Too Long; Didn't Read
For quite some time, I’ve used <a href="https://bitbucket.org/smcallis/cplxtest/src/299c917040d42fbeafdf2ac29cbba4d2990f312c/cfloat.h?at=master&fileviewer=file-view-default">my own</a> complex number definition in C++. Mostly out of misplaced distrust for std::complex. I have a co-worker who’s done the same. Recently he wanted to move to using the complex number support introduced in C99 for reasons of simplicity.