1 files changed, 123 insertions, 0 deletions
diff --git a/packages/libc/src/nin.inc b/packages/libc/src/nin.inc
new file mode 100644
index 0000000000..217b89707b
--- /dev/null
+++ b/packages/libc/src/nin.inc
@@ -0,0 +1,123 @@
+Function IN_CLASSA(a: in_addr_t): Boolean;
+
+begin
+  Result:=((a and $80000000)=0);
+end;
+
+
+Function IN_CLASSB(a: in_addr_t): Boolean;
+
+begin
+  Result:=((a and $c0000000)=$80000000);
+end;
+
+Function IN_CLASSC(a: in_addr_t): Boolean;
+begin
+  Result:=((a and $e0000000)=$c0000000);
+end;
+
+Function IN_CLASSD(a: in_addr_t): Boolean;
+begin
+  Result:=((a and $f0000000)=$e0000000);
+end;
+
+Function IN_MULTICAST(a: in_addr_t): Boolean;
+begin
+  Result:=IN_CLASSD(a);
+end;
+
+Function IN_EXPERIMENTAL(a: in_addr_t): Boolean;
+begin
+  Result:=((a and $e0000000)=$e0000000);
+end;
+
+Function IN_BADCLASS(a: in_addr_t): Boolean;
+begin
+  Result:=((a and $f0000000)=$f0000000);
+end;
+
+
+Function IN6_IS_ADDR_UNSPECIFIED(const a: in6_addr): Boolean;
+begin
+  Result:=(a.s6_addr32[0]=0) and
+            (a.s6_addr32[1]=0) and
+            (a.s6_addr32[2]=0) and
+            (a.s6_addr32[3]=0);
+end;
+
+Function IN6_IS_ADDR_LOOPBACK(const a: in6_addr): Boolean;
+begin
+  Result:=(a.s6_addr32[0]=0) and
+            (a.s6_addr32[1]=0) and
+            (a.s6_addr32[2]=0) and
+            (a.s6_addr32[3]=htonl(1));
+end;
+
+Function IN6_IS_ADDR_MULTICAST(const a: in6_addr): Boolean;
+begin
+  Result:=(a.s6_addr[0]=$ff);
+end;
+
+Function IN6_IS_ADDR_LINKLOCAL(const a: in6_addr): Boolean;
+begin
+  Result:=((a.s6_addr32[0] and htonl($ffc00000))=htonl($fe800000));
+end;
+
+Function IN6_IS_ADDR_SITELOCAL(const a: in6_addr): Boolean;
+begin
+  Result:=((a.s6_addr32[0] and htonl($ffc00000))=htonl($fec00000))
+end;
+
+Function IN6_IS_ADDR_V4MAPPED(const a: in6_addr): Boolean;
+begin
+  Result:=(a.s6_addr32[0]=0) and
+            (a.s6_addr32[1]=0) and
+            (a.s6_addr32[2]=htonl($ffff));
+end;
+
+Function IN6_IS_ADDR_V4COMPAT(const a: in6_addr): Boolean;
+begin
+  Result:=(a.s6_addr32[0]=0) and
+            (a.s6_addr32[1]=0) and
+            (a.s6_addr32[2]=0) and
+            (ntohl(a.s6_addr32[3]) > 1);
+end;
+
+Function IN6_ARE_ADDR_EQUAL(const a, b: in6_addr): Boolean;
+begin
+  Result:=(a.s6_addr32[0]=b.s6_addr32[0]) and
+            (a.s6_addr32[1]=b.s6_addr32[1]) and
+            (a.s6_addr32[2]=b.s6_addr32[2]) and
+            (a.s6_addr32[3]=b.s6_addr32[3]);
+end;
+
+Function IN6_IS_ADDR_MC_NODELOCAL(const a: in6_addr): Boolean;
+begin
+  Result:=IN6_IS_ADDR_MULTICAST(a) and
+            ((a.s6_addr[1] and $f)=$1);
+end;
+
+Function IN6_IS_ADDR_MC_LINKLOCAL(const a: in6_addr): Boolean;
+begin
+  Result:=IN6_IS_ADDR_MULTICAST(a) and
+            ((a.s6_addr[1] and $f)=$2);
+end;
+
+Function IN6_IS_ADDR_MC_SITELOCAL(const a: in6_addr): Boolean;
+begin
+  Result:=IN6_IS_ADDR_MULTICAST(a) and
+            ((a.s6_addr[1] and $f)=$5);
+end;
+
+Function IN6_IS_ADDR_MC_ORGLOCAL(const a: in6_addr): Boolean;
+begin
+  Result:=IN6_IS_ADDR_MULTICAST(a) and
+            ((a.s6_addr[1] and $f)=$8);
+end;
+
+Function IN6_IS_ADDR_MC_GLOBAL(const a: in6_addr): Boolean;
+begin
+  Result:=IN6_IS_ADDR_MULTICAST(a) and
+            ((a.s6_addr[1] and $f)=$e);
+end;
+