From 354bb40e75d94466e91fe6960523612c9d17ccfb Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Thu, 2 Nov 2017 23:11:29 +0300
Subject: Add implementation

---
 mysql/mysys/ptr_cmp.c | 55 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 mysql/mysys/ptr_cmp.c

(limited to 'mysql/mysys/ptr_cmp.c')

diff --git a/mysql/mysys/ptr_cmp.c b/mysql/mysys/ptr_cmp.c
new file mode 100644
index 0000000..9a06d33
--- /dev/null
+++ b/mysql/mysys/ptr_cmp.c
@@ -0,0 +1,55 @@
+/* Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; version 2 of the License.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
+
+#include "mysys_priv.h"
+#include <myisampack.h>
+
+void my_store_ptr(uchar *buff, size_t pack_length, my_off_t pos)
+{
+  switch (pack_length) {
+#if SIZEOF_OFF_T > 4
+  case 8: mi_int8store(buff,pos); break;
+  case 7: mi_int7store(buff,pos); break;
+  case 6: mi_int6store(buff,pos); break;
+  case 5: mi_int5store(buff,pos); break;
+#endif
+  case 4: mi_int4store(buff,pos); break;
+  case 3: mi_int3store(buff,pos); break;
+  case 2: mi_int2store(buff,pos); break;
+  case 1: buff[0]= (uchar) pos; break;
+  default: DBUG_ASSERT(0);
+  }
+  return;
+}
+
+my_off_t my_get_ptr(uchar *ptr, size_t pack_length)
+{
+  my_off_t pos;
+  switch (pack_length) {
+#if SIZEOF_OFF_T > 4
+  case 8: pos= (my_off_t) mi_uint8korr(ptr); break;
+  case 7: pos= (my_off_t) mi_uint7korr(ptr); break;
+  case 6: pos= (my_off_t) mi_uint6korr(ptr); break;
+  case 5: pos= (my_off_t) mi_uint5korr(ptr); break;
+#endif
+  case 4: pos= (my_off_t) mi_uint4korr(ptr); break;
+  case 3: pos= (my_off_t) mi_uint3korr(ptr); break;
+  case 2: pos= (my_off_t) mi_uint2korr(ptr); break;
+  case 1: pos= (my_off_t) *(uchar*) ptr; break;
+  default: DBUG_ASSERT(0); return 0;
+  }
+ return pos;
+}
+
-- 
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