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hardfloat


License

License
GroupId

GroupId

edu.berkeley.cs
ArtifactId

ArtifactId

hardfloat_2.12
Last Version

Last Version

1.2.4
Release Date

Release Date
Type

Type

jar
Description

Description

hardfloat
hardfloat
Project URL

Project URL

http://chisel.eecs.berkeley.edu/
Project Organization

Project Organization

edu.berkeley.cs
Source Code Management

Source Code Management

https://github.com/ucb-bar/berkeley-hardfloat.git

Download hardfloat_2.12

Filename Size
hardfloat_2.12-1.2.4.pom
hardfloat_2.12-1.2.4.jar 391 KB
hardfloat_2.12-1.2.4-sources.jar 54 KB
hardfloat_2.12-1.2.4-javadoc.jar 1 MB
Browse

How to add to project

<!-- https://jarcasting.com/artifacts/edu.berkeley.cs/hardfloat_2.12/ -->
<dependency>
    <groupId>edu.berkeley.cs</groupId>
    <artifactId>hardfloat_2.12</artifactId>
    <version>1.2.4</version>
</dependency>
// https://jarcasting.com/artifacts/edu.berkeley.cs/hardfloat_2.12/
implementation 'edu.berkeley.cs:hardfloat_2.12:1.2.4'
// https://jarcasting.com/artifacts/edu.berkeley.cs/hardfloat_2.12/
implementation ("edu.berkeley.cs:hardfloat_2.12:1.2.4")
'edu.berkeley.cs:hardfloat_2.12:jar:1.2.4'
<dependency org="edu.berkeley.cs" name="hardfloat_2.12" rev="1.2.4">
  <artifact name="hardfloat_2.12" type="jar" />
</dependency>
@Grapes(
@Grab(group='edu.berkeley.cs', module='hardfloat_2.12', version='1.2.4')
)
libraryDependencies += "edu.berkeley.cs" % "hardfloat_2.12" % "1.2.4"
[edu.berkeley.cs/hardfloat_2.12 "1.2.4"]

Dependencies

compile (2)

Group / Artifact Type Version
org.scala-lang : scala-library jar 2.12.8
edu.berkeley.cs : chisel3_2.12 jar 3.2.4

Project Modules

There are no modules declared in this project.

Berkeley Hardware Floating-Point Units

This repository contains hardware floating-point units written in Chisel. This library contains parameterized floating-point units for fused multiply-add operations, conversions between integer and floating-point numbers, and conversions between floating-point conversions with different precision.

WARNING: These units are works in progress. They may not be yet completely free of bugs, nor are they fully optimized.

Recoded Format

The floating-point units in this repository work on an internal recoded format (exponent has an additional bit) to handle subnormal numbers more efficiently in a microprocessor. A more detailed explanation will come soon, but in the mean time here are some example mappings for single-precision numbers.

IEEE format                           Recoded format
----------------------------------    -----------------------------------
s 00000000 00000000000000000000000    s 000------ 00000000000000000000000
s 00000000 00000000000000000000001    s 001101011 00000000000000000000000
s 00000000 0000000000000000000001f    s 001101100 f0000000000000000000000
s 00000000 000000000000000000001ff    s 001101101 ff000000000000000000000
    ...              ...                   ...              ... 
s 00000000 001ffffffffffffffffffff    s 001111111 ffffffffffffffffffff000
s 00000000 01fffffffffffffffffffff    s 010000000 fffffffffffffffffffff00
s 00000000 1ffffffffffffffffffffff    s 010000001 ffffffffffffffffffffff0
s 00000001 fffffffffffffffffffffff    s 010000010 fffffffffffffffffffffff
s 00000010 fffffffffffffffffffffff    s 010000011 fffffffffffffffffffffff
    ...              ...                   ...              ... 
s 11111101 fffffffffffffffffffffff    s 101111110 fffffffffffffffffffffff
s 11111110 fffffffffffffffffffffff    s 101111111 fffffffffffffffffffffff
s 11111111 00000000000000000000000    s 110------ -----------------------
s 11111111 fffffffffffffffffffffff    s 111------ fffffffffffffffffffffff

Unit-Testing

To unit-test these floating-point units, you need the berkeley-testfloat-3 package.

To test floating-point units with the C simulator:

$ make
edu.berkeley.cs

UC Berkeley Architecture Research

Versions

Version
1.2.4
1.2.3