WebAssembly in Action

D.1. Chapter 3

Chapter 3 has two exercises.

D.1.1. Exercise 1

Which four data types does WebAssembly support?

Solution

32-bit integers, 64-bit integers, 32-bit floats, and 64-bit floats

D.1.2. Exercise 2

Add a Decrement function to the side module you created in section 3.6.1.

1. The function should have an integer return value and an integer parameter. Subtract 1 from the value received, and return the result to the calling function.
2. Compile the side module, and then adjust the JavaScript to call the function and display the result to the console.

Solution

In your WebAssembly\ folder, create an Appendix D\D.1.2\source\ folder. Copy your side_module.c file from your Chapter 3\3.6 side_module\ folder into your new source\ folder.

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