Decimal-128 Floating-Point Converter

This web application will convert a decimal value to its IEEE-754 Decimal-128 floating-point value.

This project is for the CSARCH2 class at De La Salle University.

Access our web application here:
🔗 https://ieee-754-dec128-converter.vercel.app/

Table of Contents

• Introduction
• Project Showcase Video
• Analysis Writeup
• Test Cases
  • Positive Cases
  • Negative Cases
  • Rounding to 34 digits (Positive) with Different Rounding Methods
  • Rounding to 34 digits (Negative) with Different Rounding Methods
• Text File Output
• Team Members

Project Showcase Video

Here is the video showcase of our program. The video consists of the build and run of the web application, including the test cases we conducted.

CSARCH2.S11.Group.4.Simulation.Project.Video.mp4

Alternatively, you can watch the video here.

Analysis Writeup

You may view the analysis writeup here.

Alternatively, you may download our pdf here.

Test Cases

Here are the test cases the team conducted. Kindly wait for the screenshots to load up.

Positive Cases

$12345000_{10} x 10^{125}$

Trailing Zeroes (Positive) - Truncation Rounding Method

$0000012345_{10} x 10^{125}$

Leading Zeroes (Positive) - Truncation Rounding Method

$12345_{10} x 10^{6111}$

Highest Possible Exponent - Truncation Rounding Method

$12345_{10} x 10^{6112}$

Infinity Case - Truncation Rounding Method

Negative Cases

$-12345000_{10} x 10^{125}$

Trailing Zeroes (Negative Decimal) - Truncation Rounding Method

$-12345_{10} x 10^{6112}$

Infinity Case (Negative Decimal) - Truncation Rounding Method

Rounding to 34 digits (Positive) with Different Rounding Methods

This will be the given for all rounding methods: $1000000000000000000000000000000004.5_{10} x 10^{5}$

Truncation Rounding Method

$1000000000000000000000000000000004.5_{10} x 10^{5}$

Ceiling Rounding Method

$1000000000000000000000000000000004.5_{10} x 10^{5}$

Floor Rounding Method

$1000000000000000000000000000000004.5_{10} x 10^{5}$

Round to Nearest - Ties to Even (RTN-TTE)

$1000000000000000000000000000000004.5_{10} x 10^{5}$

$1000000000000000000000000000000006.5_{10} x 10^{5}$

Rounding to 34 digits (Negative) with Different Rounding Methods

This will be the given for all rounding methods: $-1000000000000000000000000000000004.5_{10} x 10^{5}$

Truncation Rounding Method

$-1000000000000000000000000000000004.5_{10} x 10^{5}$

Ceiling Rounding Method

$-1000000000000000000000000000000004.5_{10} x 10^{5}$

Floor Rounding Method

$-1000000000000000000000000000000004.5_{10} x 10^{5}$

Round to Nearest - Ties to Even (RTN-TTE)

$-1000000000000000000000000000000004.5_{10} x 10^{5}$

$-1000000000000000000000000000000006.5_{10} x 10^{5}$

Text File Output

Here is a preview of what the .txt file should look like if the user prompts to download the result.

Team Members

This project is developed by S11 Group 4

• Go, Ar Jettherson
• Javellana, Mac Andre
• Martinez, Jose Raphael
• Niño, John Kovie