Merge "[MS10.1] Move multiplySafeByRational to NetworkStatsUtils" am: 6ff62406

        return true;

    }

    /**

     * Safely multiple a value by a rational.

     * <p>

     * Internally it uses integer-based math whenever possible, but switches

     * over to double-based math if values would overflow.

     * @hide

     */

    public static long multiplySafeByRational(long value, long num, long den) {

        if (den == 0) {

            throw new ArithmeticException("Invalid Denominator");

        }

        long x = value;

        long y = num;

        // Logic shamelessly borrowed from Math.multiplyExact()

        long r = x * y;

        long ax = Math.abs(x);

        long ay = Math.abs(y);

        if (((ax | ay) >>> 31 != 0)) {

            // Some bits greater than 2^31 that might cause overflow

            // Check the result using the divide operator

            // and check for the special case of Long.MIN_VALUE * -1

            if (((y != 0) && (r / y != x))

                    || (x == Long.MIN_VALUE && y == -1)) {

                // Use double math to avoid overflowing

                return (long) (((double) num / den) * value);

            }

        }

        return r / den;

    }

}

package android.net;

import static com.android.internal.net.NetworkUtilsInternal.multiplySafeByRational;

import static com.android.net.module.util.NetworkStatsUtils.multiplySafeByRational;

import android.annotation.IntDef;

import android.annotation.NonNull;

import static android.net.TrafficStats.UID_REMOVED;

import static android.text.format.DateUtils.WEEK_IN_MILLIS;

import static com.android.internal.net.NetworkUtilsInternal.multiplySafeByRational;

import static com.android.net.module.util.NetworkStatsUtils.multiplySafeByRational;

import android.os.Binder;

import android.service.NetworkStatsCollectionKeyProto;

import static android.net.NetworkStatsHistory.ParcelUtils.writeLongArray;

import static android.text.format.DateUtils.SECOND_IN_MILLIS;

import static com.android.internal.net.NetworkUtilsInternal.multiplySafeByRational;

import static com.android.internal.util.ArrayUtils.total;

import static com.android.net.module.util.NetworkStatsUtils.multiplySafeByRational;

import android.compat.annotation.UnsupportedAppUsage;

import android.os.Build;