re PR libstdc++/50880 (__complex_acosh() picks wrong complex branch)

[platform/upstream/gcc.git] / libstdc++-v3 / include / tr1 / complex

diff --git a/libstdc++-v3/include/tr1/complex b/libstdc++-v3/include/tr1/complex
index fc213b8..d29b13f 100644 (file)
--- a/libstdc++-v3/include/tr1/complex
+++ b/libstdc++-v3/include/tr1/complex
@@ -189,6 +189,8 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
                            * (__z.real() + __z.imag()) - _Tp(1.0),
                            _Tp(2.0) * __z.real() * __z.imag());
       __t = std::sqrt(__t);
+      if (__z.real() < _Tp(-0.0))
+       __t = -__t;
 
       return std::log(__t + __z);
     }