Released Cyclone Scheme 0.28.0

April 8th, 2021

Features

• Updated the compiler and runtime to allow a practically unlimited number of function arguments.

  Although the calling conventions of our generated C code and runtime functions were changed, there is no impact to application developers. Existing code will continue to work without requiring modifications. This includes code using our FFI, though it may be necessary to update define-c definitions if there are unused parameters in order to prevent warnings from the C compiler. For example by refactoring to use the new calling conventions:

  (define-c read-error
    "(void *data, object _, int argc, object *args)"
    " object port = args[1];
      object filename = args[2];
      object msg = args[3];
      ...
  

  No changes are a required if (cyclone foreign) is used to integrate with C.

• Provided alternative library names for each of the SRFI libraries. Generally these names follow the recommendations from R7RS Large - for example (scheme list) as a friendlier alternative to (srfi 1). Where such a name does not exist we provide a name with the (cyclone) prefix:

  Library Name	SRFI Number	Description	External Documentation
  scheme list	srfi 1	List library	Link
  cyclone and-let*	srfi 2	AND-LET*: an AND with local bindings, a guarded LET* special form	Link
  N/A	srfi 8	Binding to multiple values - Included as part of scheme base.	Link
  cyclone threads	srfi 18	Multithreading support	Link
  cyclone random	srfi 27	Sources of random bits	Link
  cyclone format	srfi 28	Basic format strings	Link
  cyclone integer-bits	srfi 60	Integers as bits	Link
  scheme hash-table	srfi 69	Basic hash tables	Link
  cyclone socket	srfi 106	Basic socket interface	Link
  scheme box	srfi 111	Boxes	Link
  scheme set	srfi 113	Sets and bags	Link
  scheme list-queue	srfi 117	Mutable queues	Link
  scheme generator	srfi 121	Generators	Link
  scheme comparator	srfi 128	Comparators	Link
  scheme sort	srfi 132	Sort libraries	Link
  scheme vector	srfi 133	Vector library (R7RS-compatible)	Link
  cyclone fixnum	srfi 143	Fixnums	Link

• We are modifying version numbers going forward to use explicit three digit semantic versioning major.minor.bugfix.

Bug Fixes

• Arthur Maciel replaced high resolution code in the runtime to use clock_gettime instead of gettimeofday.
• Fixed the REPL to no longer automatically exit if an expression evaluates to EOF. However, the REPL will exit as a special case if the EOF character is entered directly, for example via CTRL-D on Linux.