* conform needs char-downcase.
* maze needs bitwise-and
* ray needs many fl procedures
* quicksort needs bignum modulo.
* scheme needs complex? and other stuff.
* simplex needs flpositive?
* slatex needs string-ci=?
* compiler needs string-downcase

* ctak crashes with a bus error.
* fibc crashes with a segfault.
* fibfp does not terminate
* mbrot too slow
* ntakl kinda slow
* pnpoly kinda slow
* sumfp/fpsum too slow
* string too slow
* nbody does not work