/
math_funcs.go
153 lines (131 loc) · 3.96 KB
/
math_funcs.go
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
// Copyright 2015 The Vanadium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package queryfunctions
import (
"math"
ds "v.io/v23/query/engine/datasource"
"v.io/v23/query/engine/internal/conversions"
"v.io/v23/query/engine/internal/queryparser"
)
func ceilingFunc(db ds.Database, off int64, args []*queryparser.Operand) (*queryparser.Operand, error) {
f, err := conversions.ConvertValueToFloat(args[0])
if err != nil {
return nil, err
}
return makeFloatOp(off, math.Ceil(f.Float)), nil
}
func floorFunc(db ds.Database, off int64, args []*queryparser.Operand) (*queryparser.Operand, error) {
f, err := conversions.ConvertValueToFloat(args[0])
if err != nil {
return nil, err
}
return makeFloatOp(off, math.Floor(f.Float)), nil
}
func nanFunc(db ds.Database, off int64, args []*queryparser.Operand) (*queryparser.Operand, error) {
return makeFloatOp(off, math.NaN()), nil
}
func isNanFunc(db ds.Database, off int64, args []*queryparser.Operand) (*queryparser.Operand, error) {
f, err := conversions.ConvertValueToFloat(args[0])
if err != nil {
return nil, err
}
return makeBoolOp(off, math.IsNaN(f.Float)), nil
}
func infFunc(db ds.Database, off int64, args []*queryparser.Operand) (*queryparser.Operand, error) {
i, err := conversions.ConvertValueToInt(args[0])
if err != nil {
return nil, err
}
var sign int
switch {
case i.Int < 0:
sign = -1
case i.Int == 0:
sign = 0
default:
sign = 1
}
return makeFloatOp(off, math.Inf(sign)), nil
}
func isInfFunc(db ds.Database, off int64, args []*queryparser.Operand) (*queryparser.Operand, error) {
f, err := conversions.ConvertValueToFloat(args[0])
if err != nil {
return nil, err
}
i, err := conversions.ConvertValueToInt(args[1])
if err != nil {
return nil, err
}
var sign int
switch {
case i.Int < 0:
sign = -1
case i.Int == 0:
sign = 0
default:
sign = 1
}
return makeBoolOp(off, math.IsInf(f.Float, sign)), nil
}
func logFunc(db ds.Database, off int64, args []*queryparser.Operand) (*queryparser.Operand, error) {
f, err := conversions.ConvertValueToFloat(args[0])
if err != nil {
return nil, err
}
return makeFloatOp(off, math.Log(f.Float)), nil
}
func log10Func(db ds.Database, off int64, args []*queryparser.Operand) (*queryparser.Operand, error) {
f, err := conversions.ConvertValueToFloat(args[0])
if err != nil {
return nil, err
}
return makeFloatOp(off, math.Log10(f.Float)), nil
}
func powFunc(db ds.Database, off int64, args []*queryparser.Operand) (*queryparser.Operand, error) {
x, err := conversions.ConvertValueToFloat(args[0])
if err != nil {
return nil, err
}
y, err := conversions.ConvertValueToFloat(args[1])
if err != nil {
return nil, err
}
return makeFloatOp(off, math.Pow(x.Float, y.Float)), nil
}
func pow10Func(db ds.Database, off int64, args []*queryparser.Operand) (*queryparser.Operand, error) {
x, err := conversions.ConvertValueToInt(args[0])
if err != nil {
return nil, err
}
return makeFloatOp(off, math.Pow10(int(x.Int))), nil
}
func modFunc(db ds.Database, off int64, args []*queryparser.Operand) (*queryparser.Operand, error) {
x, err := conversions.ConvertValueToFloat(args[0])
if err != nil {
return nil, err
}
y, err := conversions.ConvertValueToFloat(args[1])
if err != nil {
return nil, err
}
return makeFloatOp(off, math.Mod(x.Float, y.Float)), nil
}
func truncateFunc(db ds.Database, off int64, args []*queryparser.Operand) (*queryparser.Operand, error) {
f, err := conversions.ConvertValueToFloat(args[0])
if err != nil {
return nil, err
}
return makeFloatOp(off, math.Trunc(f.Float)), nil
}
func remainderFunc(db ds.Database, off int64, args []*queryparser.Operand) (*queryparser.Operand, error) {
x, err := conversions.ConvertValueToFloat(args[0])
if err != nil {
return nil, err
}
y, err := conversions.ConvertValueToFloat(args[1])
if err != nil {
return nil, err
}
return makeFloatOp(off, math.Remainder(x.Float, y.Float)), nil
}