Initial GPL v.3 release

.filters/keywords.clean

@@ -0,0 +1,7 @@
+#!/bin/bash
+sed \
+-e 's/\$Id[^\$]*\$/\$Id\$/g' \
+-e 's/\$Date[^\$]*\$/\$Date\$/g' \
+-e 's/\$Author[^\$]*\$/\$Author\$/g' \
+-e 's/\$Revision[^\$]*\$/\$Revision\$/g' \
+-

.filters/keywords.smudge

@@ -0,0 +1,15 @@
+#!/bin/bash
+# Inspired by: https://github.com/turon/git-rcs-keywords/blob/master/.git_filters/rcs-keywords.smudge
+filename="${1-"."}"
+basename="$(basename "$filename")"
+# Read the last commit from the log
+author="$(git log -- "$filename" | awk '(NR<=3)&&/^Author: /{print substr($0,8)}')"
+date="$(git log -- "$filename" | awk '(NR<=3)&&/^Date: /{print substr($0,8)}')"
+ident="$(git log -- "$filename" | awk '(NR<=3)&&/^commit /{print $2}')"
+#
+sed \
+-e 's/\$Date[^\$]*\$/\$Date: '"$date"' \$/g' \
+-e 's/\$Author[^\$]*\$/\$Author: '"$author"' \$/g' \
+-e 's/\$Revision[^\$]*\$/\$Revision: '"$ident"' \$/g' \
+-e 's/\$Id[^\$]*\$/\$Id: '"$basename $date $author"' \$/g' \
+-

.github/workflows/fortran.yml

@@ -0,0 +1,19 @@
+name: C/C++ CI
+
+on:
+  push:
+    branches: [ main ]
+  pull_request:
+    branches: [ main ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: compile
+      run: make
+    - name: quick test
+      run: make -C examples check-min

.gitignore

@@ -0,0 +1,18 @@
+*.o
+*.mod
+*.x
+*.x_*
+*.il
+*.a
+*__genmod.f90 
+*.optrpt
+*.dbg
+*.swp
+*.table
+makefile.dep
+#
+preprocess/*
+#
+examples/*.out
+examples/*.table
+examples/*.gpl

Makefile

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+.PHONY: goal clean
+goal: makefile.dep
+	  make hydrogen_tunnel_v2.x
+	  make general_tunnel.x
+
+MAKEFLAGS = -r
+
+.SUFFIXES: .f90 .o .x .c .dep
+
+#
+#  This is the default; a config file may override it.
+#
+  ACT = sed -e 's/^!\*nq/    /'                     # Disable quad-math statements
+# ACT = sed -e 's/^!\*qd/    /' -e 's/^!\*lq/    /' # Enable quad-math statements everywhere
+ ACT2 =                                             # Disable FFTW3
+#ACT2 = -e 's/^!\*ft/    /'                         # Enable FFTW3 calls
+#
+# System-specific overrides
+#
+  include vanilla.mak
+# include configs/ifort_opt.mak
+# include configs/ifort_quad_opt.mak
+# include configs/gfortran_opt.mak
+# include configs/gfortran_quad_opt.mak
+
+#
+# Finish the set-up
+#
+LIBS = $(LAPACK) $(LAPACK) $(LIBEXTRA)
+
+#
+# Compiling and archiving rules
+#
+.f90.o:
+	$(ACT) $(ACT2) $< >preprocess/$<
+	$(F90) -c preprocess/$<
+
+dgefa.o:        dgefa.f
+	$(F90) -c dgefa.f
+
+dgedi.o:        dgedi.f
+	$(F90) -c dgedi.f
+
+clean:
+	-/bin/rm -f *.{o,mod,x,il,a} *__genmod.f90 checkpoint_{field,main}.* makefile.dep *.optrpt ./preprocess/*.f90
+
+makefile.dep: $(shell echo *.f90)
+	./make-depend.sh $^ > $@
+
+#
+# Explicit dependencies
+#
+
+LIBHYDROGEN += accuracy.o
+LIBHYDROGEN += constants.o
+LIBHYDROGEN += derivative_tools.o
+LIBHYDROGEN += dgedi.o
+LIBHYDROGEN += dgefa.o
+LIBHYDROGEN += find_minimum.o
+LIBHYDROGEN += fftw.o
+LIBHYDROGEN += find_root.o
+LIBHYDROGEN += lapack.o
+LIBHYDROGEN += math.o
+LIBHYDROGEN += poly_tools.o
+LIBHYDROGEN += sort_tools.o
+LIBHYDROGEN += timer.o
+LIBHYDROGEN += tridiagonal_tools.o
+LIBHYDROGEN += tridiagonal_cmtql1.o
+LIBHYDROGEN += versions.o
+LIBHYDROGEN += general_tunnel_bound.o
+LIBHYDROGEN += general_tunnel_continuum.o
+LIBHYDROGEN += general_tunnel_asymptotic.o
+LIBHYDROGEN += general_tunnel_data.o
+LIBHYDROGEN += general_tunnel_dump.o
+LIBHYDROGEN += general_tunnel_nonadiabatic.o
+LIBHYDROGEN += general_tunnel_potential.o
+
+#
+# Building the binaries
+#
+hydrogen_tunnel_v2.x: hydrogen_tunnel_v2.o $(LIBHYDROGEN)
+	$(F90) -o hydrogen_tunnel_v2.x hydrogen_tunnel_v2.o $(LIBHYDROGEN) $(LIBS)
+
+general_tunnel.x: general_tunnel.o $(LIBHYDROGEN)
+	$(F90) -o general_tunnel.x general_tunnel.o $(LIBHYDROGEN) $(LIBS)
+
+#
+# Automatically-generated dependencies
+#
+include makefile.dep