/[cmucl]/src/general-info/release-19e.txt
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Wed Oct 10 01:48:16 2007 UTC (6 years, 6 months ago) by rtoy
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1 rtoy 1.1 ========================== C M U C L 19 e =============================
2    
3     [--- WORK IN PROGRESS --- DO NOT DISTRIBUTE ---]
4    
5     The CMUCL project is pleased to announce the release of CMUCL 19e.
6     This is a major release which contains numerous enhancements and
7     bugfixes from the 19d release.
8    
9     CMUCL is a free, high performance implementation of the Common Lisp
10     programming language which runs on most major Unix platforms. It
11     mainly conforms to the ANSI Common Lisp standard. CMUCL provides a
12     sophisticated native code compiler; a powerful foreign function
13     interface; an implementation of CLOS, the Common Lisp Object System,
14     which includes multimethods and a metaobject protocol; a source-level
15     debugger and code profiler; and an Emacs-like editor implemented in
16     Common Lisp. CMUCL is maintained by a team of volunteers collaborating
17     over the Internet, and is mostly in the public domain.
18    
19     New in this release:
20    
21 rtoy 1.13 * Supported system:
22     - Support for Mac OS X/Intel has been added.
23 rtoy 1.1
24     * Feature enhancements:
25 rtoy 1.8 - Support for dynamic-extent added for ppc. However, it suffers
26     from the same problems with dynamic-extent as other platforms,
27     so it is disabled by default. Tests indicate that it does work
28     in simple situations.
29     - PARSE-TIME recognizes the format produced by C asctime/ctime.
30     (This change may break some other less commonly used patterns.)
31 rtoy 1.10 - PARSE-TIME recognizes and discards any microseconds.
32     - PARSE-TIME checks that a specified day of the week matches the
33     actual day of the week given in the date. An error is signaled
34     if they are inconsistent.
35 fgilham 1.12 - New option to SAVE-LISP allows creating executable Lisp images
36     that do not require a runtime loader.
37     Syntax: (save-lisp "filename" :executable t)
38     Currently supported on FreeBSD and Linux; work on a Solaris
39     version is underway.
40     Limitations: depends on files in "library:" to dump new
41     executable images.
42 rtoy 1.15 - CMUCL's version of CLX has been replaced with telent CLX.
43 rtoy 1.1
44     * ANSI compliance fixes:
45 rtoy 1.3 - BOA constructors with &AUX variables are handled better now.
46 rtoy 1.6 - SHADOW accepts characters now.
47 rtoy 1.9 - Default initargs are now passed correctly to initialize-instance
48     and shared-initialize.
49 rtoy 1.1
50     * Bugfixes:
51 rtoy 1.2 - Floating-point traps are now handled on ppc. Previously, no
52     traps were signalled and SET-FLOATING-POINT-MODES did nothing.
53 rtoy 1.3 - FILE-POSITION no longer returns negative values for mapped
54     file-simple-stream's.
55 rtoy 1.9 - Potential Version numbers that start with a leading 0 are no
56     longer treated as version numbers. Hence, "foo.~1~" has name
57     "foo", type nil, and version 1, but "foo.~01~" has type "~01~"
58     and version :NEWEST.
59 rtoy 1.5 - A bug in type derivation for EXPT has been fixed. (expt x y)
60     for x of type (double-float (0d0) 1d0) and y of type
61     (double-float (0d0)) now returns (or (member 0d0) (double-float
62     (0d0) 1d0)) instead of (double-float 0d0 1d0), i.e., -0d0 is not
63     in the range.
64 rtoy 1.6 - On sparc, the decoding of a trapping FP instruction is correct
65     now. Previously the wrong instruction was decoded, which
66     produced the wrong operation and operands in the arithmetic
67     error handler.
68 rtoy 1.8 - Fix issue with UNIX:UNIX-MMAP handling of "large" addresses that
69     appeared to be negative numbers.
70 rtoy 1.9 - DOUBLE-DOUBLE-FLOAT fixes:
71     o Converting negative rationals to double-double-float's doesn't
72     produce wrong answers anymore.
73     o Conversion of bignums to double-double-floats preserves more
74     bits of the bignum now. This allows for read/print consistency
75     for this particular case. (The general case is still broken.)
76     o (float <negative bignum> 1w0) no longer returns a positive
77     result.
78     o Some issues with creation of DOUBLE-DOUBLE-FLOAT and (COMPLEX
79     DOUBLE-DOUBLE-FLOAT) have been fixed on sparc, ppc, and x86.
80     These seem to work, except there appears to be some bugs on x86
81     when compiling at speed 3 and safety 0.
82     o (INTEGER-DECODE-FLOAT <double-double-float>) was sometimes
83     returning the wrong integer value because the two components had
84     the wrong sign.
85     o Some issues with debugger printing out DOUBLE-DOUBLE-FLOATs and
86     (COMPLEX DOUBLE-DOUBLE-FLOAT)'s have been fixed.
87 rtoy 1.10 o CLOS now recognizes that (COMPLEX DOUBLE-DOUBLE-FLOAT) is a
88     valid built-in class instead of a random object.
89     o Branch cuts for ASIN and ATANH for double-double-float's
90     should match the branches for double-float's.
91     o ATAN2 should correctly handle signed double-double-float
92     zeroes.
93     o FASL files containing -0w0 are now converted to -0w0 instead
94     of 0w0.
95     o SIN and TAN return -0w0 when the argument is -0w0.
96     Previously, they returned 0w0.
97 rtoy 1.11 o Signed zeroes are handled better for addition, subtraction,
98     and multiplication. That is, the correct signed zero is
99     returned now.
100     o Overflow in addition, multiplication, and division returns
101     infinity if traps are disabled.
102 rtoy 1.14 o EQL supports DOUBLE-DOUBLE-FLOAT's now.
103 rtoy 1.19 o The printer and reader should now be consistent for
104     double-double-floats.
105     o Conversion of bignums and ratios to double-double-floats
106     should be more accurate.
107 rtoy 1.10 - The assembler for ppc had some arguments for some instructions
108     in the wrong order, producing the wrong effect.
109 rtoy 1.11 - When making displaced arrays, the element types are checked to
110     see if they are type equivalent. If not, an error is signaled.
111     - The reader for #= and ## has been enhanced to be much faster for
112     cases with a large number of shared objects. However, it is also
113     somewhat slower for simple cases.
114 rtoy 1.16 - #p"..." now has a namestring and is treated as a pathname with
115     name ".." and type "".
116     - #p"..a" erroneously had directory (:relative). This has been
117     fixed so that directory = nil, name = ".", and type = "a".
118 rtoy 1.17 - Untracing of flet/labels functions now work.
119     - Compiling code using SIGNUM no longer causes a compiler error.
120     The defoptimizer for SIGNUM was missing a case for
121     double-double-float.
122     - MAPHASH no longer causes a type-error when the mapping function
123     calls (setf gethash) on the same table.
124 rtoy 1.18 - NOTINLINE declarations are honored for local functions even if
125     they only have only one use. Previously, these would be inlined
126     anyway. This allows tracing of such functions.
127 rtoy 1.16
128 rtoy 1.1 * Trac Tickets:
129 rtoy 1.4 - #8 fixed so logs of bignums and ratios that won't fit into a
130     float can be computed, instead of signalling an error.
131 rtoy 1.9 - #9 fixed. An error is generated if the number of days doesn't
132     match the number of days in the given month.
133 rtoy 1.10 - #10 fixed. ROUND should now return correct answers for floats
134     bigger than most-positive-fixnum.
135 rtoy 1.14 - #11 fixed. EQL handles double-double-float's correctly now.
136 rtoy 1.19 - #1 fixed. prin1 and ~E should produce the same results.
137     - #12 fixed. (format t "~10,1,2,0,'*,,'DE" 1d-6) prints "0.1D-05"
138     now.
139 rtoy 1.1
140     * Other changes:
141 rtoy 1.15 - UNIX:UNIX-ERRNO accesses the thread errno value instead of the
142     global errno value.
143 rtoy 1.1
144     * Improvements to the PCL implementation of CLOS:
145 rtoy 1.2 - Forward-referenced classes are allowed.
146 rtoy 1.1
147     * Changes to rebuilding procedure:
148    
149     This release is not binary compatible with code compiled using CMUCL
150     19d; you will need to recompile FASL files.
151    
152     See <URL:http://www.cons.org/cmucl/> for download information,
153     guidelines on reporting bugs, and mailing list details.
154    
155    
156     We hope you enjoy using this release of CMUCL!
157    

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