The R13B03 release.OTP_R13B03

1 files changed, 64 insertions, 0 deletions

diff --git a/lib/erl_interface/src/encode/encode_long.c b/lib/erl_interface/src/encode/encode_long.c
new file mode 100644
index 0000000000..d616bb6e47
--- /dev/null
+++ b/lib/erl_interface/src/encode/encode_long.c
@@ -0,0 +1,64 @@
+/*
+ * %CopyrightBegin%
+ * 
+ * Copyright Ericsson AB 1998-2009. All Rights Reserved.
+ * 
+ * The contents of this file are subject to the Erlang Public License,
+ * Version 1.1, (the "License"); you may not use this file except in
+ * compliance with the License. You should have received a copy of the
+ * Erlang Public License along with this software. If not, it can be
+ * retrieved online at http://www.erlang.org/.
+ * 
+ * Software distributed under the License is distributed on an "AS IS"
+ * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
+ * the License for the specific language governing rights and limitations
+ * under the License.
+ * 
+ * %CopyrightEnd%
+ */
+#include "eidef.h"
+#include "eiext.h"
+#include "putget.h"
+
+#define abs(p) (((p)<0) ? -(p) : p)
+
+/* long -> erl_integer */
+/* note that this is the only place where data is stored Little Endian */
+
+#ifndef EI_64BIT
+int ei_encode_long(char *buf, int *index, long p)
+{
+  char *s = buf + *index;
+  char *s0 = s;
+
+  if ((p < 256) && (p >= 0)) {
+    if (!buf) s += 2;
+    else {
+      put8(s,ERL_SMALL_INTEGER_EXT);
+      put8(s,(p & 0xff));
+    }
+  }
+  else if ((p <= ERL_MAX) && (p >= ERL_MIN)) {
+    /* FIXME: Non optimal, could use (p <= LONG_MAX) && (p >= LONG_MIN)
+       and skip next case */
+    if (!buf) s += 5;
+    else {
+      put8(s,ERL_INTEGER_EXT);
+      put32be(s,p);
+    }
+  }
+  else {
+    if (!buf) s += 7;
+    else {
+      put8(s,ERL_SMALL_BIG_EXT);
+      put8(s,4);	         /* len = four bytes */
+      put8(s, p < 0);            /* save sign separately */
+      put32le(s, abs(p));        /* OBS: Little Endian, and p now positive */
+    }
+  }
+  
+  *index += s-s0; 
+
+  return 0; 
+}
+#endif /* EI_64BIT */