1 files changed, 100 insertions, 0 deletions
diff --git a/sysdeps/libm-ieee754/s_csinhf.c b/sysdeps/libm-ieee754/s_csinhf.c
new file mode 100644
index 0000000000..204bbfebb9
--- /dev/null
+++ b/sysdeps/libm-ieee754/s_csinhf.c
@@ -0,0 +1,100 @@
+/* Complex sine hyperbole function for float.
+   Copyright (C) 1997 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 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.  */
+
+#include <complex.h>
+#include <math.h>
+
+
+__complex__ float
+__csinhf (__complex__ float x)
+{
+  __complex__ float retval;
+  int negate = signbit (__real__ x);
+
+  __real__ x = fabsf (__real__ x);
+
+  if (isfinite (__real__ x))
+    {
+      if (isfinite (__imag__ x))
+	{
+	  float exp_val = __expf (__real__ x);
+	  float rec_exp_val = 1.0 / exp_val;
+
+	  __real__ retval = (0.5 * (exp_val - rec_exp_val)
+			     * __cosf (__imag__ x));
+	  __imag__ retval = (0.5 * (exp_val - rec_exp_val)
+			     * __sinf (__imag__ x));
+
+	  if (negate)
+	    __real__ retval = -__real__ retval;
+	}
+      else
+	{
+	  if (__real__ x == 0)
+	    {
+	      __real__ retval = __copysignf (0.0, negate ? -1.0 : 1.0);
+	      __imag__ retval = __nanf ("") + __nanf ("");
+	    }
+	  else
+	    {
+	      __real__ retval = __nanf ("");
+	      __imag__ retval = __nanf ("");
+	    }
+	}
+    }
+  else if (__isinff (__real__ x))
+    {
+      if (__imag__ x == 0.0)
+	{
+	  __real__ retval = negate ? -HUGE_VALF : HUGE_VALF;
+	  __imag__ retval = __imag__ x;
+	}
+      else if (isfinite (__imag__ x))
+	{
+	  __real__ retval = __copysignf (HUGE_VALF, __cosf (__imag__ x));
+	  __imag__ retval = __copysignf (HUGE_VALF, __sinf (__imag__ x));
+
+	  if (negate)
+	    __real__ retval = -__real__ retval;
+	}
+      else
+	{
+	  /* The addition raises the invalid exception.  */
+	  __real__ retval = HUGE_VALF;
+	  __imag__ retval = __nanf ("") + __nanf ("");
+	}
+    }
+  else
+    {
+      if (__imag__ x == 0.0)
+	{
+	  __real__ retval = __nanf ("");
+	  __imag__ retval = __imag__ x;
+	}
+      else
+	{
+	  __real__ retval = __nanf ("");
+	  __imag__ retval = __nanf ("");
+	}
+    }
+
+  return retval;
+}
+weak_alias (__csinhf, csinhf)