*
   * @throws IllegalArgumentException if {@code x <= 0}
   * @since 20.0
   */
  public static long floorPowerOfTwo(long x) {
    checkPositive("x", x);

    // Long.highestOneBit was buggy on GWT.  We've fixed it, but I'm not certain when the fix will
    // be released.
    return 1L << ((Long.SIZE - 1) - Long.numberOfLeadingZeros(x));
  }

  /**
   * Returns {@code true} if {@code x} represents a power of two.
   *

   *
   * {@snippet :
   * CharMatcher.is('a').replaceFrom("yaha", "oo")
   * }
   *
   * ... returns {@code "yoohoo"}.
   *
   * <p><b>Note:</b> If the replacement is a fixed string with only one character, you are better
   * off calling {@link #replaceFrom(CharSequence, char)} directly.
   *
   * @param sequence the character sequence to replace matching characters in

   * can therefore be converted safely to integers (for whatever purpose) this function can be used
   * to handle IPv6 addresses as well until the application is suitably fixed.
   *
   * <p>NOTE: an IPv6 address coerced to an IPv4 address can only be used for such purposes as
   * rudimentary identification or indexing into a collection of real {@link InetAddress}es. They

   * This is a big deal - we're talking factors of 2-8 in microbenchmarks, not just 10-20%. (This is
   * a hotspot optimizer bug, which should be fixed, but that's a separate, big project).
   *
   * The coding pattern above is heavily used in java.util, e.g. in ArrayList. There is a
   * RangeCheckMicroBenchmark in the JDK that was used to test this.
   *

idden!important}.position-static{position:static!important}.position-relative{position:relative!important}.position-absolute{position:absolute!important}.position-fixed{position:fixed!important}.position-sticky{position:-webkit-sticky!important;position:sticky!important}.fixed-top{position:fixed;top:0;right:0;left:0;z-index:1030}.fixed-bottom{position:fixed;right:0;bottom:0;left:0;z-index:1030}@supports ((position:-webkit-sticky) or (position:sticky)){.sticky-top{position:-webkit-sticky;position...

0FB9          ; mapped                 ; 0F90 0FB5     # 2.0  TIBETAN SUBJOINED LETTER KSSA
0FBA..0FBC    ; valid                                  # 3.0  TIBETAN SUBJOINED LETTER FIXED-FORM WA..TIBETAN SUBJOINED LETTER FIXED-FORM RA
0FBD          ; disallowed                             # NA   <reserved-0FBD>
0FBE..0FC5    ; valid                  ;      ; NV8    # 3.0  TIBETAN KU RU KHA..TIBETAN SYMBOL RDO RJE

:""}.ratio>*{position:absolute;top:0;left:0;width:100%;height:100%}.ratio-1x1{--bs-aspect-ratio:100%}.ratio-4x3{--bs-aspect-ratio:75%}.ratio-16x9{--bs-aspect-ratio:56.25%}.ratio-21x9{--bs-aspect-ratio:42.8571428571%}.fixed-top{position:fixed;top:0;right:0;left:0;z-index:1030}.fixed-bottom{position:fixed;right:0;bottom:0;left:0;z-index:1030}.sticky-top{position:-webkit-sticky;position:sticky;top:0;z-index:1020}.sticky-bottom{position:-webkit-sticky;position:sticky;bottom:0;z-index:1020}@media (mi...

finance

// financial : Binky Moon, LLC
// https://www.iana.org/domains/root/db/financial.html
financial

// fire : Amazon Registry Services, Inc.
// https://www.iana.org/domains/root/db/fire.html
fire

// firestone : Bridgestone Licensing Services, Inc
// https://www.iana.org/domains/root/db/firestone.html
firestone

// firmdale : Firmdale Holdings Limited

fi.eu.org
fi.it
fidelity
fido
fie.ee
filegear-sg.me
filegear.me
film
film.hu
fin.ci
fin.ec
fin.tn
final
finance
financial
finnoy.no
finnøy.no
fire
firebaseapp.com
firenze.it
firestone
firewall-gateway.com
firewall-gateway.de
firewall-gateway.net
firewalledreplit.co
firm.dk
firm.ht
firm.in
firm.nf
firm.ng
firm.ro

## 0.115.8

### Fixes

* 🐛 Fix `OAuth2PasswordRequestForm` and `OAuth2PasswordRequestFormStrict` fixed `grant_type` "password" RegEx. PR [#9783](https://github.com/fastapi/fastapi/pull/9783) by [@skarfie123](https://github.com/skarfie123).

### Refactors