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void collide_and_stream( ${float_type}* f_next,
const ${float_type}* f_prev,
std::size_t gid)
{
${float_type}* preshifted_f_next = f_next + ${layout.cell_preshift('gid')};
const ${float_type}* preshifted_f_prev = f_prev + ${layout.cell_preshift('gid')};
% for i, c_i in enumerate(descriptor.c):
const ${float_type} f_curr_${i} = preshifted_f_prev[${layout.pop_offset(i) + layout.neighbor_offset(-c_i)}];
% endfor
% for i, expr in enumerate(moments_subexpr):
const ${float_type} ${expr[0]} = ${ccode(expr[1])};
% endfor
% for i, expr in enumerate(moments_assignment):
${float_type} ${ccode(expr)}
% endfor
% for i, expr in enumerate(collision_subexpr):
const ${float_type} ${expr[0]} = ${ccode(expr[1])};
% endfor
% for i, expr in enumerate(collision_assignment):
const ${float_type} ${ccode(expr)}
% endfor
% for i, expr in enumerate(collision_assignment):
preshifted_f_next[${layout.pop_offset(i)}] = f_next_${i};
% endfor
}
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