volume_dat2.c reading sphere_div4.dat 
status=0, zmax=1, points=1026, polys=2048 

xmin=-1.000000, xmax=1.000000, ymin=-1.000000, ymax=1.000000 
zmin=-1.000000, zmax=1.000000 
enclosing area= 24, enclosing volume= 8 

final total area = 12.5264, total volume = 4.16419