| /***************************************************************************** |
| |
| 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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| *****************************************************************************/ |
| |
| /***************************************************************************** |
| |
| arith09.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[] ) |
| { |
| unsigned int vali[5] = { 0, 1, (unsigned)-1, 7, (unsigned)-8 }; |
| unsigned int valj[5] = { 0, 1, (unsigned)-1, 7, (unsigned)-8 }; |
| |
| for (int i = 3; i < 32; ++i) { |
| for (int j = 3; j < 32; ++j) { |
| cout << "i = " << i << ", j = " << j << endl; |
| |
| sc_unsigned x(i); |
| sc_unsigned y(j); |
| sc_unsigned z(64), q(64); |
| |
| 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) { |
| unsigned qi = (ii < 5) ? vali[ii] : |
| (rng.rand() & ((1 << i) - 1)); |
| unsigned 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( (sc_unsigned)( z.range(31,0) ) == |
| (qi * qj) ); |
| if ( i < 17 ) |
| { |
| if ( j < 17 ) // (i < 17) |
| { |
| q = (x.range(i-1,0) * y.range(j-1,0)); |
| } |
| else // (j >= 17) (i < 17) |
| { |
| q = (x.range(i-1,0) * y.range(15,0)) + |
| ( x.range(i-1,0) * y.range(j-1,16) ) * 65536; |
| } |
| } |
| else |
| { |
| if ( j < 17 ) // (i >= 17) |
| { |
| q = (x.range(15,0) * y.range(j-1,0)) + |
| (x.range(i-1,16) * y.range(j-1,0)) * 65536; |
| } |
| else // (j >= 17) (i >= 17) |
| { |
| q = (x.range(15,0) * y.range(15,0)) + |
| (x.range(i-1,16) * y.range(15,0) + |
| x.range(15,0) * y.range(j-1,16)) * 65536 + |
| ((x.range(i-1,16) * y.range(j-1,16) * 65536) |
| * 65536); |
| } |
| } |
| sc_assert(z == q); |
| |
| if (y != 0) { |
| z /= y; |
| sc_assert(z == x); |
| } |
| } |
| } |
| } |
| } |
| return 0; |
| } |