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This message announces the availability of Scheme release scm5e2.
SCM conforms to Revised^5 Report on the Algorithmic Language Scheme
and the IEEE P1178 specification. SCM is written in C and runs under
Amiga, Atari-ST, MacOS, MS-DOS, OS/2, NOS/VE, Unicos, VMS, Windows,
Unix, and similar systems.
SCM is free software. It is released under the GNU Public License
(GPL) with an exception allowing it to be linked with non-GPL
programs (see http://swiss.csail.mit.edu/~jaffer/SCM_LICENSE).
Documentation and distributions in several formats are linked from
SCM's home page:
http://swissnet.ai.mit.edu/~jaffer/SCM.html
Links to distributions of SCM and related softwares are at the end of
this message.
-=-=-
scm5e2 news:
Hinting GCC branch-predictions nets 10% speed improvement for SCM
running the JACAL symbolic mathematics system.
* scmfig.h (SCM_EXPECT_TRUE, SCM_EXPECT_FALSE): Added.
(POSFIXABLE, NEGFIXABLE, UNEGFIXABLE): SCM_EXPECT_TRUE.
* scmfig.h (__builtin_expect): Added stub for non-gcc compilers.
* scm.h: SCM_EXPECT_TRUE and SCM_EXPECT_FALSE replace
__builtin_expect().
(ASRTER, ASRTGO): SCM_EXPECT_FALSE.
* scm.h (INUMP, IMP, SINGP): Added __builtin_expect() netting more
than 9% speed improvement in JACAL.
* Makefile (scm5.opt, udscm4.opt): Commented out
-fno-guess-branch-probability flag.
* Makefile (udscm4.opt, scm5.opt): Condition
-fno-guess-branch-probability on `type gcc'.
* Makefile (scm5.opt, udscm4.opt): -fno-guess-branch-probability
improves benchmark speed 10% on i686.
(hfiles): Moved to top of file so that dependencies work.
* byte.c, continue.c, crs.c, dynl.c, eval.c, gsubr.c, ioext.c,
posix.c, ramap.c, record.c, repl.c, rope.c, sc2.c, scl.c, scm.c,
scm.h, socket.c, subr.c, sys.c, time.c, unif.c, unix.c, x.c:
Regularized `if' syntax.
* scm.c (l_pause): __CYGWIN__ now has pause().
* scmfig.h (LACK_FTIME): __CYGWIN__ now has ftime().
* socket.c (l_lna, l_hostinfo, l_netinfo, l_setnet): Made
conditional on __CYGWIN__.
* ioext.c: __CYGWIN__ has <unistd.h>.
* scl.c (lasinh, lacosh, latanh): Replaced by libc functions.
* scl.c (sum, difference, divide): Added BIGDIG* cast to &z.
* scl.c (numident): Don't bomb given bignums.
* scl.c (makdbl): (+ -1/0 +5i) ==> -1/0; not 0/0.
* scl.c (apx_log10): Removed unused variable.
* scl.c (scm_magnitude): Renamed from magnitude().
(scm_abs): Added, real-only.
* scl.c (safe_add_1): Replaces add1.
(scm_truncate): Renamed from ltrunc.
* scm.h (scm_truncate): Renamed from ltrunc.
(scm_floor, scm_ceiling): Added.
* subr.c (absval): Moved to scl.c.
* rope.c (num2dbl): Handle 0/0.
* scl.c (inf2str): Changed to "+inf.0" and "-inf.0".
(istr2flo): Parse "+inf.0", "-inf.0", and
COMPACT_INFINITY_NOTATION.
(istr2flo, inf2str): COMPACT_INFINITY_NOTATION flag enables +/0
and -/0 infinity notations.
* Transcen.scm (quo, rem, mod): New names for inexact quotient,
remainder, and modulo.
* Init5e1.scm (abs): Is no longer synonym for magnitude.
* Transcen.scm (exact-round, exact-floor, exact-ceiling)
(exact-truncate): Added SRFI-70 convenience functions.
(limit): Removed.
* Transcen.scm (sequence->limit): Removed use of 1/0 literal.
* Transcen.scm (expt): 0^0 ==> 1.
* scl.c (scm_intexpt): 0^0 ==> 1.
* Transcen.scm, Init5e1.scm (infinite?, finite?): Added.
* scl.c (makdbl, init_scl): Don't bother with scm_narn for MSC.
(scm_finitep): Removed to Transcen.scm and Init5e1.scm.
* scm.h (scm_narn): Renamed from infi.
* r4rstest.scm (SECTION 6 5 5): Restored 0^0 test.
* hobbit.scm (*c-keywords*): absval --> scm_abs; magnitude -->
scm_magnitude.
* rope.c, scm.c, scm.texi, scmmain.c, script.c, socket.c: Added
const to argv.
* scmmain.c, scm.h, scm.c, rope.c, repl.c: Added const decls.
* build.scm (build:command): Comment to script: [-p <platform>].
* Makefile (turfiles): Added turtle-graphics files.
* Makefile (DOSCM): Abstracted DOS zip creation.
* unexelf.c: Imported from emacs-22.0.50 to fix FC4 build.
* differ.c (diff_mid_split): Unused `m' argument removed.
* scm.spec (slibpath, dumparch): Added.
From: Steve VanDevender
* scmfig.h (SHORT_INT, CDR_DOUBLES): For __x86_64 (AMD Opteron).
From: Thomas Bushnell
* scm.doc, scm.1: Corrected spelling errors.
-=-=-
SCM source is available from:
http://swissnet.ai.mit.edu/ftpdir/scm/scm5e2.zip
swissnet.ai.mit.edu:/pub/scm/scm5e2.zip
http://swissnet.ai.mit.edu/ftpdir/scm/scm-5e2-1.src.rpm
swissnet.ai.mit.edu:/pub/scm/scm-5e2-1.src.rpm
Also available as i386 binary RPM:
http://swissnet.ai.mit.edu/ftpdir/scm/scm-5e2-1.i386.rpm
swissnet.ai.mit.edu:/pub/scm/scm-5e2-1.i386.rpm
SLIB is a portable Scheme library which SCM uses:
http://swissnet.ai.mit.edu/ftpdir/scm/slib3a3.zip
swissnet.ai.mit.edu:/pub/scm/slib3a3.zip
Also available as RPM:
http://swissnet.ai.mit.edu/ftpdir/scm/slib-3a3-1.noarch.rpm
swissnet.ai.mit.edu:/pub/scm/slib-3a3-1.noarch.rpm
JACAL is a symbolic math system written in Scheme:
http://swissnet.ai.mit.edu/ftpdir/scm/jacal1b6.zip
swissnet.ai.mit.edu:/pub/scm/jacal1b6.zip
SLIB-PSD is a portable debugger for Scheme (requires emacs editor):
http://swissnet.ai.mit.edu/ftpdir/scm/slib-psd1-3.tar.gz
swissnet.ai.mit.edu:/pub/scm/slib-psd1-3.tar.gz
SMG-SCM is an SMG interface package which works with SCM on VMS.
http://swissnet.ai.mit.edu/ftpdir/scm/smg-scm2a1.zip
swissnet.ai.mit.edu:/pub/scm/smg-scm2a1.zip
A VMS version of Unzip is available by anonymous FTP from
ftp.spc.edu:[ANONYMOUS.MACRO32]UNZIP.EXE.
TURTLSCM is a turtle graphics package which works with SCM on MS-DOS
or X11 machines:
http://swissnet.ai.mit.edu/ftpdir/scm/turtlegr.tar.gz
swissnet.ai.mit.edu:/pub/scm/turtlegr.tar.gz
XSCM is a X windows interface package which works with SCM:
http://swissnet.ai.mit.edu/ftpdir/scm/xscm-2.01.tar.gz
swissnet.ai.mit.edu:/pub/scm/xscm-2.01.tar.gz
MacSCM is a Macintosh applications building package which works with
SCM (similar to XSCM).
http://swissnet.ai.mit.edu/ftpdir/scm/macscm.tar.Z
swissnet.ai.mit.edu:/pub/scm/macscm.tar.Z
WB is a disk based, sorted associative array (B-tree) library for SCM.
Using WB, large databases can be created and managed from SCM.
http://swissnet.ai.mit.edu/ftpdir/scm/wb1c2.zip
swissnet.ai.mit.edu:/pub/scm/wb1c2.zip
http://swissnet.ai.mit.edu/ftpdir/scm/wb-1c2-1.src.rpm
swissnet.ai.mit.edu:/pub/scm/wb-1c2-1.src.rpm
Also available as i386 binary RPM:
http://swissnet.ai.mit.edu/ftpdir/scm/wb-1c2-1.i386.rpm
swissnet.ai.mit.edu:/pub/scm/wb-1c2-1.i386.rpm
SIMSYNCH is a digital logic simulation system written in SCM.
http://swissnet.ai.mit.edu/ftpdir/scm/synch1b0.zip
swissnet.ai.mit.edu:/pub/scm/synch1b0.zip
DLD is a C library package allowing SCM to dynamically load object
files on VAX (Ultrix), Sun 3 (SunOS 3.4 and 4.0), SPARCstation
(SunOS 4.0), Sequent Symmetry (Dynix), Atari ST, and a.out Linux
systems.
ftp.gnu.org:pub/gnu/dld/dld-3.3.tar.gz
SCM.EXE (314k) is a SCM executable for DOS and MS-Windows.
Note: SCM.EXE still requires slib3a3 and scm5e2 above.
http://swissnet.ai.mit.edu/ftpdir/scm/scm.exe
swissnet.ai.mit.edu:/pub/scm/scm.exe
#! implements "#!" (POSIX) shell-scripts for MS-DOS batch files.
http://swissnet.ai.mit.edu/ftpdir/scm/sharpbang.zip
swissnet.ai.mit.edu:/pub/scm/sharpbang.zip
http://swissnet.ai.mit.edu/ftpdir/scm/#!.zip
swissnet.ai.mit.edu:/pub/scm/#!.zip
Programs for printing and viewing TexInfo documentation (which SCM
has) come with GNU Emacs or can be obtained via ftp from:
ftp.gnu.org:pub/gnu/texinfo/texinfo-4.0.tar.gz
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