| /***************************************************************************** |
| |
| 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 |