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module FarPath #( parameter size_in_mantissa = 24, //1.M
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module FarPath #( parameter size_in_mantissa = 24, //1.M
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parameter size_out_mantissa = 24,
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parameter size_out_mantissa = 24,
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parameter size_exponent = 8,
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parameter size_exponent = 8,
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parameter pipeline = 0,
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parameter pipeline = 0,
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parameter pipeline_pos = 0, // 8 bits
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parameter pipeline_pos = 0, // 8 bits
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parameter size_counter = 5, //log2(size_mantissa) + 1 = 5)
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parameter size_counter = 5, //log2(size_in_mantissa) + 1 = 5)
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parameter double_size_counter = size_counter + 1,
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parameter double_size_in_mantissa = size_in_mantissa + size_in_mantissa)
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parameter double_size_mantissa = size_in_mantissa + size_in_mantissa)
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( input [size_in_mantissa : 0] unnormalized_mantissa,
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input [size_in_mantissa - 1 : 0] inter_rounding_bits,
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( input eff_op,
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input [size_exponent : 0] exp_inter,
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input [size_in_mantissa-1 :0] m_a_number,
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input [size_in_mantissa-1 :0] m_b_number,
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input [size_exponent - 1 : 0] e_a_number,
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input [size_exponent - 1 : 0] e_b_number,
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output[size_out_mantissa-1:0] resulted_m_o,
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output[size_out_mantissa-1:0] resulted_m_o,
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output[size_exponent - 1 : 0] resulted_e_o);
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output[size_exponent - 1 : 0] resulted_e_o);
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wire [double_size_mantissa:0] unnormalized_mantissa;
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wire [size_exponent- 1 : 0] adjust_mantissa;
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wire [7:0] adjust_mantissa;
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wire [size_exponent- 1 : 0] unadjusted_exponent;
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wire [double_size_mantissa:0] normalized_mantissa;
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wire [double_size_in_mantissa:0] normalized_mantissa;
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wire dummy_bit;
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wire dummy_bit;
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//compute unnormalized_mantissa
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assign adjust_mantissa = unnormalized_mantissa[size_in_mantissa]? 2'd0 :
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assign unnormalized_mantissa = (eff_op)? ((m_a_number > m_b_number)? (m_a_number - m_b_number) : (m_b_number - m_a_number)) :
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unnormalized_mantissa[size_in_mantissa-1]? 2'd1 : 2'd2;
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m_a_number + m_b_number;
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assign adjust_mantissa = unnormalized_mantissa[double_size_mantissa]? 8'd0 :
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unnormalized_mantissa[double_size_mantissa-1]? 2'd1 : 8'd2;
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//compute shifting over unnormalized_mantissa
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//compute shifting over unnormalized_mantissa
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shifter #( .INPUT_SIZE(double_size_mantissa+1),
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shifter #( .INPUT_SIZE(double_size_in_mantissa+1),
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.SHIFT_SIZE(size_exponent),
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.SHIFT_SIZE(size_exponent),
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.OUTPUT_SIZE(double_size_mantissa+2),
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.OUTPUT_SIZE(double_size_in_mantissa+2),
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.DIRECTION(1'b1),
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.DIRECTION(1'b1),
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.PIPELINE(pipeline),
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.PIPELINE(pipeline),
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.POSITION(pipeline_pos))
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.POSITION(pipeline_pos))
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unnormalized_no_shifter_instance(.a(unnormalized_mantissa),
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unnormalized_no_shifter_instance(.a({unnormalized_mantissa, inter_rounding_bits}),
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.arith(1'b0),
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.arith(1'b0),
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.shft(adjust_mantissa),
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.shft(adjust_mantissa),
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.shifted_a({normalized_mantissa, dummy_bit}));
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.shifted_a({normalized_mantissa, dummy_bit}));
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//instantiate rounding_component
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//instantiate rounding_component
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rounding #( .SIZE_MOST_S_MANTISSA(size_out_mantissa),
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rounding #( .SIZE_MOST_S_MANTISSA(size_out_mantissa),
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.SIZE_LEAST_S_MANTISSA(size_out_mantissa + 2'd1))
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.SIZE_LEAST_S_MANTISSA(size_out_mantissa + 2'd1))
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rounding_instance( .unrounded_mantissa(normalized_mantissa[double_size_mantissa : double_size_mantissa - size_out_mantissa + 1]),
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rounding_instance( .unrounded_mantissa(normalized_mantissa[double_size_in_mantissa : double_size_in_mantissa - size_out_mantissa + 1]),
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.dummy_bits(normalized_mantissa[double_size_mantissa - size_out_mantissa: 0]),
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.dummy_bits(normalized_mantissa[double_size_in_mantissa - size_out_mantissa: 0]),
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.rounded_mantissa(resulted_m_o));
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.rounded_mantissa(resulted_m_o));
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assign resulted_e_o = (e_a_number > e_b_number)? (e_a_number + 1 - adjust_mantissa):(e_b_number + 1 - adjust_mantissa);
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assign unadjusted_exponent = exp_inter - adjust_mantissa;
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assign resulted_e_o = unadjusted_exponent + 1'b1;
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endmodule
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endmodule
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