# [racket-dev] [plt] Push #25698: master branch updated

At Fri, 16 Nov 2012 14:43:56 -0700, Neil Toronto wrote:
>* On 11/16/2012 02:10 PM, mflatt at racket-lang.org wrote:
*>* > 9a48e5d Matthew Flatt<mflatt at racket-lang.org> 2012-11-16 14:03
*>* > :
*>* > | math: avoid import at unnecessary phase
*>* > |
*>* > | This repair avoids using at compile time external libraries that
*>* > | are needed at run time.
*>* > :
*>* > M collects/math/private/matrix/matrix-sequences.rkt | 4 +---
*>* >
*>* > [...]
*>* >
*>* > collects/math/private/matrix/matrix-sequences.rkt
*>* > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*>* > --- OLD/collects/math/private/matrix/matrix-sequences.rkt
*>* > +++ NEW/collects/math/private/matrix/matrix-sequences.rkt
*>* > @@ -5,9 +5,7 @@
*>* > in-column)
*>* >
*>* > (require math/array
*>* > - (except-in math/matrix in-row in-column)
*>* > - (for-syntax (except-in math/matrix in-row in-column))
*>* > - (for-template (except-in math/matrix in-row in-column)))
*>* > + (except-in math/matrix in-row in-column))
*>*
*>* Was this the only necessary change?
*
Yes.
>* If so, it's a little weird, because
*>* libmpfr isn't supposed to be loaded until its first export is used. The
*>* constants are all delayed (their names are bound to macros that expand
*>* to uses of `force'), and every function and delay thunk is wrapped with
*>* code that loads the external library.
*
`math/private/flonum/expansion/expansion-log' has
(define-values (log2-hi log2-lo) (bigfloat->fl2 log2.bf))
>* Also, I have no idea what it all has to do with a typed submodule in
*>* "math/special-functions.rkt", which is apparently what the error was
*>* complaining about. I can't work out the dependency chain. Help?
*
That was a Racket bug, now fixed.