Prepare for radical source tree reorganization. zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 160 insertions, 0 deletions

diff --git a/REORG.TODO/math/s_csinh_template.c b/REORG.TODO/math/s_csinh_template.c
new file mode 100644
index 0000000000..d5ef5ae446
--- /dev/null
+++ b/REORG.TODO/math/s_csinh_template.c
@@ -0,0 +1,160 @@
+/* Complex sine hyperbole function for float types.
+   Copyright (C) 1997-2017 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, see
+   <http://www.gnu.org/licenses/>.  */
+
+#include <complex.h>
+#include <fenv.h>
+#include <math.h>
+#include <math_private.h>
+#include <float.h>
+
+CFLOAT
+M_DECL_FUNC (__csinh) (CFLOAT x)
+{
+  CFLOAT retval;
+  int negate = signbit (__real__ x);
+  int rcls = fpclassify (__real__ x);
+  int icls = fpclassify (__imag__ x);
+
+  __real__ x = M_FABS (__real__ x);
+
+  if (__glibc_likely (rcls >= FP_ZERO))
+    {
+      /* Real part is finite.  */
+      if (__glibc_likely (icls >= FP_ZERO))
+	{
+	  /* Imaginary part is finite.  */
+	  const int t = (int) ((M_MAX_EXP - 1) * M_MLIT (M_LN2));
+	  FLOAT sinix, cosix;
+
+	  if (__glibc_likely (M_FABS (__imag__ x) > M_MIN))
+	    {
+	      M_SINCOS (__imag__ x, &sinix, &cosix);
+	    }
+	  else
+	    {
+	      sinix = __imag__ x;
+	      cosix = 1;
+	    }
+
+	  if (negate)
+	    cosix = -cosix;
+
+	  if (M_FABS (__real__ x) > t)
+	    {
+	      FLOAT exp_t = M_EXP (t);
+	      FLOAT rx = M_FABS (__real__ x);
+	      if (signbit (__real__ x))
+		cosix = -cosix;
+	      rx -= t;
+	      sinix *= exp_t / 2;
+	      cosix *= exp_t / 2;
+	      if (rx > t)
+		{
+		  rx -= t;
+		  sinix *= exp_t;
+		  cosix *= exp_t;
+		}
+	      if (rx > t)
+		{
+		  /* Overflow (original real part of x > 3t).  */
+		  __real__ retval = M_MAX * cosix;
+		  __imag__ retval = M_MAX * sinix;
+		}
+	      else
+		{
+		  FLOAT exp_val = M_EXP (rx);
+		  __real__ retval = exp_val * cosix;
+		  __imag__ retval = exp_val * sinix;
+		}
+	    }
+	  else
+	    {
+	      __real__ retval = M_SINH (__real__ x) * cosix;
+	      __imag__ retval = M_COSH (__real__ x) * sinix;
+	    }
+
+	  math_check_force_underflow_complex (retval);
+	}
+      else
+	{
+	  if (rcls == FP_ZERO)
+	    {
+	      /* Real part is 0.0.  */
+	      __real__ retval = M_COPYSIGN (0, negate ? -1 : 1);
+	      __imag__ retval = __imag__ x - __imag__ x;
+	    }
+	  else
+	    {
+	      __real__ retval = M_NAN;
+	      __imag__ retval = M_NAN;
+
+	      feraiseexcept (FE_INVALID);
+	    }
+	}
+    }
+  else if (rcls == FP_INFINITE)
+    {
+      /* Real part is infinite.  */
+      if (__glibc_likely (icls > FP_ZERO))
+	{
+	  /* Imaginary part is finite.  */
+	  FLOAT sinix, cosix;
+
+	  if (__glibc_likely (M_FABS (__imag__ x) > M_MIN))
+	    {
+	      M_SINCOS (__imag__ x, &sinix, &cosix);
+	    }
+	  else
+	    {
+	      sinix = __imag__ x;
+	      cosix = 1;
+	    }
+
+	  __real__ retval = M_COPYSIGN (M_HUGE_VAL, cosix);
+	  __imag__ retval = M_COPYSIGN (M_HUGE_VAL, sinix);
+
+	  if (negate)
+	    __real__ retval = -__real__ retval;
+	}
+      else if (icls == FP_ZERO)
+	{
+	  /* Imaginary part is 0.0.  */
+	  __real__ retval = negate ? -M_HUGE_VAL : M_HUGE_VAL;
+	  __imag__ retval = __imag__ x;
+	}
+      else
+	{
+	  __real__ retval = M_HUGE_VAL;
+	  __imag__ retval = __imag__ x - __imag__ x;
+	}
+    }
+  else
+    {
+      __real__ retval = M_NAN;
+      __imag__ retval = __imag__ x == 0 ? __imag__ x : M_NAN;
+    }
+
+  return retval;
+}
+
+declare_mgen_alias (__csinh, csinh)
+
+#if M_LIBM_NEED_COMPAT (csinh)
+declare_mgen_libm_compat (__csinh, csinh)
+#endif