c
c =========================================================
subroutine flx1(maxmx,meqn,mbc,mx,q,maux,aux,f)
c =========================================================
c
c # Flux-function for the one-dimensional Euler equations.
c
c # Copyright (C) 2002 Ralf Deiterding
c # Brandenburgische Universitaet Cottbus
c
c # Copyright (C) 2003-2007 California Institute of Technology
c # Ralf Deiterding, ralf@amroc.net
c
implicit double precision (a-h,o-z)
dimension q(1-mbc:maxmx+mbc, meqn)
dimension aux(1-mbc:maxmx+mbc, maux)
dimension f(1-mbc:maxmx+mbc, meqn)
common /param/ gamma,gamma1
c
do i=1-mbc,mx+mbc
u = q(i,2)/q(i,1)
p = gamma1*(q(i,3) - 0.5d0*q(i,1)*u**2)
f(i,1) = q(i,2)
f(i,2) = u*q(i,2)+p
f(i,3) = u*(q(i,3)+p)
enddo
c
return
end