Update README.md

README.md

@@ -1,14 +1,15 @@
 # Fortran ZFP Example
 [![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
 [![Fortran](https://img.shields.io/badge/Fortran-734f96?logo=fortran&style=flat)](https://fortran-lang.org)
+![Build Status](https://github.com/ofmla/zfp_simple_example/actions/workflows/CI.yml/badge.svg)
 
-This repository demonstrates how to integrate the Fortran bindings for the ZFP library into a simple example that illustrates compression and decompression of a double-precision 3D array.
+This repository demonstrates how to integrate the [Fortran bindings for the ZFP library] (https://github.com/LLNL/zfp/blob/develop/fortran/zfp.f90) into a simple example that illustrates compression and decompression of a double-precision 3D array.
 
 ## Overview
 
 [ZFP](https://github.com/LLNL/zfp) is an open-source library for compressed floating-point and integer arrays that support high throughput read and write random access. This repository focuses on integrating the Fortran bindings for ZFP into a Fortran project, showcasing its usage through a simple example. 
 
-The `zfp_example.f90` file contains the main program, which demonstrates the compression and decompression of a 3D array of 64-bit floats using the ZFP library. The `zfp_fct_wrapper.f90` file provides a Fortran module with functions for interacting with the ZFP library.
+The `zfp_example.f90` file contains the main program, which demonstrates the compression and decompression of a 3D array of 64-bit floats using the ZFP library. It would be the equivalent of the [simple compressor example](https://github.com/LLNL/zfp/blob/develop/examples/simple.c). The `zfp_fct_wrapper.f90` file provides a Fortran module with functions for interacting with the ZFP library.
 
 
 ## Features
@@ -21,7 +22,7 @@ The `zfp_example.f90` file contains the main program, which demonstrates the com
 
 Before building and running the example, ensure you have the following prerequisites installed:
 
-- Fortran compiler (e.g., GNU Fortran, Intel Fortran)
+- Fortran compiler which fully supports F2018 (e.g., GNU Fortran, Intel Fortran)
 - CMake (version 3.16 or higher)
 
 ## Build the app
@@ -54,7 +55,7 @@ To decompress the compressed data and save it to `decompressed.zfp`, run the exe
   ```bash
     ./exe -d
   ```
-  Attempting to decompress data without first compressing it will result in an error, as the `compressed.zfp` file does not exist.
+  Attempting to decompress data without first compressing it will result in an error, as the `compressed.zfp` file does not exist. This example is built with double precision (real64) real values, but you can use `zfp_fct_wrapper.f90` in a project that uses real32 and explicitly specify the real kind with the preprocessor flag `-DREAL_KIND=REAL32`, i.e., `cmake -DREAL_KIND=REAL32 ..`.
 
 ## Contributing