1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
|
#############################################################################
##
#W system.g GAP Library Alexander Hulpke
##
#H @(#)$Id: system.g,v 4.12.2.5 2004/11/29 12:21:00 sal Exp $
##
#Y Copyright (C) 1996, Lehrstuhl D fuer Mathematik, RWTH Aachen, Germany
#Y (C) 1998 School Math and Comp. Sci., University of St. Andrews, Scotland
#Y Copyright (C) 2002 The GAP Group
##
## This file contains functions that are architecture dependent,
## and the record `GAPInfo', which collects global variables that are needed
## internally.
##
Revision.system_g :=
"@(#)$Id: system.g,v 4.12.2.5 2004/11/29 12:21:00 sal Exp $";
BIND_GLOBAL( "GAPInfo", rec(
# do not edit the following two lines. They get replaced by string matching
# in the distribution wrapper scripts. (Occurrences of `4.dev' and `today'
# get replaced.)
Version := "4.4.4",
Date := "29-November-04",
# The kernel version numbers are expected in the format `<v>.<r>.<p>'.
KernelVersion := KERNEL_VERSION,
NeedKernelVersion := "4.4.4",
Architecture := GAP_ARCHITECTURE,
# paths
RootPaths := GAP_ROOT_PATHS,
UserHome := USER_HOME,
gaprc := GAP_RC_FILE,
DirectoriesLibrary := rec(),
DirectoriesSystemPrograms := DIRECTORIES_SYSTEM_PROGRAMS,
DirectoriesPrograms := false,
DirectoriesTemporary := [],
DirectoryCurrent := false,
# Shall the file `lib/obsolete.g' be read upon initialization?
# (This can be changed in the user's `.gaprc' file.)
ReadObsolete := true,
# the command line options that were given for the current session
CommandLineOptions := rec(),
# the banner that is printed if no `-b' or `-q' option was given
BannerString := "\
\n\
######### ###### ########### ### \n\
############# ###### ############ #### \n\
############## ######## ############# ##### \n\
############### ######## ##### ###### ##### \n\
###### # ######### ##### ##### ###### \n\
###### ########## ##### ##### ####### \n\
##### ##### #### ##### ###### ######## \n\
#### ##### ##### ############# ### #### \n\
##### ####### #### #### ########### #### #### \n\
##### ####### ##### ##### ###### #### #### \n\
##### ####### ##### ##### ##### #############\n\
##### ##### ################ ##### #############\n\
###### ##### ################ ##### #############\n\
################ ################## ##### #### \n\
############### ##### ##### ##### #### \n\
############# ##### ##### ##### #### \n\
######### ##### ##### ##### #### \n\
\n\
Information at: http://www.gap-system.org\n\
Try '?help' for help. See also '?copyright' and '?authors'\n\
\n",
# This holds the maximal number of lines that are reasonably printed
# in `ViewObj' methods.
#T The value can be changed using the function `ViewLength' that is defined
#T in `lib/oper.g' but currently is undocumented.
#T Should it become documented or is it sufficient to document this variable?
ViewLength := 3
) );
GAPInfo.ScanCommandLineOption := function( name, type, default )
if not IsBound( SY_COMMAND_LINE_OPTIONS.( name ) ) then
GAPInfo.CommandLineOptions.( name ):= default;
elif type = "toggle" then
if LEN_LIST( SY_COMMAND_LINE_OPTIONS.( name ) ) mod 2 = 0 then
GAPInfo.CommandLineOptions.( name ):= default;
else
GAPInfo.CommandLineOptions.( name ):= not default;
fi;
elif type = "string" then
# Take the last value for this option.
GAPInfo.CommandLineOptions.( name ):= SY_COMMAND_LINE_OPTIONS.( name )[
LEN_LIST( SY_COMMAND_LINE_OPTIONS.( name ) ) ];
elif type = "strlst" then
# Take all values for this option.
GAPInfo.CommandLineOptions.( name ):= SY_COMMAND_LINE_OPTIONS.( name );
elif type = "modul3" then
# special case for `-g'
GAPInfo.CommandLineOptions.( name ):=
LEN_LIST( SY_COMMAND_LINE_OPTIONS.( name ) ) mod 3;
fi;
end;
GAPInfo.ScanCommandLineOption( "A", "toggle", false );
GAPInfo.ScanCommandLineOption( "B", "string", "" );
GAPInfo.ScanCommandLineOption( "D", "toggle", false );
GAPInfo.ScanCommandLineOption( "E", "toggle", false );
GAPInfo.ScanCommandLineOption( "K", "string", "0" );
GAPInfo.ScanCommandLineOption( "L", "string", "" );
GAPInfo.ScanCommandLineOption( "M", "toggle", false );
GAPInfo.ScanCommandLineOption( "N", "toggle", false );
GAPInfo.ScanCommandLineOption( "O", "toggle", false );
GAPInfo.ScanCommandLineOption( "P", "string", "0" );
GAPInfo.ScanCommandLineOption( "U", "string", "" );
GAPInfo.ScanCommandLineOption( "W", "string", "0" );
GAPInfo.ScanCommandLineOption( "R", "string", "" );
GAPInfo.ScanCommandLineOption( "T", "toggle", false );
GAPInfo.ScanCommandLineOption( "X", "toggle", false );
GAPInfo.ScanCommandLineOption( "Y", "toggle", false );
GAPInfo.ScanCommandLineOption( "a", "string", "0" );
GAPInfo.ScanCommandLineOption( "b", "toggle", false );
GAPInfo.ScanCommandLineOption( "c", "string", "0" );
GAPInfo.ScanCommandLineOption( "e", "toggle", false );
GAPInfo.ScanCommandLineOption( "f", "toggle", false );
GAPInfo.ScanCommandLineOption( "g", "modul3", 0 );
GAPInfo.ScanCommandLineOption( "i", "string", "" );
GAPInfo.ScanCommandLineOption( "l", "strlst", [] );
GAPInfo.ScanCommandLineOption( "m", "string", "24m" );
GAPInfo.ScanCommandLineOption( "n", "toggle", false );
GAPInfo.ScanCommandLineOption( "o", "string", "256m" );
GAPInfo.ScanCommandLineOption( "p", "toggle", false );
GAPInfo.ScanCommandLineOption( "q", "toggle", false );
GAPInfo.ScanCommandLineOption( "r", "toggle", false );
GAPInfo.ScanCommandLineOption( "x", "string", "80" );
GAPInfo.ScanCommandLineOption( "y", "string", "24" );
GAPInfo.ScanCommandLineOption( "z", "string", "20" );
#############################################################################
##
## Administration of Packages
##
#############################################################################
##
#V GAPInfo.PackagesLoaded
##
## This is a mutable record, the component names are the names of those
## packages that are already loaded.
## The component for each package is a list of length three or four,
## the first three entries being the path to the {\GAP} root directory that
## contains the package, the package version, and the package name,
## and the fourth entry being a list used by `CreateCompletionFilesPackage'.
##
## For each package, the value gets bound in the `LoadPackage' call.
## The fourth entry is bound if and only if the package has a `read.g' file
## and if no `read.co' file was used when the package was loaded;
## in this case, the entry has been computed by `ReadOrComplete'.
##
GAPInfo.PackagesLoaded := rec();
#############################################################################
##
#V GAPInfo.PackagesInfo
##
## This is a mutable record, the component names are the names of those
## packages for which the `PackageInfo.g' files have been read.
## (These packages are not necessarily loaded.)
##
GAPInfo.PackagesInfo := rec();
#############################################################################
##
## Remove globals exported by the kernel that are no longer needed.
#T wouldn't it be better to create the record `GAPInfo' with these components
#T in the kernel?
##
for name in [ "KERNEL_VERSION", "GAP_ARCHITECTURE", "GAP_ROOT_PATHS",
"USER_HOME", "GAP_RC_FILE", "DIRECTORIES_SYSTEM_PROGRAMS",
"DEBUG_LOADING" ] do
MAKE_READ_WRITE_GLOBAL( name );
UNBIND_GLOBAL( name );
od;
#############################################################################
##
## identifier that will recognize the Windows and the Mac version
##
BIND_GLOBAL("WINDOWS_ARCHITECTURE",
IMMUTABLE_COPY_OBJ("win"));
BIND_GLOBAL("MACINTOSH_68K_ARCHITECTURE",
IMMUTABLE_COPY_OBJ("MC68020-motorola-macos-mwerksc"));
BIND_GLOBAL("MACINTOSH_PPC_ARCHITECTURE",
IMMUTABLE_COPY_OBJ("PPC-motorola-macos-mwerksc"));
#T the following functions eventually should be more clever. This however
#T will require kernel support and thus is something for later. AH
#############################################################################
##
#F ARCH_IS_MAC()
##
## tests whether {\GAP} is running on a Macintosh under MacOS
BIND_GLOBAL("ARCH_IS_MAC",function()
return GAPInfo.Architecture = MACINTOSH_68K_ARCHITECTURE
or GAPInfo.Architecture = MACINTOSH_PPC_ARCHITECTURE;
end);
#############################################################################
##
#F ARCH_IS_WINDOWS()
##
## tests whether {\GAP} is running on a Windows system.
BIND_GLOBAL("ARCH_IS_WINDOWS",function()
local l;
l:=LEN_LIST( GAPInfo.Architecture );
if l<9 then return false;fi; # trap some unixes with increadibly short
# string name
return GAPInfo.Architecture{[l-6..l-4]} = WINDOWS_ARCHITECTURE;
end);
#############################################################################
##
#F ARCH_IS_UNIX()
##
## tests whether {\GAP} is running on a UNIX system.
BIND_GLOBAL("ARCH_IS_UNIX",function()
return not (ARCH_IS_MAC() or ARCH_IS_WINDOWS());
end);
#############################################################################
##
#V GAPInfo.BytesPerVariable
#V DOUBLE_OBJLEN
##
## `GAPInfo.BytesPerVariable' is the number of bytes used for one `Obj'
## variable.
##
GAPInfo.BytesPerVariable := 4;
# are we a 64 (or more) bit system?
while TNUM_OBJ( 2^((GAPInfo.BytesPerVariable-1)*8) )
= TNUM_OBJ( 2^((GAPInfo.BytesPerVariable+1)*8) ) do
GAPInfo.BytesPerVariable:= GAPInfo.BytesPerVariable + 4;
od;
BIND_GLOBAL( "DOUBLE_OBJLEN", 2*GAPInfo.BytesPerVariable );
#############################################################################
##
#E
|
