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Task #4824

[model] Floating-point arithmetic support

Added by Alexander Kamkin over 6 years ago. Updated almost 6 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Andrei Tatarnikov
Category:
-
Target version:
Start date:
04/03/2014
Due date:
05/31/2014
% Done:

100%

Estimated time:
Detected in build:
svn
Published in build:
141230

Description

The JScience library can be used for supporting floating-point types and operations (see the org.jscience.mathematics.number.FloatingPoint package).

http://jscience.org/doc/license.txt

JScience - Java(TM) Tools and Libraries for the Advancement of Sciences.
Copyright (C) 2006 - JScience (http://jscience.org/)
All rights reserved.

Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:

    * Redistributions of source code must retain the above copyright notice
      and include this license agreemeent. 
    * Redistributions in binary form must reproduce the above copyright notice,
      this list of conditions and the following disclaimer in the documentation
      and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR 
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

History

#1

Updated by Alexander Kamkin over 6 years ago

  • Tracker changed from Bug to Task
#2

Updated by Andrei Tatarnikov about 6 years ago

Такая реализация лучше подходит:

http://www.apfloat.org/apfloat_java/

#3

Updated by Andrei Tatarnikov about 6 years ago

  • Status changed from New to Open
#4

Updated by Andrei Tatarnikov about 6 years ago

  • % Done changed from 0 to 10
#5

Updated by Andrei Tatarnikov about 6 years ago

  • % Done changed from 10 to 30

Поддерживается на уровне транслятора. Вся MIPS модель транслируется. Теперь нужно поддержать на уровне Model API.

#6

Updated by Andrei Tatarnikov about 6 years ago

  • % Done changed from 30 to 80

В r2408 сделана прототипная реализация, использующая классы стандартной бибилиотеки Java. Она ограничена IEEE 754 single и double и имеет проблемы с корректностью округления.

В дельнейшем предполагается использовать SoftFloat, который нужно портировать под Java или работать с ним через JNI:

http://www.jhauser.us/arithmetic/SoftFloat.html

#7

Updated by Alexander Kamkin about 6 years ago

  • Status changed from Open to Resolved

Поддержка в трансляторе сделана - закроем эту задачу.

#8

Updated by Andrei Tatarnikov almost 6 years ago

  • Status changed from Resolved to Closed
  • % Done changed from 80 to 100
  • Published in build set to 141230

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