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This standard, designated FORTRAN 77, introduced many new statements into the language. In fact, the previous language standard FORTRAN 66 is a very small document and describes, what is in effect, a subset of most implementations of FORTRAN. For example, the WATFIV and WATFOR-11 implementations are based upon the IBM definition of FORTRAN-IV.
An important practical extension to FORTRAN 77 was the release of MIL-STD-1753 in 1978. [37] This specification, developed by the U.S. Department of Defense, standardized a number of features implemented by most FORTRAN 77 compilers but not included in the ANSI FORTRAN 77 standard. These features would eventually be incorporated into the ...
MINPACK is a library of FORTRAN subroutines for the solving of systems of nonlinear equations, or the least squares minimization of the residual of a set of linear or nonlinear equations. The NAG Fortran Library is a collection of mathematical and statistical routines for Fortran. NOVAS is a software library for astrometry-related numerical ...
LAPACK was originally written in FORTRAN 77, but moved to Fortran 90 in version 3.2 (2008). [3] The routines handle both real and complex matrices in both single and double precision. LAPACK relies on an underlying BLAS implementation to provide efficient and portable computational building blocks for its routines. [2]: "
Several output formats are supported such as X11, VGA, PostScript, PDF, CGM, WMF, EMF, SVG, HPGL, PNG, BMP, PPM, GIF and TIFF. DISLIN is available for the programming languages Fortran 77, Fortran 90/95 and C. Plotting extensions for the languages Perl, Python, Java, Julia, Ruby, Go and Tcl are also supported for most operating systems.
One of the major features of FORTRAN 77 was the CHARACTER string data type. Use of this data type dramatically simplified character manipulation in Fortran programs – rendering almost all uses of the Hollerith constant technique obsolete.
Initial Ratfor source code was ported to C in 1985 [1] and improved to produce Fortran 77 code too. [2] A git tree has been set in 2010 in order to revive ratfor . [3] Although the GNU C compiler had the ability to directly compile a Ratfor file (.r) without keeping a useless intermediate Fortran code (.f) (gcc foo.r), this functionality was lost in version 4 during the move in 2005 from f77 ...
SLATEC Common Mathematical Library is a FORTRAN 77 library of over 1,400 general purpose mathematical and statistical routines. The code was developed at US government research laboratories and is therefore public domain software.