4255471e   
   From: root@127.0.0.1   
      
   On Wed, 21 Sep 2011 06:29:39 -0700 (PDT), ptyxs  wrote:   
   >   
   > Thanks to all for the interesting answers.   
   > In fact, such a program as the following (with std:: in front of   
   > sqrt) :   
   >   
   >     int a = 25;   
   >     std::cout << std::sqrt(a) << std::endl;   
   >   
   > doesn't compile (as expected), and outputs the following error   
   > message :   
   >   
   > [toto@localhost ~]$ g++  -std=c++0x  -Wall -pedantic  sqrtmy3.cpp   
   > sqrtmy3.cpp: In function ‘int main()’:   
   > sqrtmy3.cpp:8:18: error: ‘sqrt’ is not a member of ‘std’   
   > sqrtmy3.cpp:8:18: note: suggested alternative:   
   > /usr/include/bits/mathcalls.h:157:1: note:   ‘sqrt’   
      
   I'd say that your compiler or more likely standard headers are wrong.   
      
   For what it's worth I get   
      
   CC -o main x.cpp -library=stlport4   
   "x.cpp", line 8: Error: Overloading ambiguity between   
   "std::sqrt(double)" and "std::sqrt(long double)".   
   1 Error(s) detected.   
      
   with Oracle Studio 12.3 beta.   
      
   A+   
   Paul   
      
      
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