Function evalAvg

functional/functional.go:1439–1458

(it iter.Seq[ast.Constant])

}

func evalAvg(it iter.Seq[ast.Constant]) (ast.Constant, error) {
	var sum float64
	var n int
	for c := range it {
		n++
		num, err := c.Float64Value()
		if err != nil {
			fnum, err := c.NumberValue()
			if err != nil {
				return ast.Constant{}, err
			}
			num = float64(fnum)
		}
		sum += num
	}
	if n == 0 {
		return ast.Float64(math.NaN()), nil
	}
	return ast.Float64(sum / float64(n)), nil
}