File: builtin_math.go

package info (click to toggle)
golang-github-robertkrimen-otto 0.0~git20200922.ef014fd-1
  • links: PTS, VCS
  • area: main
  • in suites: bullseye, sid
  • size: 1,796 kB
  • sloc: perl: 1,227; makefile: 79
file content (151 lines) | stat: -rw-r--r-- 3,545 bytes parent folder | download | duplicates (2)
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
package otto

import (
	"math"
	"math/rand"
)

// Math

func builtinMath_abs(call FunctionCall) Value {
	number := call.Argument(0).float64()
	return toValue_float64(math.Abs(number))
}

func builtinMath_acos(call FunctionCall) Value {
	number := call.Argument(0).float64()
	return toValue_float64(math.Acos(number))
}

func builtinMath_asin(call FunctionCall) Value {
	number := call.Argument(0).float64()
	return toValue_float64(math.Asin(number))
}

func builtinMath_atan(call FunctionCall) Value {
	number := call.Argument(0).float64()
	return toValue_float64(math.Atan(number))
}

func builtinMath_atan2(call FunctionCall) Value {
	y := call.Argument(0).float64()
	if math.IsNaN(y) {
		return NaNValue()
	}
	x := call.Argument(1).float64()
	if math.IsNaN(x) {
		return NaNValue()
	}
	return toValue_float64(math.Atan2(y, x))
}

func builtinMath_cos(call FunctionCall) Value {
	number := call.Argument(0).float64()
	return toValue_float64(math.Cos(number))
}

func builtinMath_ceil(call FunctionCall) Value {
	number := call.Argument(0).float64()
	return toValue_float64(math.Ceil(number))
}

func builtinMath_exp(call FunctionCall) Value {
	number := call.Argument(0).float64()
	return toValue_float64(math.Exp(number))
}

func builtinMath_floor(call FunctionCall) Value {
	number := call.Argument(0).float64()
	return toValue_float64(math.Floor(number))
}

func builtinMath_log(call FunctionCall) Value {
	number := call.Argument(0).float64()
	return toValue_float64(math.Log(number))
}

func builtinMath_max(call FunctionCall) Value {
	switch len(call.ArgumentList) {
	case 0:
		return negativeInfinityValue()
	case 1:
		return toValue_float64(call.ArgumentList[0].float64())
	}
	result := call.ArgumentList[0].float64()
	if math.IsNaN(result) {
		return NaNValue()
	}
	for _, value := range call.ArgumentList[1:] {
		value := value.float64()
		if math.IsNaN(value) {
			return NaNValue()
		}
		result = math.Max(result, value)
	}
	return toValue_float64(result)
}

func builtinMath_min(call FunctionCall) Value {
	switch len(call.ArgumentList) {
	case 0:
		return positiveInfinityValue()
	case 1:
		return toValue_float64(call.ArgumentList[0].float64())
	}
	result := call.ArgumentList[0].float64()
	if math.IsNaN(result) {
		return NaNValue()
	}
	for _, value := range call.ArgumentList[1:] {
		value := value.float64()
		if math.IsNaN(value) {
			return NaNValue()
		}
		result = math.Min(result, value)
	}
	return toValue_float64(result)
}

func builtinMath_pow(call FunctionCall) Value {
	// TODO Make sure this works according to the specification (15.8.2.13)
	x := call.Argument(0).float64()
	y := call.Argument(1).float64()
	if math.Abs(x) == 1 && math.IsInf(y, 0) {
		return NaNValue()
	}
	return toValue_float64(math.Pow(x, y))
}

func builtinMath_random(call FunctionCall) Value {
	var v float64
	if call.runtime.random != nil {
		v = call.runtime.random()
	} else {
		v = rand.Float64()
	}
	return toValue_float64(v)
}

func builtinMath_round(call FunctionCall) Value {
	number := call.Argument(0).float64()
	value := math.Floor(number + 0.5)
	if value == 0 {
		value = math.Copysign(0, number)
	}
	return toValue_float64(value)
}

func builtinMath_sin(call FunctionCall) Value {
	number := call.Argument(0).float64()
	return toValue_float64(math.Sin(number))
}

func builtinMath_sqrt(call FunctionCall) Value {
	number := call.Argument(0).float64()
	return toValue_float64(math.Sqrt(number))
}

func builtinMath_tan(call FunctionCall) Value {
	number := call.Argument(0).float64()
	return toValue_float64(math.Tan(number))
}