Java Bit Set setBitsInLong(long l, int n, int k, long v)

Description

Return a 'long' value with k bits starting at bit n assigned according to v I.e.

License

Open Source License

Parameter

Parameter	Description
l	is the long value to be manipulated
n	is the starting position
k	is the number of bits to set
v	is the value according to which the bits are set

Return

the resulting long value

Declaration

public static long setBitsInLong(long l, int n, int k, long v) 

Method Source Code

//package com.java2s;
/*//from   ww  w.  ja v  a2 s.  c om
 * Copyright Ericsson AB 2011-2014. All Rights Reserved.
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 * compliance with the License. You should have received a copy of the
 * License along with this software. If not, it can be
 * retrieved online at https://www.gnu.org/licenses/lgpl.html. Moreover
 * it could also be requested from Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
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public class Main {
    /**
     * Return a 'long' value with k bits starting at bit n assigned according to
     * v I.e. bits from n to n+k of 'i' are set according to 'v'. So if v=1010
     * and k=4, bits from n to n+4 of 'i' are set to 1010. Note that the
     * argument 'v' must be a long, since it is shifted by 'n', the maximum
     * value for which is 63.
     *
     * @param l is the long value to be manipulated
     * @param n is the starting position
     * @param k is the number of bits to set
     * @param v is the value according to which the bits are set
     * @return the resulting long value
     */
    public static long setBitsInLong(long l, int n, int k, long v) {
        long temp = ~(~0L << k);
        long temp2 = ~(temp << n);
        long temp3 = l & temp2;
        return temp3 | (v << n);
    }
}

Related

1. setBits(final byte value, final int bitMask, final boolean val)
2. setBits(int lowBit, int numBits)
3. setBits(int value, int bits)
4. setBits(long value, long bits)
5. setBitsFromLong(byte[] dst, long dstoff, long l, int off, int len)
6. setBitTo0(final long word, final int idx)
7. setBitValue(byte aByte, int bitIndex, int bitValue)
8. setBitValueAt(int destination, int value, int index)
9. setBitWidth(int bw)