d := new(decimal)
	d.Assign(i)
	return d
}

func SetOptimize(b bool) bool {
	old := optimize
	optimize = b
	return old
}

func ParseFloatPrefix(s string, bitSize int) (float64, int, error) {
	return parseFloatPrefix(s, bitSize)
}

func MulByLog2Log10(x int) int {
	return mulByLog2Log10(x)
}

func MulByLog10Log2(x int) int {
	return mulByLog10Log2(x)

// license that can be found in the LICENSE file.

package strconv

import "internal/stringslite"

const fnParseComplex = "ParseComplex"

// convErr splits an error returned by parseFloatPrefix
// into a syntax or range error for ParseComplex.
func convErr(err error, s string) (syntax, range_ error) {
	if x, ok := err.(*NumError); ok {
		x.Func = fnParseComplex
		x.Num = stringslite.Clone(s)

		for _, suffix := range []string{" ", "q", "+", "-", "<", "=", ">", "(", ")", "i", "init"} {
			in := test.in + suffix
			_, n, err := ParseFloatPrefix(in, 64)
			if err != nil {
				t.Errorf("ParseFloatPrefix(%q, 64): err = %v; want no error", in, err)
			}
			if n != len(test.in) {
				t.Errorf("ParseFloatPrefix(%q, 64): n = %d; want %d", in, n, len(test.in))
			}
		}
	}
}

func testAtof(t *testing.T, opt bool) {

func ParseFloat(s string, bitSize int) (float64, error) {
	f, n, err := parseFloatPrefix(s, bitSize)
	if n != len(s) && (err == nil || err.(*NumError).Err != ErrSyntax) {
		return 0, syntaxError(fnParseFloat, s)
	}
	return f, err
}

func parseFloatPrefix(s string, bitSize int) (float64, int, error) {
	if bitSize == 32 {
		f, n, err := atof32(s)
		return float64(f), n, err