c
c
c =====================================================
subroutine ic(maxmx,maxmy,meqn,mbc,mx,my,x,y,dx,dy,q)
c =====================================================
implicit double precision (a-h,o-z)
c
include "cuser.i"
c
dimension q(meqn,1-mbc:maxmx+mbc, 1-mbc:maxmy+mbc)
dimension x(1-mbc:maxmx+mbc),y(1-mbc:maxmy+mbc)
c
c
c # circle of high-density gas
c
idisc = 2
r0 = 0.2d0
x0 = .3d0
y0 = .7d0
rhol = 5.d0
rhor = 1.d0
pl = 5.d0
pr = 1.d0
do 60 i = 1, mx
do 60 j = 1, my
call cellave(x(i)-dx/2.d0,y(j)-dy/2.d0,dx,dy,wl)
q(1,i,j) = wl*rhol + (1.d0-wl)*rhor
q(2,i,j) = 0.d0
q(3,i,j) = 0.d0
q(4,i,j) = wl*(pl/gamma1) + (1.d0-wl)*(pr/gamma1)
60 continue
return
end