more flexible channel selection for audio_codec
make sure to test sin for negative angles
separate sample_end signals for each channel
add wave_gen unit
more states and done signal for wave_gen
add testbench for wavegen
extra port map to supress modelsim warning
add utilities for working with modelsim list output
use tcl script to set up wave_gen_tb
allow lst tools to handle floating point
allow lst2csv and plot_numbers to deal with multiple columns
move print_float_hex into common header
calculate arithmetic operation during test generation
regenerate fpadd testbench
make sure we assign shiftout to the right value
limits of sin should be -pi to pi
export more wave_gen internal signals
fix type in fpcomp