v := strconv.FormatFloat(t.f, 'g', -1, 64)
		if v != t.out {
			println("Bad float64 const:", t.in, "want", t.out, "got", v)
			x, err := strconv.ParseFloat(t.out, 64)
			if err != nil {
				println("bug120: strconv.Atof64", t.out)
				panic("fail")
			}
			println("\twant exact:", strconv.FormatFloat(x, 'g', 1000, 64))
			println("\tgot exact: ", strconv.FormatFloat(t.f, 'g', 1000, 64))
			ok = false
		}
	}
	if !ok {

			continue
		}
		var s string
		var v float64
		switch a[0] {
		case "float64":
			var ok bool
			v, ok = myatof64(a[2])
			if !ok {
				t.Error("testdata/testfp.txt:", lineno, ": cannot atof64 ", a[2])
				continue
			}
			s = fmt.Sprintf(a[1], v)
		case "float32":
			v1, ok := myatof32(a[2])
			if !ok {
				t.Error("testdata/testfp.txt:", lineno, ": cannot atof32 ", a[2])
				continue
			}

		return 0, n, syntaxError(fnParseFloat, s)
	}
	b, ovf := d.floatBits(&float32info)
	f = math.Float32frombits(uint32(b))
	if ovf {
		err = rangeError(fnParseFloat, s)
	}
	return f, n, err
}

func atof64(s string) (f float64, n int, err error) {
	if val, n, ok := special(s); ok {
		return val, n, nil
	}

	mantissa, exp, neg, trunc, hex, n, ok := readFloat(s)
	if !ok {
		return 0, n, syntaxError(fnParseFloat, s)

	}

	return n, true
}

// atoi is like atoi64 but for integers
// that fit into an int.
func atoi(s string) (int, bool) {
	if n, ok := atoi64(s); n == int64(int(n)) {
		return int(n), ok
	}
	return 0, false
}

// atoi32 is like atoi but for integers
// that fit into an int32.
func atoi32(s string) (int32, bool) {
	if n, ok := atoi64(s); n == int64(int32(n)) {
		return int32(n), ok
	}

	{ tf32, tf32, 10 }, { tf32, tf64, 10 },

	{ tf64, ti8,  10 }, { tf64, tu8,  10 }, { tf64, ti16, 10 }, { tf64, tu16, 10 },
	{ tf64, ti32, 10 }, { tf64, tu32, 10 }, { tf64, ti64, 10 }, { tf64, tu64, 10 },
	{ tf64, tf32, 10 }, { tf64, tf64, 10 },

	/* value good in all signed types (-4) */
	{ ti8,  ti8,  -4 }, { ti8,  ti16, -4 },
	{ ti8,  ti32, -4 }, { ti8,  ti64, -4 },
	{ ti8,  tf32, -4 }, { ti8,  tf64, -4 },

(Lsh64x(32|16|8) [c] x y) => (Lsh64x64 [c] x (ZeroExt(32|16|8)to64 y))

(Lsh32x64 ...) => (Lsh64x64 ...)
(Lsh32x(32|16|8) [c] x y) => (Lsh64x64 [c] x (ZeroExt(32|16|8)to64 y))

(Lsh16x64 ...) => (Lsh64x64 ...)
(Lsh16x(32|16|8) [c] x y) => (Lsh64x64 [c] x (ZeroExt(32|16|8)to64 y))

(Lsh8x64 ...) => (Lsh64x64 ...)
(Lsh8x(32|16|8) [c] x y) => (Lsh64x64 [c] x (ZeroExt(32|16|8)to64 y))

type TI8 int8
type TI16 int16
type TI32 int32
type TI64 int64
type TU uint
type TU8 uint8
type TU16 uint16
type TU32 uint32
type TU64 uint64
type TUI uintptr
type TF float64
type TF32 float32
type TF64 float64
type TB bool
type TS string

func (v TI) String() string   { return Sprintf("I: %d", int(v)) }
func (v TI8) String() string  { return Sprintf("I8: %d", int8(v)) }

			return err
		}
		asize := b.uint8()
		sig := b.uint64()

		var toff uint32
		if !dwarf64 {
			toff = b.uint32()
		} else {
			to64 := b.uint64()
			if to64 != uint64(uint32(to64)) {
				b.error("type unit type offset overflow")
				return b.err
			}
			toff = uint32(to64)
		}

		boff := b.off
		d.typeSigs[sig] = &typeUnit{
			unit: unit{
				base:   base,
				off:    boff,

		for _, g := range all {
			h := hw(f, g)
			s := sw(f, g)
			if !same(h, s) {
				err(t, "%g %s %g = sw %g, hw %g\n", f, op, g, s, h)
			}
			testu(t, "to32", trunc32, to32sw, h)
			testu(t, "to64", trunc32, to64sw, h)
			testu(t, "toint64", hwint64, toint64sw, h)
			testu(t, "fromint64", hwint64, fromint64sw, h)
			testcmp(t, f, h)
			testcmp(t, h, f)
			testcmp(t, g, h)
			testcmp(t, h, g)
		}
	}