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// Copyright (C) MongoDB, Inc. 2014-present.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
package bsonutil
import (
"fmt"
"reflect"
)
var floatType = reflect.TypeOf(float64(0))
func getFloat(unk interface{}) (float64, error) {
v := reflect.ValueOf(unk)
v = reflect.Indirect(v)
if !v.Type().ConvertibleTo(floatType) {
return 0, fmt.Errorf("cannot convert %v to float64", v.Type())
}
fv := v.Convert(floatType)
return fv.Float(), nil
}
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