Examples with DoubleBuffer java.nio.DoubleBuffer used on opensource projects

Example 26 with DoubleBuffer

use of java.nio.DoubleBuffer in project angel by Tencent.

the class Min method doProcessRow.

@Override
protected double doProcessRow(ServerDenseDoubleRow row) {
    double min = Double.POSITIVE_INFINITY;
    DoubleBuffer data = row.getData();
    int size = row.size();
    for (int i = 0; i < size; i++) {
        min = Math.min(min, data.get(i));
    }
    return min;
}

Example 27 with DoubleBuffer

use of java.nio.DoubleBuffer in project angel by Tencent.

the class Nnz method doProcessRow.

@Override
protected double doProcessRow(ServerDenseDoubleRow row) {
    int nnz = 0;
    DoubleBuffer data = row.getData();
    int size = row.size();
    for (int i = 0; i < size; i++) {
        if (data.get(i) != 0)
            nnz++;
    }
    return nnz;
}

Example 28 with DoubleBuffer

use of java.nio.DoubleBuffer in project angel by Tencent.

the class Abs method doUpdate.

@Override
protected void doUpdate(ServerDenseDoubleRow[] rows) {
    try {
        rows[1].getLock().writeLock().lock();
        DoubleBuffer from = rows[0].getData();
        DoubleBuffer to = rows[1].getData();
        int size = rows[0].size();
        for (int i = 0; i < size; i++) {
            to.put(i, Math.abs(from.get(i)));
        }
    } finally {
        rows[1].getLock().writeLock().unlock();
    }
}

Example 29 with DoubleBuffer

use of java.nio.DoubleBuffer in project angel by Tencent.

the class Add method doUpdate.

@Override
protected void doUpdate(ServerDenseDoubleRow[] rows) {
    try {
        rows[2].getLock().writeLock().lock();
        DoubleBuffer from1 = rows[0].getData();
        DoubleBuffer from2 = rows[1].getData();
        DoubleBuffer to = rows[2].getData();
        int size = rows[0].size();
        for (int i = 0; i < size; i++) {
            to.put(i, from1.get(i) + from2.get(i));
        }
    } finally {
        rows[2].getLock().writeLock().unlock();
    }
}

Example 30 with DoubleBuffer

use of java.nio.DoubleBuffer in project angel by Tencent.

the class AddS method doUpdate.

@Override
protected void doUpdate(ServerDenseDoubleRow[] rows, double[] scalars) {
    try {
        rows[1].getLock().writeLock().lock();
        DoubleBuffer from = rows[0].getData();
        DoubleBuffer to = rows[1].getData();
        int size = rows[0].size();
        for (int i = 0; i < size; i++) {
            to.put(i, from.get(i) + scalars[0]);
        }
    } finally {
        rows[1].getLock().writeLock().unlock();
    }
}