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Diffstat (limited to 'src/systemc/tests/systemc/datatypes/int/arith/arith10/arith10.cpp')
| -rw-r--r-- | src/systemc/tests/systemc/datatypes/int/arith/arith10/arith10.cpp | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/src/systemc/tests/systemc/datatypes/int/arith/arith10/arith10.cpp b/src/systemc/tests/systemc/datatypes/int/arith/arith10/arith10.cpp new file mode 100644 index 000000000..e649cb2a3 --- /dev/null +++ b/src/systemc/tests/systemc/datatypes/int/arith/arith10/arith10.cpp @@ -0,0 +1,119 @@ +/***************************************************************************** + + 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 + + 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. + + *****************************************************************************/ + +/***************************************************************************** + + 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; +} |