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homer.hsin |
/*
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* Copyright 2013, Homer Hsing <homer.hsing@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* round constant (2 in 1 ~ ~) */
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module rconst2in1(i, rc1, rc2);
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input [11:0] i;
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output [63:0] rc1, rc2;
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reg [63:0] rc1, rc2;
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always @ (i)
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begin
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rc1 = 0;
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rc1[0] = i[0] | i[2] | i[3] | i[5] | i[6] | i[7] | i[10] | i[11];
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rc1[1] = i[1] | i[2] | i[4] | i[6] | i[8] | i[9];
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rc1[3] = i[1] | i[2] | i[4] | i[5] | i[6] | i[7] | i[9];
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rc1[7] = i[1] | i[2] | i[3] | i[4] | i[6] | i[7] | i[10];
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rc1[15] = i[1] | i[2] | i[3] | i[5] | i[6] | i[7] | i[8] | i[9] | i[10];
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rc1[31] = i[3] | i[5] | i[6] | i[10] | i[11];
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rc1[63] = i[1] | i[3] | i[7] | i[8] | i[10];
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end
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always @ (i)
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begin
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rc2 = 0;
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rc2[0] = i[2] | i[3] | i[6] | i[7];
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rc2[1] = i[0] | i[5] | i[6] | i[7] | i[9];
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rc2[3] = i[3] | i[4] | i[5] | i[6] | i[9] | i[11];
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rc2[7] = i[0] | i[4] | i[6] | i[8] | i[10];
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rc2[15] = i[0] | i[1] | i[3] | i[7] | i[10] | i[11];
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rc2[31] = i[1] | i[2] | i[5] | i[9] | i[11];
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rc2[63] = i[1] | i[3] | i[6] | i[7] | i[8] | i[9] | i[10] | i[11];
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end
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endmodule
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