source: trunk/source/level-1/l1-init.lisp @ 13773

Last change on this file since 13773 was 13529, checked in by gb, 10 years ago

Define *least-positive-bignum*.

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1;;;-*-Mode: LISP; Package: CCL -*-
2;;;
3;;;   Copyright (C) 2009 Clozure Associates
4;;;   Copyright (C) 1994-2001 Digitool, Inc
5;;;   This file is part of Clozure CL. 
6;;;
7;;;   Clozure CL is licensed under the terms of the Lisp Lesser GNU Public
8;;;   License , known as the LLGPL and distributed with Clozure CL as the
9;;;   file "LICENSE".  The LLGPL consists of a preamble and the LGPL,
10;;;   which is distributed with Clozure CL as the file "LGPL".  Where these
11;;;   conflict, the preamble takes precedence. 
12;;;
13;;;   Clozure CL is referenced in the preamble as the "LIBRARY."
14;;;
15;;;   The LLGPL is also available online at
16;;;   http://opensource.franz.com/preamble.html
17
18(in-package "CCL")
19
20(eval-when (:compile-toplevel :execute :load-toplevel)
21
22(defconstant most-positive-short-float (make-short-float-from-fixnums (1- (ash 1 23)) 254 0))
23(defconstant most-negative-short-float (make-short-float-from-fixnums (1- (ash 1 23)) 254 -1))
24(defconstant most-positive-single-float (make-short-float-from-fixnums (1- (ash 1 23)) 254 0))
25(defconstant most-negative-single-float (make-short-float-from-fixnums (1- (ash 1 23)) 254 -1))
26
27
28(defconstant least-positive-short-float (make-short-float-from-fixnums 1 0 0))
29(defconstant least-negative-short-float (make-short-float-from-fixnums 1 0 -1))
30(defconstant least-positive-single-float (make-short-float-from-fixnums 1 0 0))
31(defconstant least-negative-single-float (make-short-float-from-fixnums 1 0 -1))
32
33(defconstant short-float-epsilon (make-short-float-from-fixnums 1 103 0))
34(defconstant short-float-negative-epsilon (make-short-float-from-fixnums 1 102 0))
35(defconstant single-float-epsilon (make-short-float-from-fixnums 1 103 0))
36(defconstant single-float-negative-epsilon (make-short-float-from-fixnums 1 102 0))
37
38(defconstant least-positive-normalized-short-float (make-short-float-from-fixnums 1 1 0))
39(defconstant least-negative-normalized-short-float (make-short-float-from-fixnums 1 1 -1))
40(defconstant least-positive-normalized-single-float (make-short-float-from-fixnums 1 1 0))
41(defconstant least-negative-normalized-single-float (make-short-float-from-fixnums 1 1 -1))
42
43(let ((bigfloat (make-float-from-fixnums #x1ffffff #xfffffff #x7fe 0)))
44  ; do it this way if you want to be able to compile before reading floats works 
45  (defconstant most-positive-double-float bigfloat)
46  (defconstant most-positive-long-float bigfloat)
47  )
48
49(let ((littleposfloat (make-float-from-fixnums 0 1 0 0 )))
50  (defconstant least-positive-double-float littleposfloat)
51  (defconstant least-positive-long-float littleposfloat)
52  )
53
54(let ((littlenegfloat (make-float-from-fixnums 0 1 0 -1))) 
55  (defconstant least-negative-double-float littlenegfloat)
56  (defconstant least-negative-long-float littlenegfloat)
57  )
58
59(let ((bignegfloat (make-float-from-fixnums #x1ffffff #xfffffff #x7fe -1)))
60  (defconstant most-negative-double-float bignegfloat)
61  (defconstant most-negative-long-float bignegfloat)
62  )
63
64(let ((eps (make-float-from-fixnums #x1000000 1 #x3ca 0))) ;was wrong
65  (defconstant double-float-epsilon eps)
66  (defconstant long-float-epsilon eps)
67  )
68
69(let ((eps- (make-float-from-fixnums #x1000000 1 #x3c9 1)))
70  (defconstant double-float-negative-epsilon eps-)
71  (defconstant long-float-negative-epsilon eps-)
72  )
73
74(let ((norm (make-float-from-fixnums 0 0 1 0)))
75  (defconstant least-positive-normalized-double-float norm)
76  (defconstant least-positive-normalized-long-float norm)
77  )
78
79(let ((norm- (make-float-from-fixnums 0 0 1 -1)))
80  (defconstant least-negative-normalized-double-float norm-)
81  (defconstant least-negative-normalized-long-float norm-)
82  )
83
84(defconstant pi (make-float-from-fixnums #x921fb5 #x4442d18 #x400 0))
85
86)
87
88
89
90(defconstant boole-clr 0
91  "Boole function op, makes BOOLE return 0.")
92(defconstant boole-set 1
93  "Boole function op, makes BOOLE return -1.")
94(defconstant boole-1 2
95  "Boole function op, makes BOOLE return integer1.")
96(defconstant boole-2 3
97  "Boole function op, makes BOOLE return integer2.")
98(defconstant boole-c1 4
99  "Boole function op, makes BOOLE return complement of integer1.")
100(defconstant boole-c2 5
101  "Boole function op, makes BOOLE return complement of integer2.")
102(defconstant boole-and 6
103  "Boole function op, makes BOOLE return logand of integer1 and integer2.")
104(defconstant boole-ior 7
105  "Boole function op, makes BOOLE return logior of integer1 and integer2.")
106(defconstant boole-xor 8
107  "Boole function op, makes BOOLE return logxor of integer1 and integer2.")
108(defconstant boole-eqv 9
109  "Boole function op, makes BOOLE return logeqv of integer1 and integer2.")
110(defconstant boole-nand 10
111  "Boole function op, makes BOOLE return log nand of integer1 and integer2.")
112(defconstant boole-nor 11
113  "Boole function op, makes BOOLE return lognor of integer1 and integer2.")
114(defconstant boole-andc1 12
115  "Boole function op, makes BOOLE return logandc1 of integer1 and integer2.")
116(defconstant boole-andc2 13
117  "Boole function op, makes BOOLE return logandc2 of integer1 and integer2.")
118(defconstant boole-orc1 14
119  "Boole function op, makes BOOLE return logorc1 of integer1 and integer2.")
120(defconstant boole-orc2 15
121  "Boole function op, makes BOOLE return logorc2 of integer1 and integer2.")
122
123
124
125(defconstant internal-time-units-per-second #+64-bit-target 1000000 #-64-bit-target 1000
126  "The number of internal time units that fit into a second. See
127  GET-INTERNAL-REAL-TIME and GET-INTERNAL-RUN-TIME.")
128
129(defconstant char-code-limit #.(arch::target-char-code-limit
130                                (backend-target-arch *target-backend*))
131  "the upper exclusive bound on values produced by CHAR-CODE")
132
133(defconstant array-rank-limit (floor #x8000 target::node-size)
134  "the exclusive upper bound on the rank of an array")
135(defconstant multiple-values-limit 200
136  "The exclusive upper bound on the number of multiple VALUES that you can
137  return.")
138(defconstant lambda-parameters-limit (floor #x8000 target::node-size)
139  "The exclusive upper bound on the number of parameters which may be specifed
140  in a given lambda list. This is actually the limit on required and &OPTIONAL
141  parameters. With &KEY and &AUX you can get more.")
142(defconstant call-arguments-limit #+ppc-target (floor #x8000 target::node-size)
143                                  #-ppc-target #x10000
144  "The exclusive upper bound on the number of arguments which may be passed
145  to a function, including &REST args."
146)
147
148; Currently, vectors can be at most (expt 2 22) bytes, and
149; the largest element (double-float or long-float) is 8 bytes:
150#| to get largest element size...
151(apply #'max (mapcar #'(lambda (type)
152                         (%vect-byte-size (make-array 1 :element-type type)))
153                     *cl-types*))
154|#
155
156(defconstant array-dimension-limit array-total-size-limit
157  "the exclusive upper bound on any given dimension of an array")
158
159(defconstant most-positive-fixnum target::target-most-positive-fixnum
160  "the fixnum closest in value to positive infinity")
161(defconstant most-negative-fixnum target::target-most-negative-fixnum
162  "the fixnum closest in value to negative infinity")
163
164(defstatic *least-positive-bignum* (1+ target::target-most-positive-fixnum)
165  "used internally; value should be treated as a constant")
166
167
168(defconstant lambda-list-keywords 
169  '(&OPTIONAL &REST &AUX &KEY &ALLOW-OTHER-KEYS &BODY &ENVIRONMENT &WHOLE)
170  "symbols which are magical in a lambda list")
171
172(defstatic *type-system-initialized* nil)
173
174(defparameter %toplevel-catch% ':toplevel)
175
176(defvar *read-default-float-format* 'single-float)
177
178(defvar *read-suppress* nil
179  "Suppress most interpreting in the reader when T.")
180
181(defvar *read-base* 10.
182  "the radix that Lisp reads numbers in")
183
184
185(defparameter *warn-if-redefine-kernel* nil
186  "When true, attempts to redefine (via DEFUN or DEFMETHOD) functions and
187methods that are marked as being predefined signal continuable errors.")
188
189(defvar *next-screen-context-lines* 2 "Number of lines to show of old screen
190  after a scroll-up or scroll-down.")
191
192(defparameter *compiling-file* nil 
193  "Name of outermost file being compiled or NIL if not compiling a file.")
194
195(defvar *eval-fn-name* nil)
196
197
198(defvar *compile-definitions* t
199  "When non-NIL and the evaluator's lexical environment contains no
200  lexical entities, causes FUNCTION and NFUNCTION forms to be compiled.")
201#|
202(defvar *fast-eval* ()
203  "If non-nil, compile-and-call any forms which would be expensive to evaluate.")
204|#
205(defvar *declaration-handlers* ())
206
207
208(defvar *lisp-system-pointer-functions* nil)
209(defvar *lisp-user-pointer-functions* nil)
210(defvar *lisp-cleanup-functions* nil)   ; list of (0-arg) functions to call before quitting Lisp
211(defvar *lisp-startup-functions* nil)   ; list of funs to call after startup.
212(defvar %lisp-system-fixups% nil)
213
214
215(setf (*%saved-method-var%*) nil)
216
217; The GC expects these to be NIL or a function of no args
218(defvar *pre-gc-hook* nil)
219(defvar *post-gc-hook* nil)
220
221; These are used by add-gc-hook, delete-gc-hook
222(defvar *pre-gc-hook-list* nil)
223(defvar *post-gc-hook-list* nil)
224
225(defvar *backtrace-dialogs* nil)
226;(defvar *stepper-running* nil)
227(defparameter *last-mouse-down-time* 0)
228(defparameter *last-mouse-down-position* 0)
229
230(defvar %handlers% ())
231
232
233#|
234(defvar %restarts% (list (list (%cons-restart 'abort
235                                              #'(lambda (&rest ignore)
236                                                  (declare (ignore ignore))
237                                                  (throw :toplevel nil))
238                                              "Restart the toplevel loop."
239                                              nil
240                                              nil))))
241|#
242
243(defvar %restarts% nil)
244
245(defvar ccl::*kernel-restarts* nil)
246(defvar *condition-restarts* nil "explicit mapping between c & r")
247(declaim (list %handlers% %restarts% ccl::*kernel-restarts* *condition-restarts*))
248
249
250
251
252(defparameter *%periodic-tasks%* nil)
253(defparameter *dribble-stream* nil)
254
255(defconstant *keyword-package* *keyword-package*)
256(defconstant *common-lisp-package* *common-lisp-package*)
257(defconstant *ccl-package* *ccl-package*)
258
259(defparameter *load-print* nil "the default for the :PRINT argument to LOAD")
260(defparameter *loading-files* nil)
261(defparameter *break-level* 0)
262(defparameter *last-break-level* 0)
263(defparameter *warn-if-redefine* nil)
264(defvar *record-source-file*)           ; set in l1-utils.
265(defparameter *level-1-loaded* nil)     ; set t by l1-boot
266(defparameter *save-definitions* nil)
267(defparameter *save-local-symbols* t)
268(defparameter *save-source-locations* T
269  "Controls whether source location information is saved, both for definitions (names) and
270in function objects.
271
272If NIL we don't store any source locations (other than the filename if *record-source-file* is non-NIL).
273
274If T we store as much source location information as we have available.
275
276If :NO-TEXT we don't store a copy of the original source text.  This is a space optimization useful
277for compiling files that are not expected to change.")
278
279(defparameter *record-pc-mapping* t "True to record pc -> source mapping (but only if
280*save-source-locations* is also true)")
281
282(defvar *modules* nil
283  "This is a list of module names that have been loaded into Lisp so far.
284   The names are case sensitive strings.  It is used by PROVIDE and REQUIRE.")
285
286
287
288
289
290(defparameter *eof-value* (cons nil nil))
291
292(defvar *gc-event-status-bits*)         ; also initialized by kernel
293
294(defparameter *top-listener* nil)
295
296
297
298
299
300
301
302(defvar *listener-indent* nil)
303
304(defparameter *autoload-lisp-package* nil)   ; Make 'em suffer
305(defparameter *apropos-case-sensitive-p* nil)
306
307(defloadvar *total-gc-microseconds* (let* ((timeval-size
308                                            #.(%foreign-type-or-record-size
309                                               :timeval :bytes))
310                                           (p (malloc (* 5 timeval-size))))
311                                      (#_memset p 0 (* 5 timeval-size))
312                                      p))
313
314
315(defloadvar *total-bytes-freed* (let* ((p (malloc 8)))
316                                  (setf (%get-long p 0) 0
317                                        (%get-long p 4) 0)
318                                  p))
319
320
321
322(defvar *terminal-character-encoding-name* nil
323  "NIL (implying :ISO-8859-1), or a keyword which names a defined
324character encoding to be used for *TERMINAL-IO* and other predefined
325initial streams.  The value of *TERMINAL-CHARACTER-ENCODING-NAME*
326persists across calls to SAVE-APPLICATION; it can be specified via
327the command-line argument --terminal-encoding (-K)")
328
329
330(defconstant +null-ptr+ (%null-ptr))
331
332;;; end of L1-init.lisp
333
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