Since recompiling of library with float may increase size of com file I've decided to implement ftoa function in my code instead. That solved use cases I care about.
Hello!
I tried to compile an example printTextGraphic.c in Fusion-c library and found a mistake in line 70:
CopyRamToVram(start_adr,&buff, 2048);
Obviously should be
CopyRamToVram(&buff, start_adr, 2048);