1 files changed, 59 insertions, 0 deletions
diff --git a/sysdeps/ieee754/ldbl-96/s_totalorderl.c b/sysdeps/ieee754/ldbl-96/s_totalorderl.c
new file mode 100644
index 0000000000..f5be9bf28e
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-96/s_totalorderl.c
@@ -0,0 +1,59 @@
+/* Total order operation.  ldbl-96 version.
+   Copyright (C) 2016-2018 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 <float.h>
+#include <math.h>
+#include <math_private.h>
+#include <libm-alias-ldouble.h>
+#include <nan-high-order-bit.h>
+#include <stdint.h>
+
+int
+__totalorderl (long double x, long double y)
+{
+  int16_t expx, expy;
+  uint32_t hx, hy;
+  uint32_t lx, ly;
+  GET_LDOUBLE_WORDS (expx, hx, lx, x);
+  GET_LDOUBLE_WORDS (expy, hy, ly, y);
+  if (LDBL_MIN_EXP == -16382)
+    {
+      /* M68K variant: for the greatest exponent, the high mantissa
+	 bit is not significant and both values of it are valid, so
+	 set it before comparing.  For the Intel variant, only one
+	 value of the high mantissa bit is valid for each exponent, so
+	 this is not necessary.  */
+      if ((expx & 0x7fff) == 0x7fff)
+	hx |= 0x80000000;
+      if ((expy & 0x7fff) == 0x7fff)
+	hy |= 0x80000000;
+    }
+#if HIGH_ORDER_BIT_IS_SET_FOR_SNAN
+# error not implemented
+#endif
+  uint32_t x_sign = expx >> 15;
+  uint32_t y_sign = expy >> 15;
+  expx ^= x_sign >> 17;
+  hx ^= x_sign;
+  lx ^= x_sign;
+  expy ^= y_sign >> 17;
+  hy ^= y_sign;
+  ly ^= y_sign;
+  return expx < expy || (expx == expy && (hx < hy || (hx == hy && lx <= ly)));
+}
+libm_alias_ldouble (__totalorder, totalorder)