1 files changed, 58 insertions, 0 deletions
diff --git a/sysdeps/ieee754/ldbl-128/s_nextupl.c b/sysdeps/ieee754/ldbl-128/s_nextupl.c
new file mode 100644
index 0000000000..20827e6d09
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128/s_nextupl.c
@@ -0,0 +1,58 @@
+/* Return the least floating-point number greater than X.
+   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>
+
+/* Return the least floating-point number greater than X.  */
+_Float128
+__nextupl (_Float128 x)
+{
+  int64_t hx, ix;
+  uint64_t lx;
+
+  GET_LDOUBLE_WORDS64 (hx, lx, x);
+  ix = hx & 0x7fffffffffffffffLL;
+
+  /* x is nan.  */
+  if (((ix >= 0x7fff000000000000LL)
+       && ((ix - 0x7fff000000000000LL) | lx) != 0))
+    return x + x;
+  if ((ix | lx) == 0)
+    return LDBL_TRUE_MIN;
+  if (hx >= 0)
+    {				/* x > 0.  */
+      if (isinf (x))
+        return x;
+      lx++;
+      if (lx == 0)
+        hx++;
+    }
+  else
+    {				/* x < 0.  */
+      if (lx == 0)
+        hx--;
+      lx--;
+    }
+  SET_LDOUBLE_WORDS64 (x, hx, lx);
+  return x;
+}
+
+libm_alias_ldouble (__nextup, nextup)