/home/uke/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 | | |
10 | | class BigStr; |
11 | | |
12 | | namespace mops { |
13 | | |
14 | | // BigInt library |
15 | | // TODO: Make it arbitrary size. Right now it's int64_t, which is distinct |
16 | | // from int. |
17 | | |
18 | | typedef int64_t BigInt; |
19 | | |
20 | | // For convenience |
21 | | extern const BigInt ZERO; |
22 | | extern const BigInt ONE; |
23 | | extern const BigInt MINUS_ONE; |
24 | | |
25 | | BigStr* ToStr(BigInt b); |
26 | | BigInt FromStr(BigStr* s, int base = 10); |
27 | | |
28 | 1 | inline int BigTruncate(BigInt b) { |
29 | 1 | return static_cast<int>(b); |
30 | 1 | } |
31 | | |
32 | 0 | inline BigInt IntWiden(int b) { |
33 | 0 | return static_cast<BigInt>(b); |
34 | 0 | } |
35 | | |
36 | 0 | inline BigInt FromC(int64_t i) { |
37 | 0 | return i; |
38 | 0 | } |
39 | | |
40 | 0 | inline BigInt FromBool(bool b) { |
41 | 0 | return b ? BigInt(1) : BigInt(0); |
42 | 0 | } |
43 | | |
44 | 1 | inline float ToFloat(BigInt b) { |
45 | | // TODO: test this |
46 | 1 | return static_cast<float>(b); |
47 | 1 | } |
48 | | |
49 | 2 | inline BigInt FromFloat(float f) { |
50 | | // TODO: test this |
51 | 2 | return static_cast<BigInt>(f); |
52 | 2 | } |
53 | | |
54 | 0 | inline BigInt Negate(BigInt b) { |
55 | 0 | return -b; |
56 | 0 | } |
57 | | |
58 | 0 | inline BigInt Add(BigInt a, BigInt b) { |
59 | 0 | return a + b; |
60 | 0 | } |
61 | | |
62 | 0 | inline BigInt Sub(BigInt a, BigInt b) { |
63 | 0 | return a - b; |
64 | 0 | } |
65 | | |
66 | 0 | inline BigInt Mul(BigInt a, BigInt b) { |
67 | 0 | return a * b; |
68 | 0 | } |
69 | | |
70 | 0 | inline BigInt Div(BigInt a, BigInt b) { |
71 | 0 | // Is the behavior of negative values defined in C++? Avoid difference with |
72 | 0 | // Python. |
73 | 0 | DCHECK(a >= 0); |
74 | 0 | DCHECK(b >= 0); |
75 | 0 | return a / b; |
76 | 0 | } |
77 | | |
78 | 0 | inline BigInt Rem(BigInt a, BigInt b) { |
79 | 0 | // Is the behavior of negative values defined in C++? Avoid difference with |
80 | 0 | // Python. |
81 | 0 | DCHECK(a >= 0); |
82 | 0 | DCHECK(b >= 0); |
83 | 0 | return a % b; |
84 | 0 | } |
85 | | |
86 | 0 | inline bool Equal(BigInt a, BigInt b) { |
87 | 0 | return a == b; |
88 | 0 | } |
89 | | |
90 | 0 | inline bool Greater(BigInt a, BigInt b) { |
91 | 0 | return a > b; |
92 | 0 | } |
93 | | |
94 | 0 | inline BigInt LShift(BigInt a, BigInt b) { |
95 | 0 | return a << b; |
96 | 0 | } |
97 | | |
98 | 0 | inline BigInt RShift(BigInt a, BigInt b) { |
99 | 0 | return a >> b; |
100 | 0 | } |
101 | | |
102 | 0 | inline BigInt BitAnd(BigInt a, BigInt b) { |
103 | 0 | return a & b; |
104 | 0 | } |
105 | | |
106 | 0 | inline BigInt BitOr(BigInt a, BigInt b) { |
107 | 0 | return a | b; |
108 | 0 | } |
109 | | |
110 | 0 | inline BigInt BitXor(BigInt a, BigInt b) { |
111 | 0 | return a ^ b; |
112 | 0 | } |
113 | | |
114 | 0 | inline BigInt BitNot(BigInt a) { |
115 | 0 | return ~a; |
116 | 0 | } |
117 | | |
118 | | } // namespace mops |
119 | | |
120 | | #endif // MYCPP_GC_MOPS_H |