about summary refs log tree commit diff
path: root/sysdeps/generic/s_csqrtl.c
diff options
context:
space:
mode:
authorJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
committerJakub Jelinek <jakub@redhat.com>2007-07-12 18:26:36 +0000
commit0ecb606cb6cf65de1d9fc8a919bceb4be476c602 (patch)
tree2ea1f8305970753e4a657acb2ccc15ca3eec8e2c /sysdeps/generic/s_csqrtl.c
parent7d58530341304d403a6626d7f7a1913165fe2f32 (diff)
downloadglibc-0ecb606cb6cf65de1d9fc8a919bceb4be476c602.tar.gz
glibc-0ecb606cb6cf65de1d9fc8a919bceb4be476c602.tar.xz
glibc-0ecb606cb6cf65de1d9fc8a919bceb4be476c602.zip
2.5-18.1
Diffstat (limited to 'sysdeps/generic/s_csqrtl.c')
-rw-r--r--sysdeps/generic/s_csqrtl.c110
1 files changed, 0 insertions, 110 deletions
diff --git a/sysdeps/generic/s_csqrtl.c b/sysdeps/generic/s_csqrtl.c
deleted file mode 100644
index 8e27750a04..0000000000
--- a/sysdeps/generic/s_csqrtl.c
+++ /dev/null
@@ -1,110 +0,0 @@
-/* Complex square root of long double value.
-   Copyright (C) 1997, 1998 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, write to the Free
-   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-   02111-1307 USA.  */
-
-#include <complex.h>
-#include <math.h>
-
-#include "math_private.h"
-
-
-__complex__ long double
-__csqrtl (__complex__ long double x)
-{
-  __complex__ long double res;
-  int rcls = fpclassify (__real__ x);
-  int icls = fpclassify (__imag__ x);
-
-  if (rcls <= FP_INFINITE || icls <= FP_INFINITE)
-    {
-      if (icls == FP_INFINITE)
-	{
-	  __real__ res = HUGE_VALL;
-	  __imag__ res = __imag__ x;
-	}
-      else if (rcls == FP_INFINITE)
-	{
-	  if (__real__ x < 0.0)
-	    {
-	      __real__ res = icls == FP_NAN ? __nanl ("") : 0;
-	      __imag__ res = __copysignl (HUGE_VALL, __imag__ x);
-	    }
-	  else
-	    {
-	      __real__ res = __real__ x;
-	      __imag__ res = (icls == FP_NAN
-			      ? __nanl ("") : __copysignl (0.0, __imag__ x));
-	    }
-	}
-      else
-	{
-	  __real__ res = __nanl ("");
-	  __imag__ res = __nanl ("");
-	}
-    }
-  else
-    {
-      if (icls == FP_ZERO)
-	{
-	  if (__real__ x < 0.0)
-	    {
-	      __real__ res = 0.0;
-	      __imag__ res = __copysignl (__ieee754_sqrtl (-__real__ x),
-					  __imag__ x);
-	    }
-	  else
-	    {
-	      __real__ res = fabsl (__ieee754_sqrtl (__real__ x));
-	      __imag__ res = __copysignl (0.0, __imag__ x);
-	    }
-	}
-      else if (rcls == FP_ZERO)
-	{
-	  long double r = __ieee754_sqrtl (0.5 * fabsl (__imag__ x));
-
-	  __real__ res = __copysignl (r, __imag__ x);
-	  __imag__ res = r;
-	}
-      else
-	{
-	  long double d, r, s;
-
-	  d = __ieee754_hypotl (__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 = __ieee754_sqrtl (0.5L * d + 0.5L * __real__ x);
-	      s = (0.5L * __imag__ x) / r;
-	    }
-	  else
-	    {
-	      s = __ieee754_sqrtl (0.5L * d - 0.5L * __real__ x);
-	      r = fabsl ((0.5L * __imag__ x) / s);
-	    }
-
-	  __real__ res = r;
-	  __imag__ res = __copysignl (s, __imag__ x);
-	}
-    }
-
-  return res;
-}
-weak_alias (__csqrtl, csqrtl)