......
/usr/include/c++/4.7/cmath:105:11: error: ‘::acos’ has not been declared
/usr/include/c++/4.7/cmath:124:11: error: ‘::asin’ has not been declared
/usr/include/c++/4.7/cmath:143:11: error: ‘::atan’ has not been declared
/usr/include/c++/4.7/cmath:162:11: error: ‘::atan2’ has not been declared
/usr/include/c++/4.7/cmath:183:11: error: ‘::ceil’ has not been declared
/usr/include/c++/4.7/cmath:202:11: error: ‘::cos’ has not been declared
/usr/include/c++/4.7/cmath:221:11: error: ‘::cosh’ has not been declared
/usr/include/c++/4.7/cmath:240:11: error: ‘::exp’ has not been declared
/usr/include/c++/4.7/cmath:259:11: error: ‘::fabs’ has not been declared
/usr/include/c++/4.7/cmath:278:11: error: ‘::floor’ has not been declared
/usr/include/c++/4.7/cmath:297:11: error: ‘::fmod’ has not been declared
/usr/include/c++/4.7/cmath:318:11: error: ‘::frexp’ has not been declared
/usr/include/c++/4.7/cmath:337:11: error: ‘::ldexp’ has not been declared
/usr/include/c++/4.7/cmath:356:11: error: ‘::log’ has not been declared
/usr/include/c++/4.7/cmath:375:11: error: ‘::log10’ has not been declared
/usr/include/c++/4.7/cmath:394:11: error: ‘::modf’ has not been declared
/usr/include/c++/4.7/cmath:406:11: error: ‘::pow’ has not been declared
/usr/include/c++/4.7/cmath:443:11: error: ‘::sin’ has not been declared
/usr/include/c++/4.7/cmath:462:11: error: ‘::sinh’ has not been declared
/usr/include/c++/4.7/cmath:481:11: error: ‘::sqrt’ has not been declared
/usr/include/c++/4.7/cmath:500:11: error: ‘::tan’ has not been declared
/usr/include/c++/4.7/cmath:519:11: error: ‘::tanh’ has not been declared
/usr/include/c++/4.7/cmath: In function ‘typename __gnu_cxx::__enable_if<std::__is_arithmetic<_Tp>::__value, int>::__type std::fpclassify(_Tp)’:
/usr/include/c++/4.7/cmath:814:35: error: ‘FP_NAN’ was not declared in this scope
/usr/include/c++/4.7/cmath:814:43: error: ‘FP_INFINITE’ was not declared in this scope
/usr/include/c++/4.7/cmath:814:56: error: ‘FP_NORMAL’ was not declared in this scope
/usr/include/c++/4.7/cmath:815:7: error: ‘FP_SUBNORMAL’ was not declared in this scope
/usr/include/c++/4.7/cmath:815:21: error: ‘FP_ZERO’ was not declared in this scope
.....