| Line 24... |
Line 24... |
parameter size_counter = 5, //log2(size_mantissa) + 1 = 5)
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parameter size_counter = 5, //log2(size_mantissa) + 1 = 5)
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parameter [size_exception_field - 1 : 0] zero = 0, //00
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parameter [size_exception_field - 1 : 0] zero = 0, //00
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parameter [size_exception_field - 1 : 0] normal_number= 1, //01
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parameter [size_exception_field - 1 : 0] normal_number= 1, //01
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parameter [size_exception_field - 1 : 0] infinity = 2, //10
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parameter [size_exception_field - 1 : 0] infinity = 2, //10
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parameter [size_exception_field - 1 : 0] NaN = 3, //11
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parameter [size_exception_field - 1 : 0] NaN = 3, //11
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parameter [1 : 0] FP_operation = 0,
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parameter [1 : 0] FP_to_int = 1,
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parameter [1 : 0] int_operation = 3,
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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 double_size_mantissa = size_mantissa + size_mantissa,
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parameter double_size_mantissa = size_mantissa + size_mantissa,
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parameter double_size_counter = size_counter + 1,
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parameter double_size_counter = size_counter + 1,
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parameter size = size_mantissa + size_exponent + size_exception_field)
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parameter size = size_mantissa + size_exponent + size_exception_field)
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( input sub,
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( input [1:0] conversion,
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input sub,
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input [size - 1 : 0] a_number_i,
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input [size - 1 : 0] a_number_i,
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input [size - 1 : 0] b_number_i,
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input [size - 1 : 0] b_number_i,
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output[size - 1 : 0] resulted_number_o);
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output[size - 1 : 0] resulted_number_o);
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wire [size_exception_field - 1 : 0] sp_case_a_number, sp_case_b_number;
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wire [size_exception_field - 1 : 0] sp_case_a_number, sp_case_b_number;
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| Line 81... |
Line 86... |
//set shifter always on m_b_number
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//set shifter always on m_b_number
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assign {m_a_number, m_b_number} = (b_greater_exponent[size_exponent])?
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assign {m_a_number, m_b_number} = (b_greater_exponent[size_exponent])?
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{{1'b1, a_number_i[size_mantissa - 2 :0]}, {1'b1, b_number_i[size_mantissa - 2 :0]}} :
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{{1'b1, a_number_i[size_mantissa - 2 :0]}, {1'b1, b_number_i[size_mantissa - 2 :0]}} :
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{{1'b1, b_number_i[size_mantissa - 2 :0]}, {1'b1, a_number_i[size_mantissa - 2 :0]}};
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{{1'b1, b_number_i[size_mantissa - 2 :0]}, {1'b1, a_number_i[size_mantissa - 2 :0]}};
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//shift m_b_number
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shifter #( .INPUT_SIZE(size_mantissa),
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.SHIFT_SIZE(size_exponent),
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.OUTPUT_SIZE(double_size_mantissa),
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.DIRECTION(1'b0), //0=right, 1=left
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.PIPELINE(pipeline),
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.POSITION(pipeline_pos))
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m_b_shifter_instance( .a(m_b_number),//mantissa
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.arith(1'b0),//logical shift
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.shft(exp_difference),
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.shifted_a({shifted_m_b, initial_rounding_bits}));
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//istantiate effective_operation_component
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effective_op effective_op_instance( .a_sign(s_a_number), .b_sign(s_b_number), .sub(sub), .eff_op(eff_op));
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effective_op effective_op_instance( .a_sign(s_a_number), .b_sign(s_b_number), .sub(sub), .eff_op(eff_op));
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//compute unnormalized_mantissa
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assign adder_mantissa = (eff_op)? ({1'b0, m_a_number} - {1'b0, shifted_m_b}) : ({1'b0, m_a_number} + {1'b0, shifted_m_b});
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assign {unnormalized_mantissa, inter_rounding_bits} =
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(adder_mantissa[size_mantissa + 1])? ({~adder_mantissa[size_mantissa : 0], ~initial_rounding_bits}) :
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({adder_mantissa[size_mantissa : 0], initial_rounding_bits});
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//instantiate FarPath component
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//instantiate FarPath component
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FarPath #( .size_in_mantissa(size_mantissa),
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FarPath #( .size_in_mantissa(size_mantissa),
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.size_out_mantissa(size_mantissa),
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.size_out_mantissa(size_mantissa),
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.size_exponent(size_exponent),
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.size_exponent(size_exponent),
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.pipeline(pipeline),
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.pipeline(pipeline),
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.pipeline_pos(pipeline_pos),
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.pipeline_pos(pipeline_pos),
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.size_counter(size_counter),
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.size_counter(size_counter),
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.double_size_in_mantissa(double_size_mantissa))
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.double_size_in_mantissa(double_size_mantissa))
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FarPath_instance ( .unnormalized_mantissa(unnormalized_mantissa),
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FarPath_instance ( .m_a_number(m_a_number),
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.inter_rounding_bits(inter_rounding_bits),
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.m_b_number(m_b_number),
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.eff_op(eff_op),
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.exp_difference(exp_difference),
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.exp_inter(exp_inter),
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.exp_inter(exp_inter),
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.resulted_m_o(fp_resulted_m_o),
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.resulted_m_o(fp_resulted_m_o),
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.resulted_e_o(fp_resulted_e_o));
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.resulted_e_o(fp_resulted_e_o));
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//instantiate ClosePath component
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//instantiate ClosePath component
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| Line 125... |
Line 113... |
.size_exponent(size_exponent),
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.size_exponent(size_exponent),
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.pipeline(pipeline),
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.pipeline(pipeline),
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.pipeline_pos(pipeline_pos),
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.pipeline_pos(pipeline_pos),
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.size_counter(size_counter),
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.size_counter(size_counter),
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.double_size_in_mantissa(double_size_mantissa))
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.double_size_in_mantissa(double_size_mantissa))
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ClosePath_instance( .unnormalized_mantissa(unnormalized_mantissa),
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ClosePath_instance( .m_a_number(m_a_number),
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.inter_rounding_bits(inter_rounding_bits),
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.m_b_number(m_b_number),
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.exp_difference(exp_difference[0]),
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.exp_inter(exp_inter),
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.exp_inter(exp_inter),
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.resulted_m_o(cp_resulted_m_o),
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.resulted_m_o(cp_resulted_m_o),
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.resulted_e_o(cp_resulted_e_o));
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.resulted_e_o(cp_resulted_e_o),
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.ovf(ovf));
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//compute exception_field
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//compute exception_field
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special_cases #( .size_exception_field(size_exception_field),
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special_cases #( .size_exception_field(size_exception_field),
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.zero(zero),
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.zero(zero),
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.normal_number(normal_number),
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.normal_number(normal_number),
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| Line 142... |
Line 132... |
special_cases_instance( .sp_case_a_number(sp_case_a_number),
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special_cases_instance( .sp_case_a_number(sp_case_a_number),
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.sp_case_b_number(sp_case_b_number),
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.sp_case_b_number(sp_case_b_number),
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.sp_case_result_o(resulted_exception_field));
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.sp_case_result_o(resulted_exception_field));
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//set zero_flag in case of equal numbers
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//set zero_flag in case of equal numbers
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assign zero_flag = (exp_difference > 1)? ~(|fp_resulted_m_o) : ~(|cp_resulted_m_o);
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assign zero_flag = (exp_difference > 1 | !eff_op)? ~(|fp_resulted_m_o) : ~(|cp_resulted_m_o);
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assign resulted_sign = (eff_op)?
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assign resulted_sign = (exp_difference > 1 | !eff_op)? (!a_greater_exponent[size_exponent]? s_a_number : s_b_number) : ~ovf;
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(!a_greater_exponent[size_exponent]? (!b_greater_exponent[size_exponent]? ~adder_mantissa[size_mantissa+1] : s_a_number) : ~s_b_number) :
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s_a_number;
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assign resulted_number_o = (zero_flag)? {size{1'b0}} :
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assign resulted_number_o = (zero_flag)? {size{1'b0}} :
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(exp_difference > 1)? {resulted_exception_field, resulted_sign, fp_resulted_e_o, fp_resulted_m_o[size_mantissa-2 : 0]}:
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(exp_difference > 1 | !eff_op)? {resulted_exception_field, resulted_sign, fp_resulted_e_o, fp_resulted_m_o[size_mantissa-2 : 0]}:
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{resulted_exception_field, resulted_sign, cp_resulted_e_o, cp_resulted_m_o[size_mantissa-2 : 0]};
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{resulted_exception_field, resulted_sign, cp_resulted_e_o, cp_resulted_m_o[size_mantissa-2 : 0]};
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endmodule
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endmodule
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No newline at end of file
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No newline at end of file
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