Makefile.am (libquadmath_la_SOURCES): Add new math/* files.

2012-11-01  Tobias Burnus  <burnus@net-b.de>

        * Makefile.am (libquadmath_la_SOURCES): Add new math/* files.
        * Makefile.in: Regenerated.
        * math/acoshq.c: Update comment.
        * math/acosq.c: Ditto.
        * math/asinhq.c: Ditto.
        * math/asinq.c: Ditto.
        * math/atan2q.c: Ditto.
        * math/atanhq.c: Ditto.
        * math/ceilq.c: Ditto.
        * math/copysignq.c: Ditto.
        * math/cosq.c: Ditto.
        * math/coshq.c: Ditto.
        * math/erfq.c: Ditto.
        * math/fabsq.c: Ditto.
        * math/finiteq.c: Ditto.
        * math/floorq.c: Ditto.
        * math/fmodq.c: Ditto.
        * math/frexpq.c: Ditto.
        * math/isnanq.c: Ditto.
        * math/j0q.c: Ditto.
        * math/j1q.c: Ditto.
        * math/ldexpq.c: Ditto.
        * math/llroundq.c: Ditto.
        * math/log10q.c: Ditto.
        * math/log1pq.c: Ditto.
        * math/log2q.c: Ditto.
        * math/logq.c: Ditto.
        * math/lroundq.c: Ditto.
        * math/modfq.c: Ditto.
        * math/nextafterq.c: Ditto.
        * math/powq.c: Ditto.
        * math/rem_pio2q.c: Ditto.
        * math/remainderq.c: Ditto.
        * math/rintq.c: Ditto.
        * math/roundq.c: Ditto.
        * math/scalblnq.c: Ditto.
        * math/scalbnq.c: Ditto.
        * math/sincosq_kernel.c: Ditto.
        * math/sinq.c: Ditto.
        * math/tanq.c: Ditto.
        * math/expq.c: Ditto.
        (__expq_table, expq): Renamed local array from __expl_table.
        * math/cosq_kernel.c (__quadmath_kernel_cosq): Fix sign
        * handling.
        * math/cacoshq.c: Changes from GLIBC; fix returned sign.
        * math/casinhq.c: Changes from GLIBC to fix special-case.
        * math/cbrtq.c: Use modified GLIBC version.
        * math/complex.c (ccoshd, cexpq, clog10q, clogq, csinhq, csinq,
        ctanhq, ctanq): Moved to separates files.
        (mult_c128, div_c128): Removed no longer needed functions.
        (cexpiq): Call sincosq instead of sinq and cosq.
        (cosq): Call cosh(-re,im) instead of cosq/sinq/sinh/cosh.
        * math/ccoshq.c (ccoshq): New file, moved from complex.c and
        modified based on GLIBC.
        * math/cexpq.c (cexp): Ditto.
        * math/clog10q.c (clog10q): Ditto.
        * math/clogq.c (clogq): Ditto.
        * math/csinhq.c: Ditto.
        * math/csinq.c: Ditto.
        * math/csqrtq.c: Ditto.
        * math/ctanhq.c: Ditto.
        * math/ctanq.c: Ditto.
        * math/fmaq.c (fmaq): Port TININESS_AFTER_ROUNDING handling
        from GLIBC.
        * math/ilogbq.c (ilogbq): Add errno = EDOM handling.
        * math/isinf_nsq.c (__quadmath_isinf_nsq): New file, ported
        from GLIBC.
        * math/lgammaq.c (lgammaq): Add signgam handling.
        * math/sinhq.c (sinhq): Fix sign handling.
        * math/sinq_kernel.c (__quadmath_kernel_sinq): Ditto.
        * math/tgammaq.c (tgammaq): Ditto.
        * math/x2y2m1q.c: New file.
        * quadmath-imp.h (TININESS_AFTER_ROUNDING): New define.
        (__quadmath_x2y2m1q, __quadmath_isinf_nsq): New prototypes.

From-SVN: r193063

1 files changed, 143 insertions, 0 deletions

diff --git a/libquadmath/math/csqrtq.c b/libquadmath/math/csqrtq.c
new file mode 100644
index 0000000..5279e437
--- /dev/null
+++ b/libquadmath/math/csqrtq.c
@@ -0,0 +1,143 @@
+/* Complex square root of __float128 value.
+   Copyright (C) 1997-2012 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Based on an algorithm by Stephen L. Moshier <moshier@world.std.com>.
+   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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include "quadmath-imp.h"
+
+#ifdef HAVE_FENV_H
+# include <fenv.h>
+#endif
+
+
+__complex128
+csqrtq (__complex128 x)
+{
+  __complex128 res;
+  int rcls = fpclassifyq (__real__ x);
+  int icls = fpclassifyq (__imag__ x);
+
+  if (__builtin_expect (rcls <= QUADFP_INFINITE || icls <= QUADFP_INFINITE, 0))
+    {
+      if (icls == QUADFP_INFINITE)
+	{
+	  __real__ res = HUGE_VALQ;
+	  __imag__ res = __imag__ x;
+	}
+      else if (rcls == QUADFP_INFINITE)
+	{
+	  if (__real__ x < 0.0Q)
+	    {
+	      __real__ res = icls == QUADFP_NAN ? nanq ("") : 0;
+	      __imag__ res = copysignq (HUGE_VALQ, __imag__ x);
+	    }
+	  else
+	    {
+	      __real__ res = __real__ x;
+	      __imag__ res = (icls == QUADFP_NAN
+			      ? nanq ("") : copysignq (0.0Q, __imag__ x));
+	    }
+	}
+      else
+	{
+	  __real__ res = nanq ("");
+	  __imag__ res = nanq ("");
+	}
+    }
+  else
+    {
+      if (__builtin_expect (icls == QUADFP_ZERO, 0))
+	{
+	  if (__real__ x < 0.0Q)
+	    {
+	      __real__ res = 0.0Q;
+	      __imag__ res = copysignq (sqrtq (-__real__ x),
+					__imag__ x);
+	    }
+	  else
+	    {
+	      __real__ res = fabsq (sqrtq (__real__ x));
+	      __imag__ res = copysignq (0.0Q, __imag__ x);
+	    }
+	}
+      else if (__builtin_expect (rcls == QUADFP_ZERO, 0))
+	{
+	  __float128 r;
+	  if (fabsq (__imag__ x) >= 2.0Q * FLT128_MIN)
+	    r = sqrtq (0.5Q * fabsq (__imag__ x));
+	  else
+	    r = 0.5Q * sqrtq (2.0Q * fabsq (__imag__ x));
+
+	  __real__ res = r;
+	  __imag__ res = copysignq (r, __imag__ x);
+	}
+      else
+	{
+	  __float128 d, r, s;
+	  int scale = 0;
+
+	  if (fabsq (__real__ x) > FLT128_MAX / 4.0Q)
+	    {
+	      scale = 1;
+	      __real__ x = scalbnq (__real__ x, -2 * scale);
+	      __imag__ x = scalbnq (__imag__ x, -2 * scale);
+	    }
+	  else if (fabsq (__imag__ x) > FLT128_MAX / 4.0Q)
+	    {
+	      scale = 1;
+	      if (fabsq (__real__ x) >= 4.0Q * FLT128_MIN)
+		__real__ x = scalbnq (__real__ x, -2 * scale);
+	      else
+		__real__ x = 0.0Q;
+	      __imag__ x = scalbnq (__imag__ x, -2 * scale);
+	    }
+	  else if (fabsq (__real__ x) < FLT128_MIN
+		   && fabsq (__imag__ x) < FLT128_MIN)
+	    {
+	      scale = -(FLT128_MANT_DIG / 2);
+	      __real__ x = scalbnq (__real__ x, -2 * scale);
+	      __imag__ x = scalbnq (__imag__ x, -2 * scale);
+	    }
+
+	  d = hypotq (__real__ x, __imag__ x);
+	  /* Use the identity   2  Re res  Im res = Im x
+	     to avoid cancellation error in  d +/- Re x.  */
+	  if (__real__ x > 0)
+	    {
+	      r = sqrtq (0.5Q * (d + __real__ x));
+	      s = 0.5Q * (__imag__ x / r);
+	    }
+	  else
+	    {
+	      s = sqrtq (0.5Q * (d - __real__ x));
+	      r = fabsq (0.5Q * (__imag__ x / s));
+	    }
+
+	  if (scale)
+	    {
+	      r = scalbnq (r, scale);
+	      s = scalbnq (s, scale);
+	    }
+
+	  __real__ res = r;
+	  __imag__ res = copysignq (s, __imag__ x);
+	}
+    }
+
+  return res;
+}