Fix cproj implmentation.

1 files changed, 5 insertions, 11 deletions

diff --git a/math/s_cprojl.c b/math/s_cprojl.c
index c70cdc47db..19c17a82bd 100644
--- a/math/s_cprojl.c
+++ b/math/s_cprojl.c
@@ -1,5 +1,5 @@
 /* Compute projection of complex long double value to Riemann sphere.
-   Copyright (C) 1997, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1999, 2010 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
 
@@ -25,24 +25,18 @@
 __complex__ long double
 __cprojl (__complex__ long double x)
 {
-  __complex__ long double res;
-
   if (isnan (__real__ x) && isnan (__imag__ x))
     return x;
   else if (!isfinite (__real__ x) || !isfinite (__imag__ x))
     {
+      __complex__ long double res;
+
       __real__ res = INFINITY;
       __imag__ res = __copysignl (0.0, __imag__ x);
-    }
-  else
-    {
-      long double den = (__real__ x * __real__ x + __imag__ x * __imag__ x
-			 + 1.0);
 
-      __real__ res = (2.0 * __real__ x) / den;
-      __imag__ res = (2.0 * __imag__ x) / den;
+      return res;
     }
 
-  return res;
+  return x;
 }
 weak_alias (__cprojl, cprojl)