| /***************************************************************************** |
| |
| Licensed to Accellera Systems Initiative Inc. (Accellera) under one or |
| more contributor license agreements. See the NOTICE file distributed |
| with this work for additional information regarding copyright ownership. |
| Accellera licenses this file to you under the Apache License, Version 2.0 |
| (the "License"); you may not use this file except in compliance with the |
| License. You may obtain a copy of the License at |
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| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| implied. See the License for the specific language governing |
| permissions and limitations under the License. |
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| *****************************************************************************/ |
| |
| /***************************************************************************** |
| |
| arith10.cpp -- |
| |
| Original Author: Martin Janssen, Synopsys, Inc., 2002-02-15 |
| |
| *****************************************************************************/ |
| |
| /***************************************************************************** |
| |
| MODIFICATION LOG - modifiers, enter your name, affiliation, date and |
| changes you are making here. |
| |
| Name, Affiliation, Date: |
| Description of Modification: |
| |
| *****************************************************************************/ |
| |
| #include <stdlib.h> |
| #include "systemc.h" |
| #include "isaac.h" |
| |
| QTIsaac<8> rng; // Platform independent random number generator. |
| |
| int |
| sc_main( int argc, char* argv[] ) |
| { |
| signed int vali[5] = { 0, 1, -1, 7, -8 }; |
| signed int valj[5] = { 0, 1, -1, 7, -8 }; |
| |
| for (int i = 3; i < 32; ++i) { |
| for (int j = 3; j < 32; ++j) { |
| cout << "i = " << i << ", j = " << j << endl; |
| |
| sc_signed x(i); |
| sc_signed y(j); |
| sc_signed z(65), q(65); |
| |
| vali[3] = (1 << (i - 1)) - 1; |
| vali[4] = - (1 << (i - 1)); |
| |
| valj[3] = (1 << (j - 1)) - 1; |
| valj[4] = - (1 << (j - 1)); |
| |
| for (int ii = 0; ii < 100; ++ii) { |
| for (int jj = 0; jj < 100; ++jj) { |
| signed int qi = (ii < 5) ? vali[ii] : (rng.rand() & ((1 << i) - 1)); |
| signed int qj = (jj < 5) ? valj[jj] : (rng.rand() & ((1 << j) - 1)); |
| |
| if (qi & (1 << (i - 1))) { |
| qi = (qi << (32 - i)) >> (32 - i); |
| } |
| if (qj & (1 << (j - 1))) { |
| qj = (qj << (32 - j)) >> (32 - j); |
| } |
| |
| x = qi; |
| y = qj; |
| z = x * y; |
| sc_assert( static_cast<sc_bigint<32> >( z.range(31,0) ) == |
| (qi * qj) ); |
| bool s; |
| s = ((x < 0) != (y < 0)); |
| sc_signed x2(i+1); |
| x2 = x; |
| if (x < 0) { |
| x2 = - x; |
| } |
| sc_signed y2(j+1); |
| y2 = y; |
| if (y < 0) { |
| y2 = - y; |
| } |
| |
| sc_unsigned xhi(16), xlo(16); |
| sc_unsigned yhi(16), ylo(16); |
| sc_unsigned zero(16); |
| zero = 0; |
| xlo = i > 14 ? x2.range(15,0) : x2.range(i,0); |
| xhi = i > 15 ? x2.range(i,16) : zero; |
| ylo = j > 14 ? y2.range(15,0) : y2.range(j,0); |
| yhi = j > 15 ? y2.range(j,16) : zero; |
| q = (xlo * ylo) + |
| (xhi * ylo + xlo * yhi) * 65536 + |
| ((xhi * yhi) * 65536) * 65536; |
| if (s) |
| q = - q; |
| if (z.range(63,0) != q.range(63,0)) { |
| cout << "xlo = " << xlo << endl; |
| cout << "xhi = " << xhi << endl; |
| cout << "ylo = " << ylo << endl; |
| cout << "yhi = " << yhi << endl; |
| sc_assert(false); |
| } |
| } |
| } |
| } |
| } |
| return 0; |
| } |