module __bfloat16__fma( input wire [15:0] a, input wire [15:0] b, input wire [15:0] c, output wire [15:0] out ); // lint_off MULTIPLY function automatic [15:0] umul16b_8b_x_8b (input reg [7:0] lhs, input reg [7:0] rhs); begin umul16b_8b_x_8b = lhs * rhs; end endfunction // lint_on MULTIPLY function automatic priority_sel_1b_2way (input reg [1:0] sel, input reg case0, input reg case1, input reg default_value); begin casez (sel) 2'b?1: begin priority_sel_1b_2way = case0; end 2'b10: begin priority_sel_1b_2way = case1; end 2'b00: begin priority_sel_1b_2way = default_value; end default: begin // Propagate X priority_sel_1b_2way = 1'dx; end endcase end endfunction wire [7:0] a_bexp__1; wire [7:0] literal_2021; wire [7:0] b_bexp__1; wire cancel__1; wire bnot__1; wire [6:0] a_fraction__1; wire [6:0] b_fraction__1; wire eq_2027; wire eq_2028; wire [7:0] a_significand__1; wire [7:0] b_significand__1; wire nor_2033; wire [8:0] add_2034; wire [15:0] umul_2035; wire [7:0] max_exp; wire [6:0] literal_2038; wire [15:0] full_product; wire eq_2042; wire eq_2043; wire eq_2044; wire eq_2045; wire [9:0] exp; wire [8:0] literal_2048; wire in_upper_binade; wire [9:0] exp__1; wire has_inf_arg; wire [9:0] result_exp__3; wire [9:0] result_exp__4; wire is_subnormal; wire has_0_arg; wire is_result_nan__1; wire [8:0] result_exp__5; wire [8:0] literal_2071; wire [7:0] c_bexp__2; wire [8:0] ab_bexp__2; wire [7:0] bnot__2; wire [9:0] ab_bexp_extended__1; wire [9:0] bnot_extended__2; wire [9:0] full_result; wire overflow_detected; wire nc; wire [8:0] narrowed_result; wire [8:0] ab_bexpor_mask__2; wire [15:0] result_fraction__5; wire [8:0] result; wire [15:0] result_fraction__6; wire [8:0] exp_difference; wire [15:0] result_fraction__7; wire [24:0] literal_2098; wire [8:0] rshift_ab; wire [6:0] c_fraction__2; wire [8:0] rshift_c; wire [15:0] ab_fraction__2; wire [24:0] shll_2104; wire [7:0] sign_ext_2106; wire [24:0] shll_2107; wire a_sign__1; wire b_sign__1; wire [15:0] literal_2117; wire [7:0] wide_c__3; wire result_sign__3; wire [24:0] wide_ab; wire [23:0] literal_2123; wire [24:0] wide_c__2; wire [24:0] shifted_ab; wire [24:0] sticky_ab; wire [24:0] shifted_c; wire [24:0] sticky_c; wire c_sign__2; wire ab_sign__2; wire greater_sign; wire [25:0] shifted_ab__1_squeezed; wire [25:0] shifted_c__1_squeezed; wire [25:0] shifted_ab__2_squeezed; wire [25:0] shifted_c__2_squeezed; wire [26:0] shifted_ab__2; wire [26:0] shifted_c__2; wire [26:0] sum_fraction; wire [25:0] abs_fraction__2; wire [25:0] reverse_2152; wire [26:0] one_hot_2153; wire [4:0] encode_2154; wire cancel__2; wire carry_bit__2; wire [5:0] concat_2158; wire [5:0] add_2163; wire [24:0] carry_fraction__1; wire [2:0] concat_2171; wire [24:0] carry_fraction__4; wire [24:0] cancel_fraction__2; wire [24:0] shifted_fraction; wire [16:0] normal_chunk; wire [16:0] half_of_extra; wire [1:0] half_way_chunk; wire [8:0] concat_2183; wire [8:0] add_2186; wire [8:0] rounded_fraction__1; wire [8:0] greater_exp; wire rounding_carry; wire [5:0] sub_2193; wire fraction_is_zero; wire [9:0] bexp_associative_element__1; wire [9:0] bexp_associative_element__4; wire [9:0] bexp__1; wire [9:0] bexp__2; wire eq_2207; wire eq_2208; wire eq_2209; wire eq_2210; wire [8:0] bexp__6; wire and_2215; wire is_operand_inf; wire and_reduce_2224; wire has_pos_inf; wire has_neg_inf; wire is_result_nan; wire result_sign; wire [6:0] result_fraction; wire result_sign__1; wire [6:0] result_fraction__3; wire [3:0] one_hot_2254; wire result_sign__2; wire [7:0] result_exp__2; wire [6:0] result_fraction__4; assign a_bexp__1 = a[14:7]; assign literal_2021 = 8'h00; assign b_bexp__1 = b[14:7]; assign cancel__1 = 1'h0; assign bnot__1 = 1'h1; assign a_fraction__1 = a[6:0]; assign b_fraction__1 = b[6:0]; assign eq_2027 = a_bexp__1 == literal_2021; assign eq_2028 = b_bexp__1 == literal_2021; assign a_significand__1 = {bnot__1, a_fraction__1}; assign b_significand__1 = {bnot__1, b_fraction__1}; assign nor_2033 = ~(eq_2027 | eq_2028); assign add_2034 = {cancel__1, a_bexp__1} + {cancel__1, b_bexp__1}; assign umul_2035 = umul16b_8b_x_8b(a_significand__1, b_significand__1); assign max_exp = 8'hff; assign literal_2038 = 7'h00; assign full_product = umul_2035 & {16{nor_2033}}; assign eq_2042 = a_bexp__1 == max_exp; assign eq_2043 = a_fraction__1 == literal_2038; assign eq_2044 = b_bexp__1 == max_exp; assign eq_2045 = b_fraction__1 == literal_2038; assign exp = {cancel__1, add_2034} + 10'h381; assign literal_2048 = 9'h000; assign in_upper_binade = full_product[15]; assign exp__1 = exp & {10{nor_2033}}; assign has_inf_arg = eq_2042 & eq_2043 | eq_2044 & eq_2045; assign result_exp__3 = exp__1 + {literal_2048, in_upper_binade}; assign result_exp__4 = has_inf_arg ? 10'h1ff : result_exp__3; assign is_subnormal = $signed(result_exp__4) <= $signed(10'h000); assign has_0_arg = eq_2027 | eq_2028; assign is_result_nan__1 = ~(~eq_2042 | eq_2043) | ~(~eq_2044 | eq_2045) | has_0_arg & has_inf_arg; assign result_exp__5 = result_exp__4[8:0] & {9{~is_subnormal}}; assign literal_2071 = 9'h1ff; assign c_bexp__2 = c[14:7]; assign ab_bexp__2 = is_result_nan__1 ? literal_2071 : result_exp__5; assign bnot__2 = ~c_bexp__2; assign ab_bexp_extended__1 = {cancel__1, ab_bexp__2}; assign bnot_extended__2 = {2'h1, bnot__2}; assign full_result = ab_bexp_extended__1 + bnot_extended__2; assign overflow_detected = full_result[9]; assign nc = ~overflow_detected; assign narrowed_result = full_result[8:0]; assign ab_bexpor_mask__2 = {9{nc}}; assign result_fraction__5 = in_upper_binade ? umul_2035 : {full_product[14:0], cancel__1}; assign result = narrowed_result ^ ab_bexpor_mask__2; assign result_fraction__6 = result_fraction__5 & {16{~has_inf_arg}}; assign exp_difference = result + {literal_2021, overflow_detected}; assign result_fraction__7 = (-result_exp__4[8:0] & {9{is_subnormal}}) >= 9'h010 ? 16'h0000 : result_fraction__6 >> (-result_exp__4[8:0] & {9{is_subnormal}}); assign literal_2098 = 25'h1ff_ffff; assign rshift_ab = exp_difference & ab_bexpor_mask__2; assign c_fraction__2 = c[6:0]; assign rshift_c = exp_difference & {9{overflow_detected}}; assign ab_fraction__2 = is_result_nan__1 ? 16'hc000 : result_fraction__7; assign shll_2104 = rshift_ab >= 9'h019 ? 25'h000_0000 : literal_2098 << rshift_ab; assign sign_ext_2106 = {8{c_bexp__2 != literal_2021}}; assign shll_2107 = rshift_c >= 9'h019 ? 25'h000_0000 : literal_2098 << rshift_c; assign a_sign__1 = a[15:15]; assign b_sign__1 = b[15:15]; assign literal_2117 = 16'h0000; assign wide_c__3 = {bnot__1, c_fraction__2} & sign_ext_2106; assign result_sign__3 = a_sign__1 ^ b_sign__1; assign wide_ab = {ab_fraction__2, literal_2048}; assign literal_2123 = 24'h00_0000; assign wide_c__2 = {wide_c__3, 17'h0_0000}; assign shifted_ab = rshift_ab >= 9'h019 ? 25'h000_0000 : wide_ab >> rshift_ab; assign sticky_ab = {literal_2123, ~(~ab_fraction__2 | shll_2104[24:9]) != literal_2117}; assign shifted_c = rshift_c >= 9'h019 ? 25'h000_0000 : wide_c__2 >> rshift_c; assign sticky_c = {literal_2123, ~({cancel__1, ~c_fraction__2} | ~sign_ext_2106 | shll_2107[24:17]) != literal_2021}; assign c_sign__2 = c[15:15]; assign ab_sign__2 = ~(is_result_nan__1 | ~result_sign__3); assign greater_sign = overflow_detected ? ab_sign__2 : c_sign__2; assign shifted_ab__1_squeezed = {cancel__1, shifted_ab | sticky_ab}; assign shifted_c__1_squeezed = {cancel__1, shifted_c | sticky_c}; assign shifted_ab__2_squeezed = ab_sign__2 ^ greater_sign ? -shifted_ab__1_squeezed : shifted_ab__1_squeezed; assign shifted_c__2_squeezed = c_sign__2 ^ greater_sign ? -shifted_c__1_squeezed : shifted_c__1_squeezed; assign shifted_ab__2 = {{1{shifted_ab__2_squeezed[25]}}, shifted_ab__2_squeezed}; assign shifted_c__2 = {{1{shifted_c__2_squeezed[25]}}, shifted_c__2_squeezed}; assign sum_fraction = shifted_ab__2 + shifted_c__2; assign abs_fraction__2 = sum_fraction[26] ? -sum_fraction[25:0] : sum_fraction[25:0]; assign reverse_2152 = {abs_fraction__2[0], abs_fraction__2[1], abs_fraction__2[2], abs_fraction__2[3], abs_fraction__2[4], abs_fraction__2[5], abs_fraction__2[6], abs_fraction__2[7], abs_fraction__2[8], abs_fraction__2[9], abs_fraction__2[10], abs_fraction__2[11], abs_fraction__2[12], abs_fraction__2[13], abs_fraction__2[14], abs_fraction__2[15], abs_fraction__2[16], abs_fraction__2[17], abs_fraction__2[18], abs_fraction__2[19], abs_fraction__2[20], abs_fraction__2[21], abs_fraction__2[22], abs_fraction__2[23], abs_fraction__2[24], abs_fraction__2[25]}; assign one_hot_2153 = {reverse_2152[25:0] == 26'h000_0000, reverse_2152[25] && reverse_2152[24:0] == 25'h000_0000, reverse_2152[24] && reverse_2152[23:0] == 24'h00_0000, reverse_2152[23] && reverse_2152[22:0] == 23'h00_0000, reverse_2152[22] && reverse_2152[21:0] == 22'h00_0000, reverse_2152[21] && reverse_2152[20:0] == 21'h00_0000, reverse_2152[20] && reverse_2152[19:0] == 20'h0_0000, reverse_2152[19] && reverse_2152[18:0] == 19'h0_0000, reverse_2152[18] && reverse_2152[17:0] == 18'h0_0000, reverse_2152[17] && reverse_2152[16:0] == 17'h0_0000, reverse_2152[16] && reverse_2152[15:0] == 16'h0000, reverse_2152[15] && reverse_2152[14:0] == 15'h0000, reverse_2152[14] && reverse_2152[13:0] == 14'h0000, reverse_2152[13] && reverse_2152[12:0] == 13'h0000, reverse_2152[12] && reverse_2152[11:0] == 12'h000, reverse_2152[11] && reverse_2152[10:0] == 11'h000, reverse_2152[10] && reverse_2152[9:0] == 10'h000, reverse_2152[9] && reverse_2152[8:0] == 9'h000, reverse_2152[8] && reverse_2152[7:0] == 8'h00, reverse_2152[7] && reverse_2152[6:0] == 7'h00, reverse_2152[6] && reverse_2152[5:0] == 6'h00, reverse_2152[5] && reverse_2152[4:0] == 5'h00, reverse_2152[4] && reverse_2152[3:0] == 4'h0, reverse_2152[3] && reverse_2152[2:0] == 3'h0, reverse_2152[2] && reverse_2152[1:0] == 2'h0, reverse_2152[1] && !reverse_2152[0], reverse_2152[0]}; assign encode_2154 = {one_hot_2153[16] | one_hot_2153[17] | one_hot_2153[18] | one_hot_2153[19] | one_hot_2153[20] | one_hot_2153[21] | one_hot_2153[22] | one_hot_2153[23] | one_hot_2153[24] | one_hot_2153[25] | one_hot_2153[26], one_hot_2153[8] | one_hot_2153[9] | one_hot_2153[10] | one_hot_2153[11] | one_hot_2153[12] | one_hot_2153[13] | one_hot_2153[14] | one_hot_2153[15] | one_hot_2153[24] | one_hot_2153[25] | one_hot_2153[26], one_hot_2153[4] | one_hot_2153[5] | one_hot_2153[6] | one_hot_2153[7] | one_hot_2153[12] | one_hot_2153[13] | one_hot_2153[14] | one_hot_2153[15] | one_hot_2153[20] | one_hot_2153[21] | one_hot_2153[22] | one_hot_2153[23], one_hot_2153[2] | one_hot_2153[3] | one_hot_2153[6] | one_hot_2153[7] | one_hot_2153[10] | one_hot_2153[11] | one_hot_2153[14] | one_hot_2153[15] | one_hot_2153[18] | one_hot_2153[19] | one_hot_2153[22] | one_hot_2153[23] | one_hot_2153[26], one_hot_2153[1] | one_hot_2153[3] | one_hot_2153[5] | one_hot_2153[7] | one_hot_2153[9] | one_hot_2153[11] | one_hot_2153[13] | one_hot_2153[15] | one_hot_2153[17] | one_hot_2153[19] | one_hot_2153[21] | one_hot_2153[23] | one_hot_2153[25]}; assign cancel__2 = |encode_2154[4:1]; assign carry_bit__2 = abs_fraction__2[25]; assign concat_2158 = {cancel__1, encode_2154}; assign add_2163 = concat_2158 + 6'h3f; assign carry_fraction__1 = abs_fraction__2[25:1]; assign concat_2171 = {~(carry_bit__2 | cancel__2), ~(carry_bit__2 | ~cancel__2), ~(~carry_bit__2 | cancel__2)}; assign carry_fraction__4 = carry_fraction__1 | {literal_2123, abs_fraction__2[0]}; assign cancel_fraction__2 = {{20{add_2163[5]}}, add_2163} >= 26'h000_0019 ? 25'h000_0000 : abs_fraction__2[24:0] << {{20{add_2163[5]}}, add_2163}; assign shifted_fraction = carry_fraction__4 & {25{concat_2171[0]}} | cancel_fraction__2 & {25{concat_2171[1]}} | abs_fraction__2[24:0] & {25{concat_2171[2]}}; assign normal_chunk = shifted_fraction[16:0]; assign half_of_extra = 17'h1_0000; assign half_way_chunk = shifted_fraction[17:16]; assign concat_2183 = {cancel__1, shifted_fraction[24:17]}; assign add_2186 = concat_2183 + 9'h001; assign rounded_fraction__1 = normal_chunk > half_of_extra | half_way_chunk == 2'h3 ? add_2186 : concat_2183; assign greater_exp = overflow_detected ? ab_bexp__2 : {cancel__1, c_bexp__2}; assign rounding_carry = rounded_fraction__1[8]; assign sub_2193 = 6'h01 - concat_2158; assign fraction_is_zero = sum_fraction == 27'h000_0000; assign bexp_associative_element__1 = {{4{sub_2193[5]}}, sub_2193}; assign bexp_associative_element__4 = {cancel__1, greater_exp} + {literal_2048, rounding_carry}; assign bexp__1 = bexp_associative_element__1 + bexp_associative_element__4; assign bexp__2 = bexp__1 & {10{~fraction_is_zero}}; assign eq_2207 = ab_bexp__2 == literal_2071; assign eq_2208 = ab_fraction__2 == literal_2117; assign eq_2209 = c_bexp__2 == max_exp; assign eq_2210 = c_fraction__2 == literal_2038; assign bexp__6 = bexp__2[8:0] & {9{~bexp__2[9]}}; assign and_2215 = eq_2207 & eq_2208; assign is_operand_inf = and_2215 | eq_2209 & eq_2210; assign and_reduce_2224 = &bexp__6[7:0]; assign has_pos_inf = ~(~(eq_2207 & eq_2208) | ab_sign__2) | ~(~eq_2209 | ~eq_2210 | c_sign__2); assign has_neg_inf = and_2215 & ab_sign__2 | eq_2209 & eq_2210 & c_sign__2; assign is_result_nan = ~(~eq_2207 | eq_2208) | ~(~eq_2209 | eq_2210) | has_pos_inf & has_neg_inf; assign result_sign = priority_sel_1b_2way({sum_fraction[26], fraction_is_zero}, cancel__1, ~greater_sign, greater_sign); assign result_fraction = rounded_fraction__1[6:0]; assign result_sign__1 = is_operand_inf ? ~has_pos_inf : result_sign; assign result_fraction__3 = result_fraction & {7{~(is_operand_inf | bexp__6[8] | and_reduce_2224 | bexp__6 == literal_2048)}}; assign one_hot_2254 = {concat_2171[2:0] == 3'h0, concat_2171[2] && concat_2171[1:0] == 2'h0, concat_2171[1] && !concat_2171[0], concat_2171[0]}; assign result_sign__2 = ~is_result_nan & result_sign__1; assign result_exp__2 = is_result_nan | is_operand_inf | bexp__6[8] | and_reduce_2224 ? max_exp : bexp__6[7:0]; assign result_fraction__4 = is_result_nan ? 7'h08 : result_fraction__3; assign out = {result_sign__2, result_exp__2, result_fraction__4}; endmodule