promql/functions.go
func funcFloor(vals []Value, args Expressions, enh *EvalNodeHelper) Vector {
	return simpleFunc(vals, enh, math.Floor)
}
func funcFloor(vals []Value, args Expressions, enh *EvalNodeHelper) Vector {
	return simpleFunc(vals, enh, math.Floor)
}
// === floor(Vector ValueTypeVector) Vector ===