From 5838780e11d1369857f2147d830d18f1c43efc82 Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Fri, 11 Apr 1997 10:28:26 +0000
Subject: [PATCH] Complex sinh function for m68k.

---
 sysdeps/m68k/fpu/s_csinh.c  | 128 ++++++++++++++++++++++++++++++++++++++++++++
 sysdeps/m68k/fpu/s_csinhf.c |   4 ++
 sysdeps/m68k/fpu/s_csinhl.c |   4 ++
 3 files changed, 136 insertions(+)
 create mode 100644 sysdeps/m68k/fpu/s_csinh.c
 create mode 100644 sysdeps/m68k/fpu/s_csinhf.c
 create mode 100644 sysdeps/m68k/fpu/s_csinhl.c

diff --git a/sysdeps/m68k/fpu/s_csinh.c b/sysdeps/m68k/fpu/s_csinh.c
new file mode 100644
index 0000000..c409ed0
--- /dev/null
+++ b/sysdeps/m68k/fpu/s_csinh.c
@@ -0,0 +1,128 @@
+/* Complex sine hyperbole function.  m68k fpu version
+   Copyright (C) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#define __LIBC_M81_MATH_INLINES
+#include <complex.h>
+#include <math.h>
+
+#ifndef SUFF
+#define SUFF
+#endif
+#ifndef huge_val
+#define huge_val HUGE_VAL
+#endif
+#ifndef float_type
+#define float_type double
+#endif
+
+#define CONCATX(a,b) __CONCAT(a,b)
+#define s(name) CONCATX(name,SUFF)
+#define m81(func) __m81_u(s(func))
+
+__complex__ float_type
+s(__csinh) (__complex__ float_type x)
+{
+  __complex__ float_type retval;
+  int negate = m81(__signbit) (__real__ x);
+
+  __real__ x = s(fabs) (__real__ x);
+
+  if (m81(__finite) (__real__ x))
+    {
+      if (m81(__finite) (__imag__ x))
+	{
+	  float_type sinh_val;
+	  float_type sin_ix, cos_ix;
+
+	  __asm ("fsincos%.x %2,%1:%0" : "=f" (sin_ix), "=f" (cos_ix)
+		 : "f" (__imag__ x));
+	  sinh_val = m81(__ieee754_sinh) (__real__ x);
+	  __real__ retval = cos_ix * sinh_val;
+	  __imag__ retval = sin_ix * sinh_val;
+
+	  if (negate)
+	    __real__ retval = -__real__ retval;
+	}
+      else if (__real__ x == 0)
+	{
+	  __real__ retval = 0.0;
+	  __imag__ retval = 0.0/0.0;
+
+	  if (negate)
+	    __real__ retval = -__real__ retval;
+	}
+      else
+	__real__ retval = __imag__ retval = 0.0/0.0;
+    }
+  else if (m81(__isinf) (__real__ x))
+    {
+      if (__imag__ x == 0.0)
+	{
+	  __real__ retval = negate ? -huge_val : huge_val;
+	  __imag__ retval = __imag__ x;
+	}
+      else if (m81(__finite) (__imag__ x))
+	{
+	  float_type remainder, pi_2;
+	  int quadrant;
+	  __real__ retval = __imag__ retval = huge_val;
+
+	  __asm ("fmovecr %#0,%0\n\tfscale%.w %#-1,%0" : "=f" (pi_2));
+	  __asm ("fmod%.x %2,%0\n\tfmove%.l %/fpsr,%1"
+		 : "=f" (remainder), "=dm" (quadrant)
+		 : "f" (pi_2), "0" (__imag__ x));
+	  quadrant = (quadrant >> 16) & 0x83;
+	  if (quadrant & 0x80)
+	    quadrant ^= 0x83;
+	  if (negate)
+	    quadrant ^= 1;
+	  switch (quadrant)
+	    {
+	    default:
+	      break;
+	    case 1:
+	      __real__ retval = -__real__ retval;
+	      break;
+	    case 2:
+	      __real__ retval = -__real__ retval;
+	    case 3:
+	      __imag__ retval = -__imag__ retval;
+	      break;
+	    }
+	}
+      else
+	{
+	  /* The subtraction raises the invalid exception.  */
+	  __real__ retval = huge_val;
+	  __imag__ retval = huge_val - huge_val;
+	}
+    }
+  else if (__imag__ x == 0.0)
+    {
+      __real__ retval = 0.0/0.0;
+      __imag__ retval = __imag__ x;
+    }
+  else
+    __real__ retval = __imag__ retval = 0.0/0.0;
+
+  return retval;
+}
+#define weak_aliasx(a,b) weak_alias(a,b)
+weak_aliasx (s(__csinh), s(csinh))
diff --git a/sysdeps/m68k/fpu/s_csinhf.c b/sysdeps/m68k/fpu/s_csinhf.c
new file mode 100644
index 0000000..42c114b
--- /dev/null
+++ b/sysdeps/m68k/fpu/s_csinhf.c
@@ -0,0 +1,4 @@
+#define SUFF f
+#define float_type float
+#define huge_val HUGE_VALF
+#include <s_csinh.c>
diff --git a/sysdeps/m68k/fpu/s_csinhl.c b/sysdeps/m68k/fpu/s_csinhl.c
new file mode 100644
index 0000000..c8aa5c7
--- /dev/null
+++ b/sysdeps/m68k/fpu/s_csinhl.c
@@ -0,0 +1,4 @@
+#define SUFF l
+#define float_type long double
+#define huge_val HUGE_VALL
+#include <s_csinh.c>
-- 
2.7.4