aboutsummaryrefslogtreecommitdiff
path: root/vendor/github.com/go-task/slim-sprig/numeric.go
blob: 98cbb37a193325f096c70ab0cef17b5098a7603b (plain)
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
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
package sprig

import (
	"fmt"
	"math"
	"reflect"
	"strconv"
	"strings"
)

// toFloat64 converts 64-bit floats
func toFloat64(v interface{}) float64 {
	if str, ok := v.(string); ok {
		iv, err := strconv.ParseFloat(str, 64)
		if err != nil {
			return 0
		}
		return iv
	}

	val := reflect.Indirect(reflect.ValueOf(v))
	switch val.Kind() {
	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
		return float64(val.Int())
	case reflect.Uint8, reflect.Uint16, reflect.Uint32:
		return float64(val.Uint())
	case reflect.Uint, reflect.Uint64:
		return float64(val.Uint())
	case reflect.Float32, reflect.Float64:
		return val.Float()
	case reflect.Bool:
		if val.Bool() {
			return 1
		}
		return 0
	default:
		return 0
	}
}

func toInt(v interface{}) int {
	//It's not optimal. Bud I don't want duplicate toInt64 code.
	return int(toInt64(v))
}

// toInt64 converts integer types to 64-bit integers
func toInt64(v interface{}) int64 {
	if str, ok := v.(string); ok {
		iv, err := strconv.ParseInt(str, 10, 64)
		if err != nil {
			return 0
		}
		return iv
	}

	val := reflect.Indirect(reflect.ValueOf(v))
	switch val.Kind() {
	case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
		return val.Int()
	case reflect.Uint8, reflect.Uint16, reflect.Uint32:
		return int64(val.Uint())
	case reflect.Uint, reflect.Uint64:
		tv := val.Uint()
		if tv <= math.MaxInt64 {
			return int64(tv)
		}
		// TODO: What is the sensible thing to do here?
		return math.MaxInt64
	case reflect.Float32, reflect.Float64:
		return int64(val.Float())
	case reflect.Bool:
		if val.Bool() {
			return 1
		}
		return 0
	default:
		return 0
	}
}

func max(a interface{}, i ...interface{}) int64 {
	aa := toInt64(a)
	for _, b := range i {
		bb := toInt64(b)
		if bb > aa {
			aa = bb
		}
	}
	return aa
}

func maxf(a interface{}, i ...interface{}) float64 {
	aa := toFloat64(a)
	for _, b := range i {
		bb := toFloat64(b)
		aa = math.Max(aa, bb)
	}
	return aa
}

func min(a interface{}, i ...interface{}) int64 {
	aa := toInt64(a)
	for _, b := range i {
		bb := toInt64(b)
		if bb < aa {
			aa = bb
		}
	}
	return aa
}

func minf(a interface{}, i ...interface{}) float64 {
	aa := toFloat64(a)
	for _, b := range i {
		bb := toFloat64(b)
		aa = math.Min(aa, bb)
	}
	return aa
}

func until(count int) []int {
	step := 1
	if count < 0 {
		step = -1
	}
	return untilStep(0, count, step)
}

func untilStep(start, stop, step int) []int {
	v := []int{}

	if stop < start {
		if step >= 0 {
			return v
		}
		for i := start; i > stop; i += step {
			v = append(v, i)
		}
		return v
	}

	if step <= 0 {
		return v
	}
	for i := start; i < stop; i += step {
		v = append(v, i)
	}
	return v
}

func floor(a interface{}) float64 {
	aa := toFloat64(a)
	return math.Floor(aa)
}

func ceil(a interface{}) float64 {
	aa := toFloat64(a)
	return math.Ceil(aa)
}

func round(a interface{}, p int, rOpt ...float64) float64 {
	roundOn := .5
	if len(rOpt) > 0 {
		roundOn = rOpt[0]
	}
	val := toFloat64(a)
	places := toFloat64(p)

	var round float64
	pow := math.Pow(10, places)
	digit := pow * val
	_, div := math.Modf(digit)
	if div >= roundOn {
		round = math.Ceil(digit)
	} else {
		round = math.Floor(digit)
	}
	return round / pow
}

// converts unix octal to decimal
func toDecimal(v interface{}) int64 {
	result, err := strconv.ParseInt(fmt.Sprint(v), 8, 64)
	if err != nil {
		return 0
	}
	return result
}

func seq(params ...int) string {
	increment := 1
	switch len(params) {
	case 0:
		return ""
	case 1:
		start := 1
		end := params[0]
		if end < start {
			increment = -1
		}
		return intArrayToString(untilStep(start, end+increment, increment), " ")
	case 3:
		start := params[0]
		end := params[2]
		step := params[1]
		if end < start {
			increment = -1
			if step > 0 {
				return ""
			}
		}
		return intArrayToString(untilStep(start, end+increment, step), " ")
	case 2:
		start := params[0]
		end := params[1]
		step := 1
		if end < start {
			step = -1
		}
		return intArrayToString(untilStep(start, end+step, step), " ")
	default:
		return ""
	}
}

func intArrayToString(slice []int, delimeter string) string {
	return strings.Trim(strings.Join(strings.Fields(fmt.Sprint(slice)), delimeter), "[]")
}