Here is a list of all files with brief descriptions:

include
roboptim
core
callback
multiplexer.hh
multiplexer.hxx
decorator
cached-function.hh
cached-function.hxx
finite-difference-gradient.hh
finite-difference-gradient.hxx
detail
autopromote.hh
structured-input.hh
structured-input.hxx
utility.hh
function
constant.hh
cos.hh
identity.hh
polynomial.hh
polynomial.hxx
sin.hh
operator
bind.hh
bind.hxx
chain.hh
chain.hxx
concatenate.hh
concatenate.hxx
derivative.hh
map.hh
map.hxx
minus.hh
minus.hxx
plus.hh
plus.hxx
product.hh
product.hxx
scalar.hh
scalar.hxx
selection-by-id.hh
selection-by-id.hxx
selection.hh
selection.hxx
split.hh
split.hxx
plugin
dummy-laststate.hh
dummy-laststate.hxx
dummy-td.hh
dummy.hh
visualization
fwd.hh
gnuplot-commands.hh
gnuplot-differentiable-function.hh
gnuplot-function.hh
gnuplot-matrix.hh
gnuplot.hh
matplotlib-commands.hh
matplotlib-function.hh
matplotlib-matrix.hh
matplotlib.hh
alloc.hh
cache.hh
cache.hxx
config.hh
debug.hh
deprecated.hh
derivable-function.hh
derivable-parametrized-function.hh
derivative-size.hh
differentiable-function.hh
differentiable-function.hxx
finite-difference-gradient.hh
function-pool.hh
function-pool.hxx
function.hh
fwd.hh
generic-solver.hh
indent.hh
io.hh
linear-function.hh
linear-function.hxx
n-times-derivable-function.hh
n-times-derivable-function.hxx
numeric-linear-function.hh
numeric-linear-function.hxx
numeric-quadratic-function.hh
numeric-quadratic-function.hxx
optimization-logger.hh
optimization-logger.hxx
parametrized-function.hh
parametrized-function.hxx
portability.hh
problem.hh
problem.hxx
quadratic-function.hh
quadratic-function.hxx
result-with-warnings.hh
result.hh
solver-error.hh
solver-factory.hh
solver-factory.hxx
solver-state.hh
solver-state.hxx
solver-warning.hh
solver.hh
solver.hxx
sum-of-c1-squares.hh
sum-of-c1-squares.hxx
sys.hh
terminal-color.hh
twice-derivable-function.hh
twice-differentiable-function.hh
twice-differentiable-function.hxx
util.hh
util.hxx
warning.hh
core.hh
src
visualization
gnuplot-commands.cc
gnuplot-differentiable-function.cc
gnuplot-matrix.cc
gnuplot.cc
matplotlib-commands.cc
matplotlib-matrix.cc
matplotlib.cc
alloc.cc
debug.hh
doc.hh
dummy-d-sparse-laststate.cc
dummy-laststate.cc
dummy-td.cc
dummy.cc
finite-difference-gradient.cc
generic-solver.cc
indent.cc
result-with-warnings.cc
result.cc
solver-error.cc
solver-warning.cc
solver.cc
util.cc