1 files changed, 90 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc32/fpu/s_llround.c b/sysdeps/powerpc/powerpc32/fpu/s_llround.c
new file mode 100644
index 0000000000..b09949bce5
--- /dev/null
+++ b/sysdeps/powerpc/powerpc32/fpu/s_llround.c
@@ -0,0 +1,90 @@
+/* Round double value to long long int.
+   Copyright (C) 1997-2016 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 <limits.h>
+#include <math.h>
+#include <math_ldbl_opt.h>
+#include <math_private.h>
+#include <stdint.h>
+
+/* Round to the nearest integer, with values exactly on a 0.5 boundary
+   rounded away from zero, regardless of the current rounding mode.
+   If (long long)x, when x is out of range of a long long, clips at
+   LLONG_MAX or LLONG_MIN, then this implementation also clips.  */
+
+long long int
+__llround (double x)
+{
+  long long xr;
+  if (HAVE_PPC_FCTIDZ)
+    xr = (long long) x;
+  else
+    {
+      /* Avoid incorrect exceptions from libgcc conversions (as of GCC
+	 5): <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59412>.  */
+      if (fabs (x) < 0x1p31)
+	xr = (long long int) (long int) x;
+      else
+	{
+	  uint64_t i0;
+	  EXTRACT_WORDS64 (i0, x);
+	  int exponent = ((i0 >> 52) & 0x7ff) - 0x3ff;
+	  if (exponent < 63)
+	    {
+	      unsigned long long int mant
+		= (i0 & ((1ULL << 52) - 1)) | (1ULL << 52);
+	      if (exponent < 52)
+		/* llround is not required to raise "inexact".  */
+		mant >>= 52 - exponent;
+	      else
+		mant <<= exponent - 52;
+	      xr = (long long int) ((i0 & (1ULL << 63)) != 0 ? -mant : mant);
+	    }
+	  else if (x == (double) LLONG_MIN)
+	    xr = LLONG_MIN;
+	  else
+	    xr = (long long int) (long int) x << 32;
+	}
+    }
+  /* Avoid spurious "inexact" converting LLONG_MAX to double, and from
+     subtraction when the result is out of range, by returning early
+     for arguments large enough that no rounding is needed.  */
+  if (!(fabs (x) < 0x1p52))
+    return xr;
+  double xrf = (double) xr;
+
+  if (x >= 0.0)
+    {
+      if (x - xrf >= 0.5)
+	xr += (long long) ((unsigned long long) xr + 1) > 0;
+    }
+  else
+    {
+      if (xrf - x >= 0.5)
+	xr -= (long long) ((unsigned long long) xr - 1) < 0;
+    }
+  return xr;
+}
+weak_alias (__llround, llround)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__llround, __llroundl)
+weak_alias (__llround, llroundl)
+#endif
+#if LONG_DOUBLE_COMPAT (libm, GLIBC_2_1)
+compat_symbol (libm, __llround, llroundl, GLIBC_2_1);
+#endif