I assume that you need without-gcing to use vector-sap safely, but SBCL
Raymond Toy <firstname.lastname@example.org
> Does ecl have the equivalent of cmucl's (and sbcl's)
> with-float-traps-masked and vector-sap?
> With-float-traps-masked sets up the fpu state to mask certain
> floating-point exceptions.
> Vector-sap basically takes a specialized array and returns the address
> of where the data actually is. This assumes that (simple-array
> double-float (*)) is stored in memory as one or more header words
> followed by consecutive double-floats.
> Oh, I also need the equivalent of without-gcing.