history3.txt

遗传算法工具箱 希望高手指点 GATOOLS

Library
-------

Fixes bugs:
	- gs_makeimagedevice didn't set the caller's pointer to the newly
created device.  (bug introduced in 3.27) (gsdevice.c)
	- There were still some mismatches between char * and byte * values.
(gsdparam.c)
	- The halftone replication algorithm could produce inappropriately
large replicated masks.  (gxht.c)
	- stroke usually did the wrong thing for degenerate (single-point)
subpaths.  (gxstroke.c)

Version 3.27(beta)(withdrawn) (2/8/95)
=============================

Yet another bug-fix beta release.  This release had so many serious problems
(the most serious being at least one changed file that the release tool
failed to include in the fileset) that it was withdrawn less than a day
after it was issued.

Documentation
-------------

Fixes bugs:
	- The NEWS for 3.26 didn't mention the fact that the stdxxx stream
interface used by MS Windows, OS/2, and Macintosh implementations had
changed.  (NEWS)
	- The file public.doc wasn't distributed with the previous fileset.

Brings the NeXTSTEP documentation up to date for NeXTSTEP releases 3.2 and
subsequent.  (make.doc)

Procedures
----------

Fixes bugs:
	- Some dependency lists in gs.mak were out of date.  (gs.mak)
	- A 'fi;' was missing in the Unix install script.  (unix-end.mak)
	- There was no VMS build script for the PDF options.  (vms.mak)
	- The VMS script used CC_QUALI instead of CC_QUAL in several places.
(vms.mak)

Utilities
---------

Fixes bugs:
	- ps2epsi's usage prompt referred to "pstoepsi".  (ps2epsi)
	- ps2epsi set PATH and LOCALPATH unilaterally.  (ps2epsi)

Comments out the sample usage line at the end of viewjpeg.ps.  (viewjpeg.ps)

Drivers
-------

Fixes bugs:
	- The fax and tiff drivers didn't free all of their working storage.
(gdevtfax.c)

Adds user-contributed drivers for the BJC 600 and ESC/P printers.
(devs.mak, gdevcdj.c)

Platforms
---------

Fixes bugs:
	- Some necessary casts of string parameters to (const byte *) were
omitted.  (gp_mswin.c, gp_os2.c)

Adds the psmono and bit* drivers, and removes the p*m drivers, in the OS/2,
32-bit MS-DOS, and 32-bit Windows configurations.  (bcwin32.mak, os2.mak,
watc.mak)

Fonts
-----

Fixes bugs:
	- The Fontmap for Ultrix had somehow become slightly incorrect.
(Fontmap.Ult)

Removes the font file names from the dependency lists in cfonts.mak.  This
makes cfonts.mak readily usable with any set of fonts, but it also means
that it will always run font2c, rather than being able to avoid this if the
.c file is up to date.  (cfonts.mak)

Interpreter
-----------

Fixes bugs:
	- Some operators could fail if the stdxxx streams weren't currently
open.  (files.h, zfileio.c, ziodev.c)
	- setpagedevice didn't handle unrecognized keys properly.
(gs_setpd.ps)
	- The value returned for the HWColorMap device parameter was
allocated incorrectly, confusing the garbage collector.  (iparam.c)
	- Typing ahead at the >>showpage<< prompt no longer caused all
further pages to be processed without stopping.  (gs_init.ps)
	- Setting DEVICEWIDTHPOINTS or DEVICEHEIGHTPOINTS on the command
line caused a typecheck.  (gs_init.ps)
	- The garbage collector didn't handle halftone threshold arrays
properly.  (zht2.c)
	- setdefaulttimeouts caused an error on Level 2 systems.
(gs_lev2.ps)
	- cvi and cvr weren't equivalent to token followed by a type check.
(iscan.h, iscannum.h, iscan.c, iscannum.c, ztoken.c, ztype.c)
	- In Level 2 systems, image and colorimage didn't allow 12 bits per
sample.  (zpaint.c)
	- If debugging was enabled, the garbage collector printed spurious
error messages about the allocator objects not being in a chunk.  (ialloc.c)
	- restore didn't reset the count of operator procedures, so the
operator procedure table could fill up.  Fixing this required splitting the
op_array_table into a global table and a local table.  (opdef.h, iinit.c,
iutil.c, zmisc.c)
	- .forgetsave could leave a dangling pointer in the memory manager,
causing an access error.  (ialloc.c, isave.c)
	- Freed objects weren't always marked as freed, which could confuse
the memory validator.  (ialloc.c)
	- .forgetsave didn't mark inner chunk headers as free, leading to
access errors.  (isave.c)

Changes the representation of operator procedures so that they point
directly to their definition in the op_array_table.  (iref.h, opdef.h,
idebug.c, igc.c, igcref.c, interp.c, zmisc.c)

Removes .makeglobaloperator.  (zmisc.c)

Adds patches to discard some common garbage produced by H-P-oriented
applications and drivers.  (gs_init.ps)

Changes the >>showpage<< prompt so that if the input reaches EOF, the
interpreter still stops after the next >>showpage<<, rather than processing
all subsequent pages.  This is a consequence of the bug fix that
automatically reopens the stdxxx files.

Adds an optional dictionary parameter for the RunLengthEncode/Decode
filters, to allow specifying EndOfData.  The default is true.  (zfilter.c)

Adds ByteTranslateEncode/Decode filters.  (zfilter2.c)

Streams
-------

Fixes bugs:
	- The K > 0 option of the CCITTFaxDecode filter switched back to 2-D
encoding if an output buffer boundary fell in the middle of a 1-D line, and
signalled an error if an input buffer boundary fell in the middle of an EOL.
(scfd.c)

Adds an EndOfData flag to the RunLengthEncode/Decode filters.  If true, RLE
generates 128 as EOD, and RLD recognizes it; if false, RLE does not mark
EOD, and RLD ignores 128.  (srlx.h, gxclist.c, gxclread.c, sfilter1.c)

Adds ByteTranslateEncode/Decode streams.  (sbtx.h, sfilter2.c)

Library
-------

Fixes bugs:
	- There were some mismatches between char * and byte * values.
(gsdparam.c)
	- Failure to round a scaling coordinate caused one-for-one
black-and-white images to render slower than they should.  (gsimage.c)
	- Setting PageSize without setting HWResolution could cause an
invalid memory access.  (gsdparam.c)
	- The garbage collector didn't handle halftone threshold arrays
properly.  (gxht.h, gsht.c, gsht1.c)

Version 3.26(beta) (2/1/95)
==================

Yet another bug-fix beta release, still not ready for public release.

Documentation
-------------

Fixes bugs:
	- The description of device properties had gotten out of sync with
the code.  (language.doc)

Splits off documentation specific to the Aladdin (non-GNU) release into a
separate file.  (readme, public.doc, unix-end.mak)

Adds a pointer to a collection of other free fonts (including some Cyrillic
ones) available on the net.  (public.doc)

Procedures
----------

Fixes bugs:
	- On VMS systems with both VAX C and DEC C installed, the build script
used VAX C rather than DEC C.  (vms.mak)
	- zfdecode.c didn't have a build rule.  (gs.mak)
	- Several macros in the makefile were used before they were defined.
(gs.mak)
	- Several macros in the makefile were used without being defined.
(gs.mak)

Replaces the gssetdev, gssetmod, and gsaddmod scripts with more variants of
echogs.  (echogs.c, gs.mak)

Utilities
---------

Fixes bugs:
	- The ps2ascii shell script passed a -f flag to the shell, which not
all shells recognize.  (ps2ascii)

Drivers
-------

Fixes bugs:
	- Due to a typo in an initialization string, the H-P printers didn't
reset the top margin to zero.  (gdevdjet.c)

Adds InputAttributes and OutputAttributes entries to the H-P drivers.  (This
should probably be generic to all printers.)  (gdevdjet.c)

Replaces the contributed Epson Stylus Color driver with a newer version.
(devices.doc, gdevstc.c)

Platforms
---------

Fixes bugs:
	- DEC C complained about 'abs' and 'exit' not being declared.  (x_.h)
	- gp_mswin.c and gp_os2.c wouldn't compile.  (gp_mswin.c, gp_os2.c,
ziodev.c)

Interpreter
-----------

Fixes bugs:
	- The default CIE rendering dictionary gave everything a magenta tint.
(gs_lev2.ps)
	- Changing HWResolution and PageSize in the same call of
setpagedevice produced an incorrect HWSize.  (gsdparam.c)
	- .putdeviceparams didn't accept all the keys that .getdeviceparams
returned.  (gsdparam.c)
	- The default handler for interrupt and timeout errors didn't push a
current object (command) on the stack.  (gs_init.ps)
	- The garbage collector didn't handle strings larger than 64K
properly.  (iastate.h, ialloc.c, igcstr.c)

Adds media matching and Policy consultation to the implementation of
setpagedevice.  (gs_setpd.ps)

Adds a MaxGlobalVM system parameter.  (zmisc2.c)

Streams
-------

Fixes bugs:
	- The CCITTFaxEncode filter could access a byte beyond the end of
the allocated area.  (scfe.c)
	- The CCITTFaxDecode filter could get an ioerror if a buffer
boundary fell in exactly the wrong place.  (scfd.c)

Library
-------

Fixes bugs:
	- The garbage collector didn't trace colored halftones properly.
(gzht.h)
	- The garbage collector didn't relocate the bitmap pointers in
halftone caches properly.  (gzht.h, gxht.c)

Adds the ability to transmit dictionaries through the param_list mechanism
(specifically, as device parameters).  This change is
non-backward-compatible only for implementors of parameter lists, which only
exist within the Ghostscript core.  (gsparam.h, iparam.h, iparam.c)

Removes the InitialMatrix device property.  (gsdparam.c)

Version 3.25(beta) (1/24/95)
==================

Yet another bug-fix beta release.  There are still at least half a dozen
significant known bugs to be fixed before a public release.

Documentation
-------------

Notes that on Unix systems, one should not edit 'makefile', but should edit
the individual subfile and run tar_cat.  THIS IS A NON-BACKWARD-COMPATIBLE
CHANGE.  (make.doc)

Adds information on the Macintosh implementation.  (readme)

Procedures
----------

Fixes bugs:
	- make clean failed on Unix systems where rm -f requires at least one
file name.  (gs.mak)
	- math_.h was omitted from many dependency lists.  (gs.mak)

Drivers
-------

Fixes bugs:
	- The X Windows and MS Windows draw-line routines couldn't possibly
produce sufficiently correct output (since the interface only provides integer
coordinates).  (gdevx.c, gdevwddb.c)

In response to patent-related actions by Unisys and CompuServe, removes the
GIF driver.  (*.mak)

Changes dci_std_color (and std_device_std_color_* and prn_device_std_*) so
that if the number of bits per pixel is 32, the device is defined as CMYK
rather than RGB.  (gxdevice.h)

Removes the tseng8 device, which is no longer useful.  (devs.mak, gdevsvga.c)

Adds pseudo-alpha support to the SVGA drivers, via the TextAlphaBits and
GraphicsAlphaBits device parameters.  (gdevsvga.h, gdevsvga.c)

Adds a user-contributed driver for the Epson Stylus Color printer.  (devs.mak,
gdevstc.c, devices.doc)

Platforms
---------

Fixes bugs:
	- The VMS build scripts had gotten out of sync (again).  (vms*.mak)

Interpreter
-----------

Fixes bugs:
	- The emulator name array was incorrectly declared const in one place.
(gs.c)
	- A closed file could incorrectly appear to be 'eq' to another file
(open or closed).  (iutil.c)
	- If %stdin/%stdout/%stderr was ever closed, it couldn't be
reopened.  (gs_btokn.ps, gs_init.ps, files.h, zfile.c, zfileio.c, zfilter.c,
zfproc.c, ziodev.c)

Changes (almost) all the operator routines to 'static'.  (z*.c)

Library
-------

Fixes bugs:
	- The raster value for replicated tiles in the halftone cache was
incorrect, causing unaligned memory accesses.  (gxht.c)
	- stroke and strokepath could produce slightly inaccurate output
(leading to slight visible anomalies) as a result of stroke adjustment.
(gxstroke.c)
	- Attempting to draw an arc with zero radius could cause a numeric
exception.  (gspath1.c)
	- Setting the Orientation of a device to null resulted in actually
setting it to a random value.  (gsdparam.c)
	- charpath, stringwidth, and cshow attempted to remap the current
color unnecessarily.  (gschar.c)

Adds the ability to trace calls on the sqrt function (and possibly other math