* of the returned array is that of the specified array. If the collection fits in the specified
   * array, it is returned therein. Otherwise, a new array is allocated with the runtime type of the
   * specified array and the size of the specified collection.
   *
   * <p>If the collection fits in the specified array with room to spare (i.e., the array has more

   * of the returned array is that of the specified array. If the collection fits in the specified
   * array, it is returned therein. Otherwise, a new array is allocated with the runtime type of the
   * specified array and the size of the specified collection.
   *
   * <p>If the collection fits in the specified array with room to spare (i.e., the array has more

  public static boolean isPowerOfTwo(long x) {
    return x > 0 & (x & (x - 1)) == 0;
  }

  /**
   * Returns 1 if {@code x < y} as unsigned longs, and 0 otherwise. Assumes that x - y fits into a
   * signed long. The implementation is branch-free, and benchmarks suggest it is measurably faster
   * than the straightforward ternary expression.
   */
  @VisibleForTesting

				"application/emma+xml",
				"application/epp+xml",
				"application/epub+zip",
				"application/eshop",
				"application/example",
				"application/fastinfoset",
				"application/fastsoap",
				"application/fits",
				"application/font-tdpfr",
				"application/h224",
				"application/http",
				"application/hyperstudio",
				"application/ibe-key-request+xml",
				"application/ibe-pkg-reply+xml",

	i := copy(b2, b)
	return b2[:i]
}

// WriteTo writes data to w until the buffer is drained or an error occurs.
// The return value n is the number of bytes written; it always fits into an
// int, but it is int64 to match the [io.WriterTo] interface. Any error
// encountered during the write is also returned.
func (b *Buffer) WriteTo(w io.Writer) (n int64, err error) {
	b.lastRead = opInvalid

      <match value="SIMPLE  =                T" type="string" offset="0"/>
    </magic>
    <glob pattern="*.fits"/>
    <glob pattern="*.fit"/>
    <glob pattern="*.fts"/>
  </mime-type>

  <mime-type type="application/font-tdpfr">
    <glob pattern="*.pfr"/>
  </mime-type>
  <mime-type type="application/h224"/>
  <mime-type type="application/http"/>

	MOVW	$0, (R1)  // 3f0000b9
	MOVWU	$0, (R1)  // 3f0000b9
	MOVH	$0, (R1)  // 3f000079
	MOVHU	$0, (R1)  // 3f000079
	MOVB	$0, (R1)  // 3f000039
	MOVBU	$0, (R1)  // 3f000039

// small offset fits into instructions
	MOVB	R1, 1(R2) // 41040039
	MOVH	R1, 1(R2) // 41100078
	MOVH	R1, 2(R2) // 41040079
	MOVW	R1, 1(R2) // 411000b8
	MOVW	R1, 4(R2) // 410400b9
	MOVD	R1, 1(R2) // 411000f8

errors.New("edwards25519: invalid field element input size") } // Bits 0:51 (bytes 0:8, bits 0:64, shift 0, mask 51). v.l0 = byteorder.LEUint64(x[0:8]) v.l0 &= maskLow51Bits // Bits 51:102 (bytes 6:14, bits 48:112, shift 3, mask 51). v.l1 = byteorder.LEUint64(x[6:14]) >> 3 v.l1 &= maskLow51Bits // Bits 102:153 (bytes 12:20, bits 96:160, shift 6, mask 51). v.l2 = byteorder.LEUint64(x[12:20]) >> 6 v.l2 &= maskLow51Bits // Bits 153:204 (bytes 19:27, bits 152:216, shift 1, mask 51). v.l3 = byteorder.LEUint64(x[19:27])...

all types in its type set must have the same underlying slice type <code>[]E</code>.
</p>

<p>
If the capacity of <code>s</code> is not large enough to fit the additional
values, <code>append</code> <a href="#Allocation">allocates</a> a new, sufficiently large underlying
array that fits both the existing slice elements and the additional values.

Cryptographic Module operates in FIPS 140-3 mode.
The possible values are:
- "off": no special support for FIPS 140-3 mode. This is the default.
- "on": the Go Cryptographic Module operates in FIPS 140-3 mode.
- "only": like "on", but cryptographic algorithms not approved by
  FIPS 140-3 return an error or panic.
For more information, see [FIPS 140-3 Compliance](/doc/security/fips140).