[boost] [Boost-bugs] [ boost-Bugs-751269 ] Cannot compile octonion_test.cpp because of bug in sinc.hpp

From: SourceForge.net (noreply_at_[hidden])
Date: 2003-06-09 05:47:54

Bugs item #751269, was opened at 2003-06-09 03:47
Message generated for change (Tracker Item Submitted) made by Item Submitter
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=107586&aid=751269&group_id=7586

Category: functional
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Mark Rodgers (mark_rodgers)
Summary: Cannot compile octonion_test.cpp because of bug in sinc.hpp

Initial Comment:
octonion_test.cpp cannot be compiled neither gcc 3.2 
nor Intel compiler because of the possible bug in 
boost/math/special_functions/sinc.hpp and in 
boost/math/special_functions/sinhc.hpp. Here are given 
the command line and the error (got from bjam build 
from “status” directory):

    g++  -c -Wall -ftemplate-depth-100   -g -O0 -fno-
inline   -I"../libs/math/test"  -
I "/home/users/vsysoltx/boost_loki/boost_1_30_0"  -
o "../libs/math/test/bin/octonion_test.test/gcc/bjam/archit
ecture-native/debug-symbols-on/inlining-off/instruction-
set-default/optimization-off/profiling-off/rtti-on/runtime-link-
dynamic/shared-linkable-false/threading-single/vtable-
thunks-
default/octonion_test.o"  "../libs/math/test/../octonion/oct
onion_test.cpp"

/home/users/vsysoltx/boost_loki/boost_1_30_0/boost/ma
th/special_functions/sinc.hpp: In
   function `U<T> boost::math::sinc_pi(U<T>) [with T = 
float, U =
   boost::math::octonion]':
../libs/math/octonion/octonion_test.cpp:432:   
instantiated from here
/home/users/vsysoltx/boost_loki/boost_1_30_0/boost/ma
th/special_functions/sinc.hpp:109: no
   matching function for call to `abs(const 
boost::math::octonion<float>&)'
<internal>:109: candidates are: int std::abs(int)
/usr/include/c++/3.2/cstdlib:119:                 long int 
std::abs(long int)
/usr/include/c++/3.2/cstdlib:142:                 long long int
   __gnu_cxx::abs(long long int)
/usr/include/c++/3.2/cmath:87:                 double 
std::abs(double)
/usr/include/c++/3.2/cmath:91:                 float std::abs
(float)
/usr/include/c++/3.2/cmath:95:                 long double 
std::abs(long
   double)

The reason why compiler cannot find the appropriate 
boost::math::abs<T>(octonion<T>) definition is that here 
is used ::abs directive inside function. When this 
directive is used in the function definition, it hides the 
names from outermost namespaces. I don’t know why, I 
haven’t found this in standards, but that’s true both for 
gcc 3.2 and for Intel compiler. To compile these files I 
used a patch which is attached. In it the using directives 
are simply carried out of the function definition. That’s 
work with both compiler.

For any questions you may contact me via 
Vyatcheslav.Sysoltsev_at_[hidden]

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