Comment by an1sotropy

An account of modern C should also note <tgmath.h>, which came with C99, and makes "sin()" and "cos()" do the right thing w.r.t. argument type (float, double, long double), something that has long been possible in Fortran. In C, this allows you to typedef a "real" type, set to either float or double at compile-time, in order to conveniently explore trade-offs associated with the different floating point precisions. The implementation of tgmath.h is an incredible hack though https://www.pixelstech.net/article/1324906407-The-ugliest-C-...