify + " " + difz);

    float difx1 = Math.abs(preAccelerometerValues[SensorManager.DATA_X]);
    float dify1 = Math.abs(preAccelerometerValues[SensorManager.DATA_Y]);
    float difz1 = Math.abs(preAccelerometerValues[SensorManager.DATA_Z]);
    Log.e("log.e pre = ", " " + difx1 + " " + dify1 + " " + difz1);

    float difx2 = Math.abs(values[SensorManager.DATA_X] - preAccelerometerValues[SensorManager.DATA_X]);
    float dify2 = Math.abs(values[SensorManager.DATA_Y] - preAccelerometerValues[SensorManager.DATA_Y]);
    float difz2 = Math.abs(values[SensorManager.DATA_Z] - preAccelerometerValues[SensorManager.DATA_Z]);
    Log.e("log.e  dif = ", " " + difx2 + " " + dify2 + " " + difz2);

    if (checkMove(values[SensorManager.DATA_X], preAccelerometerValues[SensorManager.DATA_X])
            || checkMove(values[SensorManager.DATA_Y], preAccelerometerValues[SensorManager.DATA_Y])
            || checkMove(values[SensorManager.DATA_Z], preAccelerometerValues[SensorManager.DATA_Z])) {
        return true;
    }//w  w w .j  ava2s. c  o  m
    return false;
}

From source file:Main.java

/**
 * use and random value,maybe this can provide good experince
 *
 * @param min//from   ww  w.  j  ava 2 s  .c  o m
 * @param max
 * @return
 */
public static int getRandom(int min, int max) {
    Random random = new Random();
    return random.nextInt(Math.abs(max - min)) + min;
}

From source file:Main.java

/**
 * get a random number//from  ww  w  .j  av a 2  s . c o m
 * @param size e.g. 3: {0,1,2}
 * @param offset e.g. 1:{1,2,3}, -1:{-1,0,1}
 * @return random + offset
 */
public static int getRandom(int size, int offset) {
    int random = ((int) System.currentTimeMillis() % size);
    random = Math.abs(random);
    random += offset;
    return random;
}

From source file:Main.java

public static double convertKMToMiles(String kilometers) {

    DecimalFormat decimalFormat = new DecimalFormat("#");
    int km = Integer.parseInt(kilometers);
    double miles = 0.621 * km;

    decimalFormat.format(miles);//from   w w  w . j  av  a 2 s .c o m
    return Math.abs(miles);
}

From source file:Main.java

/**
 * calculate difference form two dates Note: both dates are in same format.
 *
 * @param mDate1 date 1/* w w w  .  j av a 2  s  . co  m*/
 * @param mDate2 date 2
 * @return date difference in long
 */
public static long calculateDays(Date mDate1, Date mDate2) {
    return Math.abs((mDate1.getTime() - mDate2.getTime()) / (24 * 60 * 60 * 1000) + 1);
}

From source file:Main.java

public static byte[] fromUnsigned(int[] ubytes) {
    if (ubytes == null)
        return null;

    byte[] res = new byte[ubytes.length];
    int ubyte = 0;

    for (int i = 0; i < ubytes.length; i++) {
        ubyte = Math.abs(ubytes[i]) % 256;
        res[i] = (byte) (ubyte >= 128 ? ubyte - 256 : ubyte);
    }//from  w  w w.  ja  va  2 s  .c  om

    return res;
}

From source file:Main.java

public static <O> O getRandom(final Collection<O> pObjects) {
    if (pObjects != null && !pObjects.isEmpty()) {
        int r = Math.abs(random.nextInt() % pObjects.size());
        List<O> objects = !(pObjects instanceof List) ? new ArrayList<O>(pObjects) : (List<O>) pObjects;

        return objects.get(r);
    }//ww  w  . j av  a  2  s.  c om
    return null;
}

From source file:Main.java

public static float distanceBetween2Points(float vectorX0, float vectorY0, float vectorXP, float vectorYP) {
    float x = Math.abs(vectorXP - vectorX0);
    float y = Math.abs(vectorYP - vectorY0);
    return (float) Math.sqrt((x * x) + (y * y));
}