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

public static boolean isNearRatio16_9(int width, int height) {
    if (width < height) {
        int tmp = width;
        width = height;/*from   w w  w.  j av a 2s  . co m*/
        height = tmp;
    }
    if (Math.abs((double) width / height - 4.0 / 3.0) > Math.abs((double) width / height - 16.0 / 9.0)) {
        return true;
    }
    return false;
}

From source file:Main.java

/**
 * Method checks if two float numbers are similar.
 *//*from   w  ww.j  a  v  a2  s.  c  om*/
public static boolean almostEqual(float a, float b, float absoluteDiff, float relativeDiff) {
    float diff = Math.abs(a - b);
    if (diff <= absoluteDiff) {
        return true;
    }

    a = Math.abs(a);
    b = Math.abs(b);
    float largest = (a > b) ? a : b;

    if (diff <= largest * relativeDiff) {
        return true;
    }

    return false;
}

From source file:Main.java

public static double transformLat(double x, double y) {
    double ret = -100.0 + 2.0 * x + 3.0 * y + 0.2 * y * y + 0.1 * x * y + 0.2 * Math.sqrt(Math.abs(x));
    ret += (20.0 * Math.sin(6.0 * x * pi) + 20.0 * Math.sin(2.0 * x * pi)) * 2.0 / 3.0;
    ret += (20.0 * Math.sin(y * pi) + 40.0 * Math.sin(y / 3.0 * pi)) * 2.0 / 3.0;
    ret += (160.0 * Math.sin(y / 12.0 * pi) + 320 * Math.sin(y * pi / 30.0)) * 2.0 / 3.0;
    return ret;/* w  w  w  .  j a  v  a 2s .  c om*/
}

From source file:Main.java

static float nextFloat(float a, float b) {
    return Math.min(a, b) + random.nextFloat() * Math.abs(a - b);
}

From source file:Main.java

/**
 * Calculate the angle to the target location from local.
 *///w  w w. j av  a 2s  . c o  m
private static double getAngle(final double startheight, final double endheight, final float poslenght) {
    double radian = Math.atan(Math.abs((endheight - startheight)) / poslenght);
    double degree = Math.toDegrees(radian);
    if (startheight > endheight) {
        return -degree;
    }
    return degree;
}

From source file:Main.java

/**
 * Calculate the angle to the target location from local.
 *//*from  w w w . j a  v  a 2 s  . c  o m*/
private static double getAngle(final double startheight, final double endheight, final float poslength) {
    double radian = Math.atan(Math.abs((endheight - startheight)) / poslength);
    double degree = Math.toDegrees(radian);
    if (startheight > endheight) {
        return -degree;
    }
    return degree;
}

From source file:Main.java

public static final int getRandom(int _min, int _max) {
    if (_min < 0 && _max < 0) {
        return randomGenerator.nextInt(Math.abs(_min - _max)) + _min;
    } else if (_min < 0) {
        return randomGenerator.nextInt(Math.abs(_min) + _max) + _min;
    } else {//from www.  j  a  va 2s  .  c  om
        return randomGenerator.nextInt(_max - _min) + _min;
    }
}

From source file:Main.java

public static String getSigFig(double value, int n) {
    String result = String.format("%.10f", value);
    int k = (int) (Math.log(Math.abs(value)) / Math.log(10));
    if ((k + 1) >= n) {
        // Assume value > 0
        result = result.substring(0, n);
    } else {/*from   w ww .  j a  v  a  2 s .  c  o  m*/
        if (value < 0) {
            n = n + 1;
        }
        if (0 < Math.abs(value) && Math.abs(value) < 1) {
            n = n + 1;
        }
        if (value != 0) {
            result = result.substring(0, n + 1);
        } else {
            n = n + 2;
            result = "0.0";
        }
        // Add trailing zeros
        while (result.length() < n) {
            result = result + "0";
        }
    }
    return result;
}

From source file:Main.java

public static String getRandomFileName() {
    String _df = android.text.format.DateFormat.format("MMddyyyyhhmmss", new java.util.Date()).toString();
    Random r = new Random();
    int random = Math.abs(r.nextInt() % 100);
    return String.format("%d%s.jpg", random, _df);
}

From source file:Main.java

public static float calculateDuration(float startX, float startY, float endX, float endY, float maxDistance,
        int minDuaration, int maxDurationForFling) {
    float duation = Math.min(
            Math.max(Math.abs((endY - startY)), Math.abs((endX - startX))) / maxDistance * maxDurationForFling,
            maxDurationForFling);/* ww  w .  ja  v  a 2 s.co  m*/
    if (duation < minDuaration) {
        return minDuaration;
    }
    if (duation > maxDurationForFling) {
        return maxDurationForFling;
    }
    return duation;
}