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README.rebuild

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For maintainers
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How to rebuild BLAS and LAPACK following updates to the refereence versions.

1. Mechanically replace the existing blas_original.f and lapack_original.f
   files with updated versions so that the main procedures mentioned
   in blas_interface.F90 and lapack_interface.F90, plus all of their
   dependencies, are present.

2. Apply the NAG polish tools as follows:

nagfor =epolish -align_right_continuation -noblank_line_after_decls -fixed -indent=2 -indent_continuation=2 -keep_blank_lines -kwcase=U -margin=7 -norenumber -width=73 -alter_comments -delete_all_comments -dcfuns -case:comp=lowercase,intr=UPPERCASE,proc=UPPERCASE,constr=UPPERCASE,var=lowercase blas_original.f -o blas_original.f90

nagfor =epolish -align_right_continuation -noblank_line_after_decls -fixed -indent=2 -indent_continuation=2 -keep_blank_lines -kwcase=U -margin=7 -norenumber -width=73 -alter_comments -delete_all_comments -dcfuns -case:comp=lowercase,intr=UPPERCASE,proc=UPPERCASE,constr=UPPERCASE,var=lowercase lapack_original.f -o lapack_original.f90

nagfor =epolish -align_right_continuation -noblank_line_after_decls -fixed -indent=2 -indent_continuation=2 -keep_blank_lines -kwcase=U -margin=7 -norenumber -width=73 -alter_comments -delete_all_comments -dcfuns -case:comp=lowercase,intr=UPPERCASE,proc=UPPERCASE,constr=UPPERCASE,var=lowercase ieeeck_original.f -o ieeeck.f90

nagfor =epolish -align_right_continuation -noblank_line_after_decls -fixed -indent=2 -indent_continuation=2 -keep_blank_lines -kwcase=U -margin=7 -norenumber -width=73 -alter_comments -delete_all_comments -dcfuns -case:comp=lowercase,intr=UPPERCASE,proc=UPPERCASE,constr=UPPERCASE,var=lowercase noieeeck_original.f -o noieeeck.f90

   This will convert the files to modern fortran style, removing comments
   and highlighting (capitalizing) keywords and procedure names. It also
   provides sufficient line length wriggle-room to accomodate applied 
   additional 64bit integer suffices (such as _64) to subroutines/functions

3. Run the previously-generated blas_original.f90 and lapack_original.f90 
   files through the rebuild script by applying make as follows:

   make -f $GALAHAD/makefiles/pc64.lnx.gfo create

   Replace pc64.lnx.gfo above with whatever is your prefered GALAHAD
   architecture file (e.g., examine "ls $GALAHAD/makefiles/")

Nick Gould
for GALAHAD productions
January 23rd 2024