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168 lines
7.0 KiB
C
168 lines
7.0 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Communicator client code, released
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* March 31, 1998.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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** File: jslong.h
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** Description: Portable access to 64 bit numerics
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**
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** Long-long (64-bit signed integer type) support. Some C compilers
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** don't support 64 bit integers yet, so we use these macros to
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** support both machines that do and don't.
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**/
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#ifndef jslong_h___
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#define jslong_h___
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#include "jstypes.h"
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JS_BEGIN_EXTERN_C
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#define JSLL_INIT(hi, lo) ((((JSInt64)(hi)) << 32) + (JSInt64)(lo))
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/***********************************************************************
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** MACROS: JSLL_*
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** DESCRIPTION:
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** The following macros define portable access to the 64 bit
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** math facilities.
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**
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***********************************************************************/
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/***********************************************************************
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** MACROS: JSLL_<relational operators>
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**
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** JSLL_IS_ZERO Test for zero
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** JSLL_EQ Test for equality
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** JSLL_NE Test for inequality
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** JSLL_GE_ZERO Test for zero or positive
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** JSLL_CMP Compare two values
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***********************************************************************/
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#define JSLL_IS_ZERO(a) ((a) == 0)
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#define JSLL_EQ(a, b) ((a) == (b))
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#define JSLL_NE(a, b) ((a) != (b))
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#define JSLL_GE_ZERO(a) ((a) >= 0)
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#define JSLL_CMP(a, op, b) ((JSInt64)(a) op (JSInt64)(b))
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#define JSLL_UCMP(a, op, b) ((JSUint64)(a) op (JSUint64)(b))
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/***********************************************************************
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** MACROS: JSLL_<logical operators>
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**
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** JSLL_AND Logical and
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** JSLL_OR Logical or
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** JSLL_XOR Logical exclusion
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** JSLL_OR2 A disgusting deviation
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** JSLL_NOT Negation (one's compliment)
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***********************************************************************/
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#define JSLL_AND(r, a, b) ((r) = (a) & (b))
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#define JSLL_OR(r, a, b) ((r) = (a) | (b))
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#define JSLL_XOR(r, a, b) ((r) = (a) ^ (b))
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#define JSLL_OR2(r, a) ((r) = (r) | (a))
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#define JSLL_NOT(r, a) ((r) = ~(a))
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/***********************************************************************
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** MACROS: JSLL_<mathematical operators>
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**
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** JSLL_NEG Negation (two's compliment)
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** JSLL_ADD Summation (two's compliment)
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** JSLL_SUB Difference (two's compliment)
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***********************************************************************/
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#define JSLL_NEG(r, a) ((r) = -(a))
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#define JSLL_ADD(r, a, b) ((r) = (a) + (b))
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#define JSLL_SUB(r, a, b) ((r) = (a) - (b))
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/***********************************************************************
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** MACROS: JSLL_<mathematical operators>
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**
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** JSLL_MUL Product (two's compliment)
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** JSLL_DIV Quotient (two's compliment)
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** JSLL_MOD Modulus (two's compliment)
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***********************************************************************/
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#define JSLL_MUL(r, a, b) ((r) = (a) * (b))
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#define JSLL_DIV(r, a, b) ((r) = (a) / (b))
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#define JSLL_MOD(r, a, b) ((r) = (a) % (b))
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/***********************************************************************
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** MACROS: JSLL_<shifting operators>
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**
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** JSLL_SHL Shift left [0..64] bits
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** JSLL_SHR Shift right [0..64] bits with sign extension
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** JSLL_USHR Unsigned shift right [0..64] bits
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** JSLL_ISHL Signed shift left [0..64] bits
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***********************************************************************/
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#define JSLL_SHL(r, a, b) ((r) = (JSInt64)(a) << (b))
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#define JSLL_SHR(r, a, b) ((r) = (JSInt64)(a) >> (b))
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#define JSLL_USHR(r, a, b) ((r) = (JSUint64)(a) >> (b))
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#define JSLL_ISHL(r, a, b) ((r) = (JSInt64)(a) << (b))
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/***********************************************************************
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** MACROS: JSLL_<conversion operators>
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**
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** JSLL_L2I Convert to signed 32 bit
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** JSLL_L2UI Convert to unsigned 32 bit
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** JSLL_L2F Convert to floating point
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** JSLL_L2D Convert to floating point
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** JSLL_I2L Convert signed to 64 bit
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** JSLL_UI2L Convert unsigned to 64 bit
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** JSLL_F2L Convert float to 64 bit
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** JSLL_D2L Convert float to 64 bit
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***********************************************************************/
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#define JSLL_L2I(i, l) ((i) = (JSInt32)(l))
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#define JSLL_L2UI(ui, l) ((ui) = (JSUint32)(l))
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#define JSLL_L2F(f, l) ((f) = (JSFloat64)(l))
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#define JSLL_L2D(d, l) ((d) = (JSFloat64)(l))
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#define JSLL_I2L(l, i) ((l) = (JSInt64)(i))
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#define JSLL_UI2L(l, ui) ((l) = (JSInt64)(ui))
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#define JSLL_F2L(l, f) ((l) = (JSInt64)(f))
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#define JSLL_D2L(l, d) ((l) = (JSInt64)(d))
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/***********************************************************************
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** MACROS: JSLL_UDIVMOD
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** DESCRIPTION:
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** Produce both a quotient and a remainder given an unsigned
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** INPUTS: JSUint64 a: The dividend of the operation
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** JSUint64 b: The quotient of the operation
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** OUTPUTS: JSUint64 *qp: pointer to quotient
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** JSUint64 *rp: pointer to remainder
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***********************************************************************/
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#define JSLL_UDIVMOD(qp, rp, a, b) \
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(*(qp) = ((JSUint64)(a) / (b)), \
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*(rp) = ((JSUint64)(a) % (b)))
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JS_END_EXTERN_C
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#endif /* jslong_h___ */
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