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
|
include defs
# gctoi --- convert any radix string to single precision integer
integer function gctoi (str, i, radix)
character str (ARB)
integer i, radix
integer base, v, d, j
external index
integer index
character clower
logical neg
string digits "0123456789abcdef"
v = 0
base = radix
while (str (i) == BLANK | str (i) == TAB)
i = i + 1
neg = (str (i) == MINUS)
if (str (i) == PLUS | str (i) == MINUS)
i = i + 1
if (str (i + 2) == LETR & str (i) == DIG1 & DIG0 <= str(i+1) & str(i+1) <= DIG9
| str (i + 1) == LETR & DIG0 <= str(i) & str(i) <= DIG9) {
base = str (i) - DIG0
j = i
if (str (i + 1) != LETR) {
j = j + 1
base = base * 10 + (str (j) - DIG0)
}
if (base < 2 | base > 16)
base = radix
else
i = j + 2
}
for (; str (i) != EOS; i = i + 1) {
if (DIG0 <= str(i) & str(i) <= DIG9)
d = str (i) - DIG0
else
d = index (digits, clower (str (i))) - 1
if (d < 0 | d >= base)
break
v = v * base + d
}
if (neg)
return (-v)
else
return (+v)
end
|
