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Use generic function to compute average

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This commit is contained in:
Holger Obermaier
2023-08-17 13:50:46 +02:00
parent ceff67085b
commit a25f4f8b8d
1 changed files with 18 additions and 30 deletions
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48
internal/metricAggregator/metricAggregatorFunctions.go
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@@ -14,7 +14,7 @@ import (
* Arithmetic functions on value arrays
*/
func sumAnyType[T float64 | float32 | int | int32 | int64](values []T) interface{} {
func sumAnyType[T float64 | float32 | int | int32 | int64](values []T) T {
var sum T
for _, value := range values {
sum += value
@@ -44,7 +44,7 @@ func sumfunc(args interface{}) (interface{}, error) {
return 0.0, err
}
func minAnyType[T float64 | float32 | int | int32 | int64](values []T) (interface{}, error) {
func minAnyType[T float64 | float32 | int | int32 | int64](values []T) (T, error) {
if len(values) == 0 {
return 0.0, errors.New("min function requires at least one argument")
}
@@ -75,45 +75,33 @@ func minfunc(args interface{}) (interface{}, error) {
}
}
func avgAnyType[T float64 | float32 | int | int32 | int64](values []T) (float64, error) {
if len(values) == 0 {
return 0.0, errors.New("average function requires at least one argument")
}
sum := sumAnyType[T](values)
return float64(sum) / float64(len(values)), nil
}
// Get the average or mean value
func avgfunc(args interface{}) (interface{}, error) {
switch values := args.(type) {
case []float64:
var s float64 = 0
for _, x := range values {
s += x
}
return s / float64(len(values)), nil
return avgAnyType(values)
case []float32:
var s float32 = 0
for _, x := range values {
s += x
}
return s / float32(len(values)), nil
return avgAnyType(values)
case []int:
var s int = 0
for _, x := range values {
s += x
}
return s / len(values), nil
return avgAnyType(values)
case []int64:
var s int64 = 0
for _, x := range values {
s += x
}
return s / int64(len(values)), nil
return avgAnyType(values)
case []int32:
var s int32 = 0
for _, x := range values {
s += x
}
return s / int32(len(values)), nil
return avgAnyType(values)
default:
return 0.0, errors.New("function 'average' only on list of values (float64, float32, int, int32, int64)")
}
return 0.0, nil
}
func maxAnyType[T float64 | float32 | int | int32 | int64](values []T) (interface{}, error) {
func maxAnyType[T float64 | float32 | int | int32 | int64](values []T) (T, error) {
if len(values) == 0 {
return 0.0, errors.New("max function requires at least one argument")
}