Method dec

basex-core/src/main/java/org/basex/util/Token.java:1467–1471

Converts a hex character to an integer value. @param ch character @return integer value, or -1 if the input is invalid

(final int ch)

   * @return integer value, or {@code -1} if the input is invalid
   */
  public static int dec(final int ch) {
    if(ch >= '0' && ch <= '9') return ch - '0';
    if(ch >= 'a' && ch <= 'f' || ch >= 'A' && ch <= 'F') return (ch & 0x0F) + 9;
    return -1;
  }

  /**
   * Converts hex characters to an integer value.