/home/andy/git/oilshell/oil/mycpp/gc_mops.h
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1 | | // gc_mops.h - corresponds to mycpp/mops.py |
2 | | |
3 | | #ifndef MYCPP_GC_MOPS_H |
4 | | #define MYCPP_GC_MOPS_H |
5 | | |
6 | | #include <stdint.h> |
7 | | |
8 | | #include "mycpp/common.h" // DCHECK |
9 | | #include "mycpp/gc_tuple.h" |
10 | | |
11 | | class BigStr; |
12 | | |
13 | | namespace mops { |
14 | | |
15 | | // BigInt library |
16 | | // TODO: Make it arbitrary size. Right now it's int64_t, which is distinct |
17 | | // from int. |
18 | | |
19 | | typedef int64_t BigInt; |
20 | | |
21 | | // For convenience |
22 | | extern const BigInt ZERO; |
23 | | extern const BigInt ONE; |
24 | | extern const BigInt MINUS_ONE; |
25 | | extern const BigInt MINUS_TWO; |
26 | | |
27 | | BigStr* ToStr(BigInt b); |
28 | | BigStr* ToOctal(BigInt b); |
29 | | BigStr* ToHexUpper(BigInt b); |
30 | | BigStr* ToHexLower(BigInt b); |
31 | | |
32 | | BigInt FromStr(BigStr* s, int base = 10); |
33 | | Tuple2<bool, BigInt> FromFloat(double f); |
34 | | |
35 | 3 | inline int BigTruncate(BigInt b) { |
36 | 3 | return static_cast<int>(b); |
37 | 3 | } |
38 | | |
39 | 1 | inline BigInt IntWiden(int b) { |
40 | 1 | return static_cast<BigInt>(b); |
41 | 1 | } |
42 | | |
43 | 0 | inline BigInt FromC(int64_t i) { |
44 | 0 | return i; |
45 | 0 | } |
46 | | |
47 | 0 | inline BigInt FromBool(bool b) { |
48 | 0 | return b ? BigInt(1) : BigInt(0); |
49 | 0 | } |
50 | | |
51 | 14 | inline double ToFloat(BigInt b) { |
52 | 14 | return static_cast<double>(b); |
53 | 14 | } |
54 | | |
55 | 0 | inline BigInt Negate(BigInt b) { |
56 | 0 | return -b; |
57 | 0 | } |
58 | | |
59 | 3 | inline BigInt Add(BigInt a, BigInt b) { |
60 | 3 | return a + b; |
61 | 3 | } |
62 | | |
63 | 3 | inline BigInt Sub(BigInt a, BigInt b) { |
64 | 3 | return a - b; |
65 | 3 | } |
66 | | |
67 | 0 | inline BigInt Mul(BigInt a, BigInt b) { |
68 | 0 | return a * b; |
69 | 0 | } |
70 | | |
71 | 0 | inline BigInt Div(BigInt a, BigInt b) { |
72 | 0 | // Same check as in mops.py |
73 | 0 | DCHECK(b != 0); // divisor can't be zero |
74 | 0 | return a / b; |
75 | 0 | } |
76 | | |
77 | 0 | inline BigInt Rem(BigInt a, BigInt b) { |
78 | 0 | // Same check as in mops.py |
79 | 0 | DCHECK(b != 0); // divisor can't be zero |
80 | 0 | return a % b; |
81 | 0 | } |
82 | | |
83 | 1 | inline bool Equal(BigInt a, BigInt b) { |
84 | 1 | return a == b; |
85 | 1 | } |
86 | | |
87 | 0 | inline bool Greater(BigInt a, BigInt b) { |
88 | 0 | return a > b; |
89 | 0 | } |
90 | | |
91 | 3 | inline BigInt LShift(BigInt a, BigInt b) { |
92 | 3 | DCHECK(b >= 0); |
93 | 0 | return a << b; |
94 | 3 | } |
95 | | |
96 | 0 | inline BigInt RShift(BigInt a, BigInt b) { |
97 | 0 | DCHECK(b >= 0); |
98 | 0 | return a >> b; |
99 | 0 | } |
100 | | |
101 | 0 | inline BigInt BitAnd(BigInt a, BigInt b) { |
102 | 0 | return a & b; |
103 | 0 | } |
104 | | |
105 | 0 | inline BigInt BitOr(BigInt a, BigInt b) { |
106 | 0 | return a | b; |
107 | 0 | } |
108 | | |
109 | 0 | inline BigInt BitXor(BigInt a, BigInt b) { |
110 | 0 | return a ^ b; |
111 | 0 | } |
112 | | |
113 | 0 | inline BigInt BitNot(BigInt a) { |
114 | 0 | return ~a; |
115 | 0 | } |
116 | | |
117 | | } // namespace mops |
118 | | |
119 | | #endif // MYCPP_GC_MOPS_H |