mode, x, x, got, want)
		}
	}
}

// TestFloatAdd32 tests that Float.Add/Sub of numbers with
// 24bit mantissa behaves like float32 addition/subtraction
// (excluding denormal numbers).
func TestFloatAdd32(t *testing.T) {
	// chose base such that we cross the mantissa precision limit
	const base = 1<<26 - 0x10 // 11...110000 (26 bits)
	for d := 0; d <= 0x10; d++ {
		for i := range [2]int{} {

	b := math.Float64bits(f)
	m := b & ((1 << 52) - 1) // mantissa (a.k.a. significand)
	//          | sign                  | exponent   | mantissa       |
	r := uint32(((b >> 32) & (1 << 31)) | 0x7f800000 | (m >> (52 - 23)))
	return math.Float32frombits(r)
}

// extend32Fto64F converts a float32 value to a float64 value preserving the bit
// pattern of the mantissa.
func extend32Fto64F(f float32) float64 {

		check.error(e, BadDotDotDotSyntax, "invalid use of '...'")
		goto Error

	case *ast.BasicLit:
		switch e.Kind {
		case token.INT, token.FLOAT, token.IMAG:
			check.langCompat(e)
			// The max. mantissa precision for untyped numeric values
			// is 512 bits, or 4048 bits for each of the two integer
			// parts of a fraction for floating-point numbers that are
			// represented accurately in the go/constant package.

	case *syntax.BasicLit:
		if e.Bad {
			goto Error // error reported during parsing
		}
		switch e.Kind {
		case syntax.IntLit, syntax.FloatLit, syntax.ImagLit:
			check.langCompat(e)
			// The max. mantissa precision for untyped numeric values
			// is 512 bits, or 4048 bits for each of the two integer
			// parts of a fraction for floating-point numbers that are
			// represented accurately in the go/constant package.

	}
	n := 0

	// sign bit (a)
	if h&0x80000000 != 0 {
		n |= 1 << 7
	}

	// exp sign bit (b)
	if h1 == 0x3fc00000 {
		n |= 1 << 6
	}

	// rest of exp and mantissa (cd-efgh)
	n |= int((h >> 16) & 0x3f)

	//print("match %.8lux %.8lux %d\n", l, h, n);
	return n
}

func nocache(p *obj.Prog) {
	p.Optab = 0
	p.From.Class = 0
	if p.GetFrom3() != nil {