The `collection-file-path` function did not handle compiled-file root
paths correctly. The problem was exposed by a recent change to the
default for `current-compiled-file-roots`, which made it match the
documentation, but this commit changes it back and fixes the
documentation.
Adapted from Peter Bex's Scheme version of CHICKEN's implementation
here:
https://www.more-magic.net/posts/numeric-tower-part-3.html
Improving dvision has a large effect on printing large integers in
base 10, such as printing `(expt 2 8000000)`.
Raise the threshold for using Karatsuba. The experimentally determined
threshold (on an M1 Mac) matches the GMP default threshold, so that
seems like a good sign.
Also, adjust kernel bignum operations to decrease the trap counter.
Otherwise, a program that performs many big multiplcations or
divisions does not check for Ctl-C or swap threads often enough.
Fix `unsafe-call-with-composable-continuation/no-wind` so that it's
not blocked by a barrier, since it's supposed to have thread-like
capturing ability.
Closes#3696
For a Unix-style installation, change the default mode to put
"compiled" directories under "lib" instead of "shared", since they're
architecture-specific for Racket CS.
This installation mode relies on the new 'compiled-file-roots config
entry. The installation process updates "config.rktl" so that
`current-compiled-file-roots` is initialized to find ".zo" files under
"lib".
Use `--enable-sharezo` to get the old behavior, either for installing
Racket BC or if you want to ignore "lib"-vs.-"share" guidelines to
simplify the installation.
If a Git package source does not include "#" followed by a ref, then
use the branch/commit designated by a server as the default branch or
commit (i.e., the one for the "HEAD" symref), instead of assuming the
branch "master".
This is technically a backward-incompatible change to the
interpretation of Git package sources, but explicit branch
specification continues to work the same. For the forseeable future,
to support recent versions, packages in a branch other than "master"
will still need to be specified using the branch name, such as
including "#main" at the end of the package source. Eventually,
relevant versions of Racket will support the new default.
Relevant to #3672
Also, change the default ref from "master" to 'head. This is
technically a backward-incompatible change, but so far it seems more
likely to make things work right than to break them.
In Racket BC, callbacks don't have to be atomic, and it's ok for the
callback to raise an exception (as long as the foreign library is ok
with a longjmp escape). Using `#:callback-exns? #t` on a foreign
callout in both CS and BC allows an atomic callback (invoked during
the foreign call) to raise an exception. Terms and conditions apply.
