Re: [Chicken-users] C_truep( C_fixnump( w ))

[felix winkelmann]

On Mon, Feb 25, 2008 at 1:28 PM, Heinrich Taube <address@hidden> wrote:
> thank you both very much. just to be sure:
>
>  (1) should i be using a C_truep() around C_immediatep() like the other
>  predicate tests or is this ok:
>
>         if ( C_immediatep(w) ) {
>            if ( C_truep(C_fixnump(w)) ) {
>                ...
>            }
>
>         else if  ( C_truep(C_blockp(w)) && C_truep( C_flonump( w ) )) {
>

Yes, this is correct. It is obviously inconsistent, but C_immediatep was
intended to be used from C and C_fixnump from compiled code.
Changing this will break old (compiled) code.

>
>  (2) how can i test for strictly #f #t boolean value inside the
>  immedatep clause?
>

(x == C_SCHEME_FALSE || x == C_SCHEME_TRUE)


cheers,
felix