* sysdeps/ieee754/ldbl-128ibm/k_cosl.c (__kernel_cosl): Correct index

	for __sincosl_table.
	* sysdeps/ieee754/ldbl-128ibm/k_sincosl.c (__kernel_sincosl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/k_sinl.c (__kernel_sinl): Likewise.

	* sysdeps/ieee754/ldbl-128ibm/s_ceill.c: Correct sign of 0.0.
	* sysdeps/ieee754/ldbl-128ibm/s_floorl.c: Likewise.

	* sysdeps/ieee754/ldbl-128ibm/s_cprojl.c: New file.
	* sysdeps/ieee754/ldbl-128ibm/s_ctanhl.c: New file.
	* sysdeps/ieee754/ldbl-128ibm/s_ctanl.c: New file.

8 files changed, 314 insertions, 28 deletions

diff --git a/sysdeps/ieee754/ldbl-128ibm/k_cosl.c b/sysdeps/ieee754/ldbl-128ibm/k_cosl.c
index 3baf8b7b66..b442582b3f 100644
--- a/sysdeps/ieee754/ldbl-128ibm/k_cosl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/k_cosl.c
@@ -104,6 +104,24 @@ __kernel_cosl(long double x, long double y)
 	 pre-computed tables,  compute cosl(l) and sinl(l) using a
 	 Chebyshev polynomial of degree 10(11) and compute
 	 cosl(h+l) = cosl(h)cosl(l) - sinl(h)sinl(l).  */
+      int six = tix;
+      tix = ((six - 0x3ff00000) >> 4) + 0x3fff0000;
+      index = 0x3ffe - (tix >> 16);
+      hix = (tix + (0x200 << index)) & (0xfffffc00 << index);
+      x = fabsl (x);
+      switch (index)
+	{
+	case 0: index = ((45 << 10) + hix - 0x3ffe0000) >> 8; break;
+	case 1: index = ((13 << 11) + hix - 0x3ffd0000) >> 9; break;
+	default:
+	case 2: index = (hix - 0x3ffc3000) >> 10; break;
+	}
+      hix = (hix << 4) & 0x3fffffff;
+/*
+    The following should work for double but generates the wrong index.
+    For now the code above converts double to ieee extended to compute
+    the index back to double for the h value.
+    
       index = 0x3fe - (tix >> 20);
       hix = (tix + (0x200 << index)) & (0xfffffc00 << index);
       x = fabsl (x);
@@ -114,7 +132,7 @@ __kernel_cosl(long double x, long double y)
 	default:
 	case 2: index = (hix - 0x3fc30000) >> 14; break;
 	}
-
+*/
       SET_LDOUBLE_WORDS64(h, ((u_int64_t)hix) << 32, 0);
       l = y - (h - x);
       z = l * l;
diff --git a/sysdeps/ieee754/ldbl-128ibm/k_sincosl.c b/sysdeps/ieee754/ldbl-128ibm/k_sincosl.c
index 1cea6fef6e..cd2ce7ad1d 100644
--- a/sysdeps/ieee754/ldbl-128ibm/k_sincosl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/k_sincosl.c
@@ -131,6 +131,25 @@ __kernel_sincosl(long double x, long double y, long double *sinx, long double *c
 	 Chebyshev polynomial of degree 10(11) and compute
 	 sinl(h+l) = sinl(h)cosl(l) + cosl(h)sinl(l) and
 	 cosl(h+l) = cosl(h)cosl(l) - sinl(h)sinl(l).  */
+      int six = tix;
+      tix = ((six - 0x3ff00000) >> 4) + 0x3fff0000;
+      index = 0x3ffe - (tix >> 16);
+      hix = (tix + (0x200 << index)) & (0xfffffc00 << index);
+      x = fabsl (x);
+      switch (index)
+	{
+	case 0: index = ((45 << 10) + hix - 0x3ffe0000) >> 8; break;
+	case 1: index = ((13 << 11) + hix - 0x3ffd0000) >> 9; break;
+	default:
+	case 2: index = (hix - 0x3ffc3000) >> 10; break;
+	}
+      hix = (hix << 4) & 0x3fffffff;
+/*
+    The following should work for double but generates the wrong index.
+    For now the code above converts double to ieee extended to compute
+    the index back to double for the h value. 
+    
+
       index = 0x3fe - (tix >> 20);
       hix = (tix + (0x2000 << index)) & (0xffffc000 << index);
       x = fabsl (x);
@@ -141,7 +160,7 @@ __kernel_sincosl(long double x, long double y, long double *sinx, long double *c
 	default:
 	case 2: index = (hix - 0x3fc30000) >> 14; break;
 	}
-
+*/
       SET_LDOUBLE_WORDS64(h, ((u_int64_t)hix) << 32, 0);
       if (iy)
 	l = y - (h - x);
diff --git a/sysdeps/ieee754/ldbl-128ibm/k_sinl.c b/sysdeps/ieee754/ldbl-128ibm/k_sinl.c
index c4dce26f9a..24cb551b6e 100644
--- a/sysdeps/ieee754/ldbl-128ibm/k_sinl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/k_sinl.c
@@ -104,6 +104,24 @@ __kernel_sinl(long double x, long double y, int iy)
 	 pre-computed tables,  compute cosl(l) and sinl(l) using a
 	 Chebyshev polynomial of degree 10(11) and compute
 	 sinl(h+l) = sinl(h)cosl(l) + cosl(h)sinl(l).  */
+      int six = tix;
+      tix = ((six - 0x3ff00000) >> 4) + 0x3fff0000;
+      index = 0x3ffe - (tix >> 16);
+      hix = (tix + (0x200 << index)) & (0xfffffc00 << index);
+      x = fabsl (x);
+      switch (index)
+	{
+	case 0: index = ((45 << 10) + hix - 0x3ffe0000) >> 8; break;
+	case 1: index = ((13 << 11) + hix - 0x3ffd0000) >> 9; break;
+	default:
+	case 2: index = (hix - 0x3ffc3000) >> 10; break;
+	}
+      hix = (hix << 4) & 0x3fffffff;
+/*
+    The following should work for double but generates the wrong index.
+    For now the code above converts double to ieee extended to compute
+    the index back to double for the h value. 
+    
       index = 0x3fe - (tix >> 20);
       hix = (tix + (0x2000 << index)) & (0xffffc000 << index);
       x = fabsl (x);
@@ -114,7 +132,7 @@ __kernel_sinl(long double x, long double y, int iy)
 	default:
 	case 2: index = (hix - 0x3fc30000) >> 14; break;
 	}
-
+*/
       SET_LDOUBLE_WORDS64(h, ((u_int64_t)hix) << 32, 0);
       if (iy)
 	l = y - (h - x);
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_ceill.c b/sysdeps/ieee754/ldbl-128ibm/s_ceill.c
index a4cbbe1048..a606548873 100644
--- a/sysdeps/ieee754/ldbl-128ibm/s_ceill.c
+++ b/sysdeps/ieee754/ldbl-128ibm/s_ceill.c
@@ -18,9 +18,6 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
-/* This has been coded in assembler because GCC makes such a mess of it
-   when it's coded in C.  */
-
 #include <math.h>
 #include <fenv.h>
 #include <math_ldbl_opt.h>
@@ -44,19 +41,23 @@ __ceill (x)
   u.d = x;
 
   if (fabs (u.dd[0]) < TWO52)
-    {      
+    {
+      double high = u.dd[0];
       fesetround(FE_UPWARD);
-      if (u.dd[0] > 0.0)
+      if (high > 0.0)
 	{
-	  u.dd[0] += TWO52;
-	  u.dd[0] -= TWO52;
+	  high += TWO52;
+	  high -= TWO52;
+          if (high == -0.0) high = 0.0;
 	}
-      else if (u.dd[0] < 0.0)
+      else if (high < 0.0)
 	{
-	  u.dd[0] -= TWO52;
-	  u.dd[0] += TWO52;
+	  high -= TWO52;
+	  high += TWO52;
+          if (high == 0.0) high = -0.0;
 	}
-      u.dd[1] = 0.0;      
+      u.dd[0] = high;
+      u.dd[1] = 0.0;
       fesetround(mode);
     }
   else if (fabs (u.dd[1]) < TWO52 && u.dd[1] != 0.0)
@@ -82,10 +83,10 @@ __ceill (x)
 	         adjust for that.  */
 	      high = nextafter (u.dd[0], 0.0);
 	      low = u.dd[1] + (u.dd[0] - high);
-	    }      
+	    }
           fesetround(FE_UPWARD);
 	  low += TWO52;
-	  low -= TWO52;     
+	  low -= TWO52;
           fesetround(mode);
 	}
       else if (u.dd[0] < 0.0)
@@ -103,10 +104,10 @@ __ceill (x)
 	         adjust for that.  */
 	      high = nextafter (u.dd[0], 0.0);
 	      low = u.dd[1] + (u.dd[0] - high);
-	    }      
+	    }
           fesetround(FE_UPWARD);
 	  low -= TWO52;
-	  low += TWO52;      
+	  low += TWO52;
           fesetround(mode);
 	}
       u.dd[0] = high + low;
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_cprojl.c b/sysdeps/ieee754/ldbl-128ibm/s_cprojl.c
new file mode 100644
index 0000000000..2167db3d91
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm/s_cprojl.c
@@ -0,0 +1,54 @@
+/* Compute projection of complex long double value to Riemann sphere.
+   Copyright (C) 1997,1999,2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+   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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <complex.h>
+#include <math.h>
+#include <math_ldbl_opt.h>
+
+__complex__ long double
+__cprojl (__complex__ long double x)
+{
+  __complex__ long double res;
+
+  if (isnan (__real__ x) && isnan (__imag__ x))
+    return x;
+  else if (!isfinite (__real__ x) || !isfinite (__imag__ x))
+    {
+      __real__ res = INFINITY;
+      __imag__ res = __copysignl (0.0, __imag__ x);
+    }
+  else
+    {
+      long double den = (__real__ x * __real__ x + __imag__ x * __imag__ x
+			 + 1.0);
+
+      __real__ res = (2.0 * __real__ x) / den;
+      __imag__ res = (2.0 * __imag__ x) / den;
+      /* __gcc_qmul does not respect -0.0 so we need the following fixup.  */
+       if (__real__ x == 0.0)
+         __real__ res = __real__ x;
+
+       if (__imag__ x == 0.0)
+         __imag__ res = __imag__ x;
+    }
+
+  return res;
+}
+long_double_symbol (libm, __cprojl, cprojl);
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_ctanhl.c b/sysdeps/ieee754/ldbl-128ibm/s_ctanhl.c
new file mode 100644
index 0000000000..7d619039ca
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm/s_ctanhl.c
@@ -0,0 +1,87 @@
+/* Complex hyperbole tangent for long double.  IBM extended format version.
+   Copyright (C) 1997,2005,2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+   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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <complex.h>
+#include <fenv.h>
+#include <math.h>
+#include <math_ldbl_opt.h>
+
+#include "math_private.h"
+
+
+__complex__ long double
+__ctanhl (__complex__ long double x)
+{
+  __complex__ long double res;
+
+  if (!isfinite (__real__ x) || !isfinite (__imag__ x))
+    {
+      if (__isinfl (__real__ x))
+	{
+	  __real__ res = __copysignl (1.0, __real__ x);
+	  __imag__ res = __copysignl (0.0, __imag__ x);
+	}
+      else if (__imag__ x == 0.0)
+	{
+	  res = x;
+	}
+      else
+	{
+	  __real__ res = __nanl ("");
+	  __imag__ res = __nanl ("");
+
+#ifdef FE_INVALID
+	  if (__isinfl (__imag__ x))
+	    feraiseexcept (FE_INVALID);
+#endif
+	}
+    }
+  else
+    {
+      long double sin2ix, cos2ix;
+      long double den;
+
+      __sincosl (2.0 * __imag__ x, &sin2ix, &cos2ix);
+
+      den = (__ieee754_coshl (2.0 * __real__ x) + cos2ix);
+
+      if (den == 0.0L)
+	{
+	  __complex__ long double ez = __cexpl (x);
+	  __complex__ long double emz = __cexpl (-x);
+
+	  res = (ez - emz) / (ez + emz);
+	}
+      else
+	{
+	  __real__ res = __ieee754_sinhl (2.0 * __real__ x) / den;
+	  __imag__ res = sin2ix / den;
+	}
+      /* __gcc_qmul does not respect -0.0 so we need the following fixup.  */
+      if ((__real__ res == 0.0) && (__real__ x == 0.0))
+        __real__ res = __real__ x;
+
+      if ((__real__ res == 0.0) && (__imag__ x == 0.0))
+        __imag__ res = __imag__ x;
+    }
+
+  return res;
+}
+long_double_symbol (libm, __ctanhl, ctanhl);
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_ctanl.c b/sysdeps/ieee754/ldbl-128ibm/s_ctanl.c
new file mode 100644
index 0000000000..00d2aa6b6e
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm/s_ctanl.c
@@ -0,0 +1,88 @@
+/* Complex tangent function for long double.  IBM extended format version.
+   Copyright (C) 1997,2005,2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
+
+   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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <complex.h>
+#include <fenv.h>
+#include <math.h>
+#include <math_ldbl_opt.h>
+
+#include "math_private.h"
+
+
+__complex__ long double
+__ctanl (__complex__ long double x)
+{
+  __complex__ long double res;
+
+  if (!isfinite (__real__ x) || !isfinite (__imag__ x))
+    {
+      if (__isinfl (__imag__ x))
+	{
+	  __real__ res = __copysignl (0.0, __real__ x);
+	  __imag__ res = __copysignl (1.0, __imag__ x);
+	}
+      else if (__real__ x == 0.0)
+	{
+	  res = x;
+	}
+      else
+	{
+	  __real__ res = __nanl ("");
+	  __imag__ res = __nanl ("");
+
+#ifdef FE_INVALID
+	  if (__isinfl (__real__ x))
+	    feraiseexcept (FE_INVALID);
+#endif
+	}
+    }
+  else
+    {
+      long double sin2rx, cos2rx;
+      long double den;
+
+      __sincosl (2.0 * __real__ x, &sin2rx, &cos2rx);
+
+      den = cos2rx + __ieee754_coshl (2.0 * __imag__ x);
+
+
+      if (den == 0.0)
+	{
+	  __complex__ long double ez = __cexpl (1.0i * x);
+	  __complex__ long double emz = __cexpl (-1.0i * x);
+
+	  res = (ez - emz) / (ez + emz) * -1.0i;
+	}
+      else
+	{
+	  __real__ res = sin2rx / den;
+	  __imag__ res = __ieee754_sinhl (2.0 * __imag__ x) / den;
+	}
+      /* __gcc_qmul does not respect -0.0 so we need the following fixup.  */
+      if ((__real__ res == 0.0) && (__real__ x == 0.0))
+        __real__ res = __real__ x;
+
+      if ((__real__ res == 0.0) && (__imag__ x == 0.0))
+        __imag__ res = __imag__ x;
+    }
+
+  return res;
+}
+long_double_symbol (libm, __ctanl, ctanl);
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_floorl.c b/sysdeps/ieee754/ldbl-128ibm/s_floorl.c
index e8ef6e849d..2be5e28698 100644
--- a/sysdeps/ieee754/ldbl-128ibm/s_floorl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/s_floorl.c
@@ -18,9 +18,6 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
-/* This has been coded in assembler because GCC makes such a mess of it
-   when it's coded in C.  */
-
 #include <math.h>
 #include <fenv.h>
 #include <math_ldbl_opt.h>
@@ -44,18 +41,22 @@ __floorl (x)
   u.d = x;
 
   if (fabs (u.dd[0]) < TWO52)
-    {     
+    {
+      double high = u.dd[0];
       fesetround(FE_DOWNWARD);
-      if (u.dd[0] > 0.0)
+      if (high > 0.0)
 	{
-	  u.dd[0] += TWO52;
-	  u.dd[0] -= TWO52;
+	  high += TWO52;
+	  high -= TWO52;
+          if (high == -0.0) high = 0.0;
 	}
-      else if (u.dd[0] < 0.0)
+      else if (high < 0.0)
 	{
-	  u.dd[0] -= TWO52;
-	  u.dd[0] += TWO52;
+	  high -= TWO52;
+	  high += TWO52;
+          if (high == 0.0) high = -0.0;
 	}
+      u.dd[0] = high;
       u.dd[1] = 0.0;
       fesetround(mode);
     }