diff options
Diffstat (limited to 'ext/systemc/src/sysc/datatypes/int/sc_nbdefs.cpp')
-rw-r--r-- | ext/systemc/src/sysc/datatypes/int/sc_nbdefs.cpp | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/ext/systemc/src/sysc/datatypes/int/sc_nbdefs.cpp b/ext/systemc/src/sysc/datatypes/int/sc_nbdefs.cpp new file mode 100644 index 000000000..48f2d39de --- /dev/null +++ b/ext/systemc/src/sysc/datatypes/int/sc_nbdefs.cpp @@ -0,0 +1,93 @@ +/***************************************************************************** + + 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. + + *****************************************************************************/ + +/***************************************************************************** + + sc_nbdefs.h -- Top level header file for arbitrary precision signed/unsigned + arithmetic. This file defines all the constants needed. + + Original Author: Ali Dasdan, Synopsys, Inc. + + *****************************************************************************/ + +/***************************************************************************** + + MODIFICATION LOG - modifiers, enter your name, affiliation, date and + changes you are making here. + + Name, Affiliation, Date: + Description of Modification: + + *****************************************************************************/ + + +// $Log: sc_nbdefs.cpp,v $ +// Revision 1.3 2011/02/18 20:19:15 acg +// Andy Goodrich: updating Copyright notice. +// +// Revision 1.2 2009/05/22 16:06:29 acg +// Andy Goodrich: process control updates. +// +// Revision 1.1.1.1 2006/12/15 20:20:05 acg +// SystemC 2.3 +// +// Revision 1.3 2006/01/13 18:49:32 acg +// Added $Log command so that CVS check in comments are reproduced in the +// source. +// + +#include "sysc/datatypes/int/sc_nbdefs.h" + + +namespace sc_dt +{ + +#ifdef SC_MAX_NBITS +const int MAX_NDIGITS = DIV_CEIL(SC_MAX_NBITS) + 2; +// Consider a number with x bits another with y bits. The maximum +// number of bits happens when we multiply them. The result will have +// (x + y) bits. Assume that x + y <= SC_MAX_NBITS. Then, DIV_CEIL(x) + +// DIV_CEIL(y) <= DIV_CEIL(SC_MAX_NBITS) + 2. This is the reason for +2 +// above. With this change, MAX_NDIGITS must be enough to hold the +// result of any operation. +#endif + +// Support for the long long type. This type is not in the standard +// but is usually supported by compilers. +#if !defined(_WIN32) || defined(__MINGW32__) +const uint64 UINT64_ZERO = 0ULL; +const uint64 UINT64_ONE = 1ULL; +const uint64 UINT64_32ONES = 0x00000000ffffffffULL; +#else +const uint64 UINT64_ZERO = 0i64; +const uint64 UINT64_ONE = 1i64; +const uint64 UINT64_32ONES = 0x00000000ffffffffi64; +#endif + +const small_type NB_DEFAULT_BASE = SC_DEC; + +#ifndef _32BIT_ +const uint64 UINT_ZERO = UINT64_ZERO; +const uint64 UINT_ONE = UINT64_ONE; +#else +const unsigned int UINT_ZERO = 0U; +const unsigned int UINT_ONE = 1U; +#endif + +} // namespace sc_dt |