if math.IsInf(x, 0) {
		return false
	}
	_, e := math.Frexp(x)
	return -maxExp < e && e < maxExp
}

// smallFloat reports whether x would lead to "reasonably"-sized fraction
// if converted to a *big.Rat.
func smallFloat(x *big.Float) bool {
	if x.IsInf() {
		return false
	}
	e := x.MantExp(nil)
	return -maxExp < e && e < maxExp
}

			mantissa >>= 1
			exp++
		}
	}

	if mantissa>>flt.mantbits == 0 { // Denormal or zero.
		exp = flt.bias
	}
	var err error
	if exp > maxExp { // infinity and range error
		mantissa = 1 << flt.mantbits
		exp = maxExp + 1
		err = rangeError(fnParseFloat, s)
	}

	bits := mantissa & (1<<flt.mantbits - 1)
	bits |= uint64((exp-flt.bias)&(1<<flt.expbits-1)) << flt.mantbits
	if neg {

const debugFloat = false // enable for debugging

// A nonzero finite Float represents a multi-precision floating point number
//
//	sign × mantissa × 2**exponent
//
// with 0.5 <= mantissa < 1.0, and MinExp <= exponent <= MaxExp.
// A Float may also be zero (+0, -0) or infinite (+Inf, -Inf).
// All Floats are ordered, and the ordering of two Floats x and y
// is defined by x.Cmp(y).
//

pkg math/big, const AwayFromZero RoundingMode
pkg math/big, const Below = -1
pkg math/big, const Below Accuracy
pkg math/big, const Exact = 0
pkg math/big, const Exact Accuracy
pkg math/big, const MaxExp = 2147483647
pkg math/big, const MaxExp ideal-int
pkg math/big, const MaxPrec = 4294967295
pkg math/big, const MaxPrec ideal-int
pkg math/big, const MinExp = -2147483648
pkg math/big, const MinExp ideal-int