not all the old tests work
exception handlers were getting called too early in the chain
more extensive tests for error handling
use the error printing default handler only if we expect not to be called
move most mathematical functions here
remove non-arithmetic math functions to mathfns.c
math functions mathfns.c
more prototypes
string I/O functions bound
string I/O support
string I/O support
bug fixes in continuation mark code
bind abs
first stab at defining arc_abs
tests for the w/in|outfile stuff