func auxFrom64F(f float64) int64 {
	if f != f {
		panic("can't encode a NaN in AuxInt field")
	}
	return int64(math.Float64bits(f))
}

// auxFrom32F encodes a float32 value so it can be stored in an AuxInt.
func auxFrom32F(f float32) int64 {
	if f != f {
		panic("can't encode a NaN in AuxInt field")
	}
	return int64(math.Float64bits(extend32Fto64F(f)))
}