src/fflib/problem.cpp:901: error: DEAD_STORE The value written to &umx (type double) is never used. Showing all 1 steps of the trace src/fflib/problem.cpp:901:21: Write of unused value 899. 900. { 901. double umx=std::numeric_limits::min(),umn=std::numeric_limits::max(); ^ 902. for(int i=0;i<4;++i) 903. {