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 getTimeDistanceInMinutes(long time) {
    long timeDistance = currentDate().getTime() - time;
    return Math.round((Math.abs(timeDistance) / 1000) / 60);
}

From source file:Main.java

public static long getCountDay(String date1) {
    String date2 = getDate();/*from  ww  w .  j  a v a 2s.c  om*/
    long day = getQuot(date1, date2);
    return Math.abs(day);
}

From source file:Main.java

public static Bitmap subtract(Bitmap bitmap1, Bitmap bitmap2) {
    int width = bitmap1.getWidth();
    int height = bitmap1.getHeight();
    Bitmap grayBitmap1 = toGrayScale(bitmap1);
    Bitmap grayBitmap2 = toGrayScale(bitmap2);
    Bitmap result = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
    for (int x = 0; x < width; x++)
        for (int y = 0; y < height; y++) {
            int value1 = Color.blue(grayBitmap1.getPixel(x, y));
            int value2 = Color.blue(grayBitmap2.getPixel(x, y));
            int resultValue = Math.abs(value2 - value1);
            //                resultValue = (resultValue>255/3)?resultValue:0;
            result.setPixel(x, y, Color.rgb(resultValue, resultValue, resultValue));
        }//from   w  w w  .  j  a va 2 s .  co m
    //        grayBitmap1.recycle();
    //        grayBitmap2.recycle();
    return result;
}

From source file:Main.java

public static double tile2lat(int y, int aZoom) {

    final double MerkElipsK = 0.0000001;
    final long sradiusa = 6378137;
    final long sradiusb = 6356752;
    final double FExct = (double) Math.sqrt(sradiusa * sradiusa - sradiusb * sradiusb) / sradiusa;
    final int TilesAtZoom = 1 << aZoom;
    double result = (y - TilesAtZoom / 2) / -(TilesAtZoom / (2 * Math.PI));
    result = (2 * Math.atan(Math.exp(result)) - Math.PI / 2) * 180 / Math.PI;
    double Zu = result / (180 / Math.PI);
    double yy = ((y) - TilesAtZoom / 2);

    double Zum1 = Zu;
    Zu = Math.asin(1 - ((1 + Math.sin(Zum1)) * Math.pow(1 - FExct * Math.sin(Zum1), FExct))
            / (Math.exp((2 * yy) / -(TilesAtZoom / (2 * Math.PI)))
                    * Math.pow(1 + FExct * Math.sin(Zum1), FExct)));
    while (Math.abs(Zum1 - Zu) >= MerkElipsK) {
        Zum1 = Zu;/*from  w  ww .j a  v a2 s. c o m*/
        Zu = Math.asin(1 - ((1 + Math.sin(Zum1)) * Math.pow(1 - FExct * Math.sin(Zum1), FExct))
                / (Math.exp((2 * yy) / -(TilesAtZoom / (2 * Math.PI)))
                        * Math.pow(1 + FExct * Math.sin(Zum1), FExct)));
    }

    result = Zu * 180 / Math.PI;

    return result;

}

From source file:dtu.ds.warnme.utils.RandomUtils.java

public static boolean compareFloat(float a, float b, int precision) {
    return Math.abs(a - b) <= Math.pow(10, -precision);
}

From source file:Main.java

/**
 * Tests whether the two decimal numbers are equal with a tolerance of 0.01.
 *
 * @param d1 the first value.//from  ww  w .  ja va2  s . c  o m
 * @param d2 the second value.
 * @return true if the two decimal numbers are equal with a tolerance of 0.01.
 */
public static boolean isEqual(double d1, double d2) {
    return Math.abs(d1 - d2) < TOLERANCE;
}

From source file:Main.java

/**
 * @return the size written, in bytes. Always 3 bytes.
 *//*w w w  .  j  av a 2 s .  com*/
static int writeSInt24ToStream(final OutputStream destination, final int value) throws IOException {
    final int absValue = Math.abs(value);
    destination.write((byte) (((value < 0 ? 0x80 : 0) | (absValue >> 16)) & 0xFF));
    destination.write((byte) ((absValue >> 8) & 0xFF));
    destination.write((byte) (absValue & 0xFF));
    return 3;
}

From source file:Main.java

private static String getDayOfWeek(String format, int calendarField) {
    String strDate = null;/*from  w  ww.  j av a2  s . c  o m*/
    try {
        Calendar c = new GregorianCalendar();
        SimpleDateFormat mSimpleDateFormat = new SimpleDateFormat(format, Locale.CHINA);
        int week = c.get(Calendar.DAY_OF_WEEK);
        if (week == calendarField) {
            strDate = mSimpleDateFormat.format(c.getTime());
        } else {
            int offectDay = calendarField - week;
            if (calendarField == Calendar.SUNDAY) {
                offectDay = 7 - Math.abs(offectDay);
            }
            c.add(Calendar.DATE, offectDay);
            strDate = mSimpleDateFormat.format(c.getTime());
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
    return strDate;
}

From source file:Main.java

public static float easeInOut(float n) {
    double q = 0.48f - n / DURATION / 1.04f, Q = Math.sqrt(0.1734f + q * q), x = Q - q,
            X = Math.pow(Math.abs(x), 1 / 3) * (x < 0 ? -1 : 1), y = -Q - q,
            Y = Math.pow(Math.abs(y), 1 / 3) * (y < 0 ? -1 : 1), t = X + Y + 0.5f;
    return (float) (DOMAIN * ((1 - t) * 3 * t * t + t * t * t) + START);
}

From source file:Main.java

public static int[] generateCodePointSet(final int codePointSetSize, final Random random) {
    final int[] codePointSet = new int[codePointSetSize];
    for (int i = codePointSet.length - 1; i >= 0;) {
        final int r = Math.abs(random.nextInt());
        if (r < 0)
            continue;
        // Don't insert 0~0x20, but insert any other code point.
        // Code points are in the range 0~0x10FFFF.
        final int candidateCodePoint = 0x20 + r % (Character.MAX_CODE_POINT - 0x20);
        // Code points between MIN_ and MAX_SURROGATE are not valid on their own.
        if (candidateCodePoint >= Character.MIN_SURROGATE && candidateCodePoint <= Character.MAX_SURROGATE)
            continue;
        codePointSet[i] = candidateCodePoint;
        --i;/*w  w  w . j a  v  a  2  s .  com*/
    }
    return codePointSet;
}