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
|
c r1mach from portlib 03/25/82
real function r1mach(i)
c
c single-precision machine constants
c r1mach(1) = b**(emin-1), the smallest positive magnitude.
c
c r1mach(2) = b**emax*(1 - b**(-t)), the largest magnitude.
c
c r1mach(3) = b**(-t), the smallest relative spacing.
c
c r1mach(4) = b**(1-t), the largest relative spacing.
c
c r1mach(5) = log10(b)
c
c to alter this function for a particular environment,
c the desired set of data statements should be activated by
c removing the c from column 1.
c
c where possible, octal or hexadecimal constants have been used
c to specify the constants exactly which has in some cases
c required the use of equivalent integer arrays.
c
integer small(2)
integer large(2)
integer right(2)
integer diver(2)
integer log10(2)
c
real rmach(5)
c
equivalence (rmach(1),small(1))
equivalence (rmach(2),large(1))
equivalence (rmach(3),right(1))
equivalence (rmach(4),diver(1))
equivalence (rmach(5),log10(1))
c
c machine constants for the burroughs 1700 system.
c
c data rmach(1) / z400800000 /
c data rmach(2) / z5ffffffff /
c data rmach(3) / z4e9800000 /
c data rmach(4) / z4ea800000 /
c data rmach(5) / z500e730e8 /
c
c machine constants for the burroughs 5700/6700/7700 systems.
c
c data rmach(1) / 01771000000000000 /
c data rmach(2) / o0777777777777777 /
c data rmach(3) / o1311000000000000 /
c data rmach(4) / o1301000000000000 /
c data rmach(5) / o1157163034761675 /
c
c machine constants for the cdc 6000/7000 series.
c
c data rmach(1) / 00014000000000000000b /
c data rmach(2) / 37767777777777777777b /
c data rmach(3) / 16404000000000000000b /
c data rmach(4) / 16414000000000000000b /
c data rmach(5) / 17164642023241175720b /
c
c machine constants for the cray 1
c
c data rmach(1) / 200004000000000000000b /
c data rmach(2) / 577777777777777777777b /
c data rmach(3) / 377214000000000000000b /
c data rmach(4) / 377224000000000000000b /
c data rmach(5) / 377774642023241175720b /
c
c machine constants for the data general eclipse s/200
c
c note - it may be appropriate to include the following card -
c static rmach(5)
c
c data small/20k,0/,large/77777k,177777k/
c data right/35420k,0/,diver/36020k,0/
c data log10/40423k,42023k/
c
c machine constants for the harris 220
c
c data small(1),small(2) / "20000000, "00000201 /
c data large(1),large(2) / "37777777, "00000177 /
c data right(1),right(2) / "20000000, "00000352 /
c data diver(1),diver(2) / "20000000, "00000353 /
c data log10(1),log10(2) / "23210115, "00000377 /
c
c machine constants for the honeywell 600/6000 series.
c
c data rmach(1) / o402400000000 /
c data rmach(2) / o376777777777 /
c data rmach(3) / o714400000000 /
c data rmach(4) / o716400000000 /
c data rmach(5) / o776464202324 /
c
c machine constants for the ibm 360/370 series,
c the xerox sigma 5/7/9 and the sel systems 85/86.
c
c data rmach(1) / z00100000 /
c data rmach(2) / z7fffffff /
c data rmach(3) / z3b100000 /
c data rmach(4) / z3c100000 /
c data rmach(5) / z41134413 /
c
c machine constants for the pdp-10 (ka or ki processor).
c
c data rmach(1) / "000400000000 /
c data rmach(2) / "377777777777 /
c data rmach(3) / "146400000000 /
c data rmach(4) / "147400000000 /
c data rmach(5) / "177464202324 /
c
c machine constants for pdp-11 fortran"s supporting
c 32-bit integers (expressed in integer and octal).
c
c KPNO -- Hex machine constants for the VAX, which stores the bytes of
c a real variable in a funny order.
c
c No standard hex constants in fortran!!!
c data small(1) / x'00000080' /
c data large(1) / x'ffff7fff' /
c data right(1) / x'00003480' /
c data diver(1) / x'00003500' /
c data log10(1) / x'209b359a' /
c
c data small(1) / 128 /
c data large(1) / -32769 /
c data right(1) / 13440 /
c data diver(1) / 13696 /
c data log10(1) / 547042714 /
c
c data small(1) / 8388608 /
c data large(1) / 2147483647 /
c data right(1) / 880803840 /
c data diver(1) / 889192448 /
c data log10(1) / 1067065499 /
c
c data rmach(1) / o00040000000 /
c data rmach(2) / o17777777777 /
c data rmach(3) / o06440000000 /
c data rmach(4) / o06500000000 /
c data rmach(5) / o07746420233 /
c
c machine constants for pdp-11 fortran"s supporting
c 16-bit integers (expressed in integer and octal).
c
c data small(1),small(2) / 128, 0 /
c data large(1),large(2) / 32767, -1 /
c data right(1),right(2) / 13440, 0 /
c data diver(1),diver(2) / 13568, 0 /
c data log10(1),log10(2) / 16282, 8347 /
c
c data small(1),small(2) / o000200, o000000 /
c data large(1),large(2) / o077777, o177777 /
c data right(1),right(2) / o032200, o000000 /
c data diver(1),diver(2) / o032400, o000000 /
c data log10(1),log10(2) / o037632, o020233 /
c
c machine constants for the univac 1100 series.
c
c data rmach(1) / o000400000000 /
c data rmach(2) / o377777777777 /
c data rmach(3) / o146400000000 /
c data rmach(4) / o147400000000 /
c data rmach(5) / o177464202324 /
c
c machine constants for IEEE single precision floating point on 68000.
c
c data small(1) / x'100000' /
c data large(1) / x'7EFFFFFF' /
c data right(1) / x'33800000' /
c data diver(1) / x'34000000' /
c data log10(1) / x'3F317218' /
c
data small(1) / 1048576 /
data large(1) / 2130706431 /
data right(1) / 864026624 /
data diver(1) / 872415232 /
data log10(1) / 1060205080 /
c
c-----------------------------------------------------------------------
c delete next two statements after supplying the proper data statements.
c data rmach(5) /0./
c if (rmach(5) .eq. 0.0)
c 1call uliber(2,45h r1mach - machine dependent constants not set,45)
c-----------------------------------------------------------------------
c if (i .lt. 1 .or. i .gt. 5)
c 1 call uliber (1,34h error in r1mach - i out of bounds,34)
c
r1mach = rmach(i)
return
c
end
|
