nextPowerOfTwo - probable duplicate of roundUpToPowerOfTwo [1026146]

< > BotCompany Repo | #1026146 // nextPowerOfTwo - probable duplicate of roundUpToPowerOfTwo

JavaX fragment (include) [tags: use-pretranspiled]

Transpiled version (42L) is out of date.

/** Return the least power of two greater than or equal to the specified value.
  *
  * <p>Note that this function will return 1 when the argument is 0.
  *
  * @param x a long integer smaller than or equal to 2<sup>62</sup>.
  * @return the least power of two greater than or equal to the specified value.
  */
static long nextPowerOfTwo( long x ) {
  if ( x == 0 ) return 1;
  x--;
  x |= x >> 1;
  x |= x >> 2;
  x |= x >> 4;
  x |= x >> 8;
  x |= x >> 16;
  return ( x | x >> 32 ) + 1;
}

Travelled to 6 computer(s): bhatertpkbcr, mqqgnosmbjvj, pyentgdyhuwx, pzhvpgtvlbxg, tvejysmllsmz, vouqrxazstgt

Snippet ID:

#1026146

Snippet name:

nextPowerOfTwo - probable duplicate of roundUpToPowerOfTwo

Eternal ID of this version:

#1026146/3

Text MD5:

4fb27bb074a11cfc65eb6338d7264020

Author:

stefan

Category:

javax

Type:

JavaX fragment (include)

Public (visible to everyone):

Yes

Archived (hidden from active list):

Created/modified:

2020-08-02 21:02:00

Source code size:

507 bytes / 17 lines

Pitched / IR pitched:

No / No

Views / Downloads:

167 / 251

Version history:

2 change(s)

Referenced in:

[show references]

1	/** Return the least power of two greater than or equal to the specified value.
2	*
3	* <p>Note that this function will return 1 when the argument is 0.
4	*
5	* @param x a long integer smaller than or equal to 2<sup>62</sup>.
6	* @return the least power of two greater than or equal to the specified value.
7	*/
8	static long nextPowerOfTwo( long x ) {
9	if ( x == 0 ) return 1;
10	x--;
11	x \|= x >> 1;
12	x \|= x >> 2;
13	x \|= x >> 4;
14	x \|= x >> 8;
15	x \|= x >> 16;
16	return ( x \| x >> 32 ) + 1;
17	}