* math/divtc3.c: New file.

	* math/multc3.c: New file.
	* sysdeps/unix/sysv/linux/sparc/sparc32/Makefile
	[$(subdir) = math] (libm-routines): Add multc3, divtc3.

	* sysdeps/unix/sysv/linux/sparc/sparc32/fpu/Implies: New file.
	* sysdeps/sparc/sparc32/fpu/s_fabsl.c: Include math.h and
	math_ldbl_opt.h.
	(fabsl): Use long_double_symbol instead of weak_alias.
	* sysdeps/sparc/sparc32/fpu/s_fabs.c: Include math.h and
	math_ldbl_opt.h.
	[LONG_DOUBLE_COMPAT] (fabsl): Add compat_symbol.

2006-01-31  Martin Schwidefsky	<schwidefsky@de.ibm.com>
	    Jakub Jelinek  <jakub@redhat.com>

	* sysdeps/unix/sysv/linux/s390/Implies: New file.
	* sysdeps/unix/sysv/linux/s390/fpu/Implies: New file.
	* sysdeps/unix/sysv/linux/s390/nldbl-abi.h: New file.
	* sysdeps/s390/fpu/bits/mathinline.h (signbitl, sqrtl): New inlines.
	* sysdeps/s390/bits/mathdef.h: New file.
	* sysdeps/s390/fpu/e_sqrtl.c: New file.
	* sysdeps/s390/s390-32/bits/wordsize.h (__LONG_DOUBLE_MATH_OPTIONAL,
	__NO_LONG_DOUBLE_MATH): Define.
	* sysdeps/s390/s390-64/bits/wordsize.h: Likewise.
	* sysdeps/s390/Implies: Add ieee754/ldbl-128.
	* sysdeps/s390/ldbl2mpn.c: File removed.
	* sysdeps/s390/fpu/libm-test-ulps: Updated.

2006-01-31  Roland McGrath  <roland@redhat.com>

	* sysdeps/alpha/fpu/bits/mathdef.h: Moved to ...
	* sysdeps/alpha/bits/mathdef.h: ... here.
	* sysdeps/i386/fpu/bits/mathdef.h: Moved to ...
	* sysdeps/i386/bits/mathdef.h: ... here.
	* sysdeps/mips/fpu/bits/mathdef.h: Moved to ...
	* sysdeps/mips/bits/mathdef.h: ... here.
	* sysdeps/m68k/fpu/bits/mathdef.h: Moved to ...
	* sysdeps/m68k/bits/mathdef.h: ... here.
	* sysdeps/powerpc/fpu/bits/mathdef.h: Moved to ...
	* sysdeps/powerpc/bits/mathdef.h: ... here.
	* sysdeps/sparc/fpu/bits/mathdef.h: Moved to ...
	* sysdeps/sparc/bits/mathdef.h: ... here.
	* sysdeps/ia64/fpu/bits/mathdef.h: Moved to ...
	* sysdeps/ia64/bits/mathdef.h: ... here.
	* sysdeps/sh/sh4/fpu/bits/mathdef.h: Moved to ...
	* sysdeps/sh/sh4/bits/mathdef.h: ... here.
	* sysdeps/x86_64/fpu/bits/mathdef.h: Moved to ...
	* sysdeps/x86_64/bits/mathdef.h: ... here.

2006-01-31  Jakub Jelinek  <jakub@redhat.com>

1 files changed, 75 insertions, 0 deletions

diff --git a/math/divtc3.c b/math/divtc3.c
new file mode 100644
index 0000000000..d974ae6454
--- /dev/null
+++ b/math/divtc3.c
@@ -0,0 +1,75 @@
+/* Copyright (C) 2005, 2006 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Richard Henderson <rth@redhat.com>, 2005.
+
+   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 <stdbool.h>
+#include <math.h>
+#include <complex.h>
+
+attribute_hidden
+long double _Complex
+__divtc3 (long double a, long double b, long double c, long double d)
+{
+  long double denom, ratio, x, y;
+
+  /* ??? We can get better behavior from logarithmic scaling instead of
+     the division.  But that would mean starting to link libgcc against
+     libm.  We could implement something akin to ldexp/frexp as gcc builtins
+     fairly easily...  */
+  if (fabsl (c) < fabsl (d))
+    {
+      ratio = c / d;
+      denom = (c * ratio) + d;
+      x = ((a * ratio) + b) / denom;
+      y = ((b * ratio) - a) / denom;
+    }
+  else
+    {
+      ratio = d / c;
+      denom = (d * ratio) + c;
+      x = ((b * ratio) + a) / denom;
+      y = (b - (a * ratio)) / denom;
+    }
+
+  /* Recover infinities and zeros that computed as NaN+iNaN; the only cases
+     are nonzero/zero, infinite/finite, and finite/infinite.  */
+  if (isnan (x) && isnan (y))
+    {
+      if (denom == 0.0 && (!isnan (a) || !isnan (b)))
+	{
+	  x = __copysignl (INFINITY, c) * a;
+	  y = __copysignl (INFINITY, c) * b;
+	}
+      else if ((isinf (a) || isinf (b)) && isfinite (c) && isfinite (d))
+	{
+	  a = __copysignl (isinf (a) ? 1 : 0, a);
+	  b = __copysignl (isinf (b) ? 1 : 0, b);
+	  x = INFINITY * (a * c + b * d);
+	  y = INFINITY * (b * c - a * d);
+	}
+      else if ((isinf (c) || isinf (d)) && isfinite (a) && isfinite (b))
+	{
+	  c = __copysignl (isinf (c) ? 1 : 0, c);
+	  d = __copysignl (isinf (d) ? 1 : 0, d);
+	  x = 0.0 * (a * c + b * d);
+	  y = 0.0 * (b * c - a * d);
+	}
+    }
+
+  return x + I * y;
+}