1.cc: Use non-negative rho argument.

	* testsuite/26_numerics/complex/value_operations/1.cc: Use
	non-negative rho argument.

From-SVN: r224739

libstdc++-v3/ChangeLog

 2015-06-22  Jonathan Wakely  <jwakely@redhat.com>
 
+	* testsuite/26_numerics/complex/value_operations/1.cc: Use
+	non-negative rho argument.
+
 	* include/debug/list (__gnu_debug::list): Use allocator-aware
 	_Safe_container base.
 	* include/debug/string (__gnu_debug::basic_string): Use

libstdc++-v3/testsuite/26_numerics/complex/value_operations/1.cc

@@ -53,7 +53,7 @@ void test01()
 
  complex_type e __attribute__((unused)) = conj(c);
  
- complex_type f = polar(c.imag(), 0.0);
+ complex_type f = polar(std::abs(c.imag()), 0.0);
  VERIFY( f.real() != 0 );
 }