Modern Fortran Explained - Incorporating Fortran 2023

Fortran remains one of the principal programming languages used in high-performance scientific, numerical, and engineering computing. A series of significant revisions to the standard versions of the language have progressively enhanced its capabilities, and the current standard - Fortran 2023 - brings with it further additions and improvements. The language as defined by its most recent standards, with their introduction of object-oriented programming and of coarrays, is often referred to generically as ''Modern Fortran'', and this term is increasingly used in the literature.Thus, we see that Fortran''s particular advantages as a high-end numerical language, especially where arrays are the main form of data object and/or where complex arithmetic is involved, are still to the fore. It is able to attain the highest achievable optimization, mainly because multi-dimensional arrays are ''natural'' objects and because its pointers are highly constrained. There is every sign that Modern Fort