This text investigates the transition from Fortran 77 to the Fortran 90 standard, focusing on how the updated language features support modern computational requirements in science and engineering. The authors, who were directly involved in the development of the Fortran 90 standard, utilize their technical expertise to provide a comprehensive tutorial. They present a structured approach to learning the language, emphasizing practical application and the evolution of programming syntax from previous iterations.

Experts recognize this work as a foundational text due to the authors' direct involvement in the standardization process. Readers frequently note the technical precision of the prose, which serves as a reliable reference for those transitioning to the Fortran 90 environment.