Synopsis
		sfhyperdif > out.rsf dinit=dinit.rsf dtrue=dtrue.rsf wanttrue=n wantinit=n nt= dt= ox= nx= dx= type=

\partial(u)/\partial(t)+a(x,t)\partial(u)/\partial(x), 0unlimited,
u(x,0)=f(x).

Parameters
		file dinit= auxiliary output file name   float dt= temporal sampling   file dtrue= auxiliary output file name   float dx= spatial sampling   int nt= number of temporal points   int nx= number of spatial points   float ox= spatial starting point   string type= [upwind, friedrichs, wendroff] get the type for solving hyperbola partial differential equation, the default is upwind   bool wantinit=n [y/n] if want initial value. y: want, n: don't want.   bool wanttrue=n [y/n] if want true solution. y: want, n: don't want.