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module gfx_float_lane
(
input logic clk,
input gfx::float a,
b,
output gfx::float q
);
import gfx::*;
logic slow_fmul;
float_round q_fmul;
float_special a_special, b_special;
function float_special front_flags(float in);
front_flags.val = in;
front_flags.exp_max = &in.exp;
front_flags.exp_min = ~|in.exp;
front_flags.mant_zero = ~|in.mant;
endfunction
function logic is_special(float_special in);
is_special = in.exp_max | (in.exp_min & ~in.mant_zero);
endfunction
gfx_fmul_lane fmul
(
.clk(clk),
.a(a_special),
.b(b_special),
.q(q_fmul),
.slow_in(slow_fmul)
);
gfx_round_lane round
(
.clk(clk),
.in(q_fmul),
.out(q)
);
always_comb begin
slow_fmul = is_special(a_special) | is_special(b_special);
end
always_ff @(posedge clk) begin
a_special <= front_flags(a);
b_special <= front_flags(b);
end
endmodule
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