snprintf with format specifier "%.4g" seems not to work (xc1.42 + legacy lib) (moser)

I'm using xc1.42 with legacy lib and a PIC32EFM. I intended to use the "%.4g" format specifier with snprintf. However, this doesn't seem to work. Usually %g provides a mechanism that the value switches over from decimal representation (with %f) to scienti..