The success of Fortran as the predominant language in the field of scientific and numerical computing is due, in part, to its steady evolution. Following the publication of standards in 1966, 1977 and 1991, the committee responsible for their development, J3, worked in conjunction with an ISO committee to enhance Fortran 90, as the 1991 standard was known, creating Fortran 95. Fortran 95 was published in 1997, and, in addition to Fortran 90's new features for array processing, abstract data types, modules, and pointers, it contains additional features to keep it aligned with High Performance Fortran, as well as some minor enhancements. This volume represents a revision of the first edition of Fortran 90/95 Explained. The Fortran 95 material is now fully integrated with that of Fortran 90, whilst maintaining a clear distinction between the two language levels. Chapters on enhanced data type facilities and floating-point exception handling, two optional enhancements to Fortran 95, have been added. It is a complete and authoritative description of Fortran 90/95, and is intended for new and existing users, and for all those involved in scientific and numerical computing. From reviews of the first edition: The book is well designed and written in a clear and understandable language. It is recommended for people working in technical fields in FORTRAN environments who need a tutorial as well as a detailed language reference. IZentralblatt fur Mathematik und ihre Grenzegebiete, both authors are eminent scientists in the field of scientific computing and their experience shines through every page and every example. - Mathematics Today.