Guide To Learn
In this chapter, we’ll work on daily stock price time series from 10 technology companies, including Apple, Amazon, and Intel. The data is stored in the comma-separated value (CSV) format. Here’s a sample of the Apple stock daily data: The columns in each CSV file are For a birds-eye view of how these stocks performed […]
In this section, we’ll set tangible goals for this exercise: Before we dive into implementing the solutions to these challenges, let’s get familiar with the data that we’ll work with.
We’ll learn how Fortran arrays work in a real-world application–analyzing stock price time series. This has been an increasingly popular topic since the early days of computer programming, and Fortran has been used in the bowels of many trading and banking systems, mainly thanks to its robustness, reliability, and efficiency. In this chapter, we’ll work […]
Fortran Wiki article on submodules: http://fortranwiki.org/fortran/show/Submodules Summary
The task is to define the set_gaussian subroutine, which sets the values of an input array to a specific shape, in its own module. The solution is analogous to defining the diff function in the mod_diff module. This time, we’re defining the set_gaussian procedure in the mod_initial module, as shown in the following listing. Listing 4.12 Defining the set_gaussian subroutine in a custom module ❶ Imports standard type kinds […]
The task is to import the portable type kind parameters from the iso_fortran_env module and use them in the tsunami simulator. To do this, we’ll rewrite only the declaration section, as shown in the following listing. Listing 4.11 Using portable type kinds in the tsunami simulator ❶ Assigns a name to the program ❷ Accesses only these two constants from […]
This section contains solutions to exercises in this chapter. Skip ahead if you haven’t worked through the exercises yet.
Finally, we get to the end! The complete code for the main application is shown in the following listing. Listing 4.10 Complete code of the main program of the tsunami simulator ❶ Imports type kind parameters for numeric data ❷ Imports the diff_centered function from the mod_diff module and renames it as diff ❸ Imports the set_gaussian procedure […]
Based on what we’ve covered so far about importing entities from Fortran modules, you can imagine a situation where variables or procedures with the same name could be imported from different modules. What happens in that case? Fortran will let you import two entities with the same name; however, it won’t let you reference them. […]