BCS: > If you have no special reason to use float or double and are not IO or memory > space bound, use real. Every machine I know the details of will use it in > the FPU so the only general advantage to not using it is IO speed and data > size.
Take one of the little ray-tracers written in D from my site, test its running speed compiled with ldc, replace doubles with reals, and time it again. You will see a nice performance difference. LDC FP performance is not good if it doesn't use SSE registers. Bye, bearophile
