Lines Matching defs:prefix

88   * Generate an IPv6 mask from prefix notation
90   * This will convert a prefix to an IPv6 address mask (used for IPv6 math) 
92   * @param  integer $prefix The prefix size, an integer between 1 and 127 (inclusive)
93   * @return string  The IPv6 mask address for the prefix size
95 function inet6_prefix_to_mask($prefix)
97     /* Make sure the prefix is a number between 1 and 127 (inclusive) */
98     $prefix = intval($prefix);
99     if ($prefix < 0 || $prefix > 128) return false;
101     for ($i = 0; $i < $prefix; $i++) $mask .= '1';
112   * Convert an IPv6 address and prefix size to an address range for the network.
114   * This will take an IPv6 address and prefix and return the first and last address available for the network. 
117   * @param  integer $prefix The prefix size, an integer between 1 and 127 (inclusive)
120 function inet6_to_range($addr, $prefix)
122     $size = 128 - $prefix;
124     $mask = gmp_init('0x' . str_replace(':', '', inet6_expand(inet6_prefix_to_mask($prefix))));
125     $prefix = gmp_and($addr, $mask);
126     $start = gmp_strval(gmp_add($prefix, '0x1'), 16);
129     $end = gmp_strval(gmp_add($prefix, gmp_init($end)), 16);