pkg strconv, func CanBackquote(string) bool
pkg strconv, func FormatBool(bool) string
pkg strconv, func FormatFloat(float64, uint8, int, int) string
pkg strconv, func FormatInt(int64, int) string
pkg strconv, func FormatUint(uint64, int) string
pkg strconv, func IsPrint(int32) bool
pkg strconv, func Itoa(int) string
pkg strconv, func ParseBool(string) (bool, error)

		Len: c.intExpr(n),
		Elt: c.byte,
	}
}

// Expr for integer n.
func (c *typeConv) intExpr(n int64) ast.Expr {
	return &ast.BasicLit{
		Kind:  token.INT,
		Value: strconv.FormatInt(n, 10),
	}
}

// Add padding of given size to fld.
func (c *typeConv) pad(fld []*ast.Field, sizes []int64, size int64) ([]*ast.Field, []int64) {
	n := len(fld)
	fld = fld[0 : n+1]