first verilog project
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digraph heron {
//node [shape=circle,regular=1,style=filled,fillcolor=white];
edge [arrowhead=odot];
graph [overlap=scale];
subgraph {
edge [weight=3];
C0 -> C1 -> C2 -> C3 -> C4 -> C5 -> C6 -> C7 -> C8 -> C9 -> C10 [minlen=3];
}
// variables & constants
mem_0 [label="mem[0]"];
mem_i [label="mem[i]"];
mem_i2 [label="mem[i]",shape="box"];
i [label="i"];
"1c" [label="1" ];
"1d" [label="1" ];
Finish [label="Finish"];
// operands
s_shift_1 [label=">> 1",];
i_lt_0 [label=">",];
// i <= mem[0]
mem_0 -> i:n [label="C0",style=dotted];
0 -> i_lt_0;
i -> i_lt_0;
{ rank=same; C0; i}
{ rank=same; C1; i_lt_0; }
// if (i <= mem[0]) ->
i_lt_0 -> mem_s_gte_1 [style=dotted, arrowhead=normal,label="True"];
// else
i_lt_0 -> Finish [style=dotted, arrowhead=normal,label="False"];
{ rank=same; C10; Finish;}
subgraph i_lt_0 {
mem_s_gte_1 [label=">"];
s_div_x [label="/",];
new_x [label="+",];
s_div_x_shift_1 [label=">> 1",];
x_shift_1 [label=">> 1",];
old_x_lte_new_x [label=">=",];
dec_i [label="-",];
comma_fix [label="<< Kommastellen/2"];
// (s > 1)
mem_i -> mem_s_gte_1;
"1d" -> mem_s_gte_1;
{ rank=same; C2; mem_s_gte_1}
// if (s > 1)
mem_s_gte_1 -> s_shift_1 [style=dotted,arrowhead=normal,label="True"];
// else
mem_s_gte_1 -> comma_fix [style=dotted,arrowhead=normal,label="False"];
subgraph if_mem_i_gte_1 {
// x = s >> 1
mem_i -> s_shift_1;
s_shift_1 -> x [style=dotted,arrowhead=normal,label="C2->C3"];
{ rank=same; C3; s_shift_1; x}
// (x >> 1)
x [shape="box"];
x -> x_shift_1;
// (s/x)
mem_i:ne -> s_div_x:ne;
x -> s_div_x:nw;
{ rank=same; C4; x_shift_1; s_div_x}
// ((s/x) >> 1)
s_div_x -> s_div_x_shift_1;
{ rank=same; C5; s_div_x_shift_1}
// (x >> 1) + ((s/x) >> 1);
x_shift_1 -> new_x;
s_div_x_shift_1 -> new_x;
{ rank=same; C6; new_x;}
// (old_x <= X)
x -> old_x_lte_new_x;
new_x -> old_x_lte_new_x;
new_x -> x [style=dotted,label="C7->C3 || C7->C8"];
x_2 [shape="box" label="x"];
{ rank=same; C7; old_x_lte_new_x;}
x_2 -> comma_fix;
{ rank=same; C8; comma_fix x_2}
// if (old_x <= X)
old_x_lte_new_x -> comma_fix [style=dotted,arrowhead=normal,label="True"];
// else
old_x_lte_new_x -> x [style=dotted,arrowhead=normal,label="False"];
comma_fix -> mem_i2 [label="C7->C8", style=dotted];
comma_fix -> dec_i [style=dotted, arrowhead=normal, label="True"];
"1c" -> dec_i;
i -> dec_i:ne;
dec_i:s -> i:s;
{ rank=same; C9; dec_i; mem_i2};
}
}
}