1 files changed, 50 insertions, 0 deletions
diff --git a/REORG.TODO/sysdeps/ieee754/dbl-64/wordsize-64/s_totalorder.c b/REORG.TODO/sysdeps/ieee754/dbl-64/wordsize-64/s_totalorder.c
new file mode 100644
index 0000000000..1e8d57f32b
--- /dev/null
+++ b/REORG.TODO/sysdeps/ieee754/dbl-64/wordsize-64/s_totalorder.c
@@ -0,0 +1,50 @@
+/* Total order operation.  dbl-64/wordsize-64 version.
+   Copyright (C) 2016-2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <math.h>
+#include <math_private.h>
+#include <nan-high-order-bit.h>
+#include <stdint.h>
+
+int
+totalorder (double x, double y)
+{
+  int64_t ix, iy;
+  EXTRACT_WORDS64 (ix, x);
+  EXTRACT_WORDS64 (iy, y);
+#if HIGH_ORDER_BIT_IS_SET_FOR_SNAN
+  /* For the preferred quiet NaN convention, this operation is a
+     comparison of the representations of the arguments interpreted as
+     sign-magnitude integers.  If both arguments are NaNs, invert the
+     quiet/signaling bit so comparing that way works.  */
+  if ((ix & 0x7fffffffffffffffULL) > 0x7ff0000000000000ULL
+      && (iy & 0x7fffffffffffffffULL) > 0x7ff0000000000000ULL)
+    {
+      ix ^= 0x0008000000000000ULL;
+      iy ^= 0x0008000000000000ULL;
+    }
+#endif
+  uint64_t ix_sign = ix >> 63;
+  uint64_t iy_sign = iy >> 63;
+  ix ^= ix_sign >> 1;
+  iy ^= iy_sign >> 1;
+  return ix <= iy;
+}
+#ifdef NO_LONG_DOUBLE
+weak_alias (totalorder, totalorderl)
+#endif