// rounded value overflows exponent range
		return Float64frombits(uint64(ps)<<63 | uvinf)
	}
	if pe < 0 {
		n := uint(-pe)
		m = m>>n | nonzero(m&(1<<n-1))
		pe = 0
	}
	m = ((m + 1<<9) >> 10) & ^zero((m&(1<<10-1))^1<<9)
	pe &= -int32(nonzero(m))
	return Float64frombits(uint64(ps)<<63 + uint64(pe)<<52 + m)

			iu = Float64bits(u)
			k = int((iu >> 52) - 1023)
			c = 0
		}
		iu &= 0x000fffffffffffff
		if iu < 0x0006a09e667f3bcd { // mantissa of Sqrt(2)
			u = Float64frombits(iu | 0x3ff0000000000000) // normalize u
		} else {
			k++
			u = Float64frombits(iu | 0x3fe0000000000000) // normalize u/2
			iu = (0x0010000000000000 - iu) >> 2
		}
		f = u - 1.0 // Sqrt(2)/2 < u < Sqrt(2)
	}
	hfsq := 0.5 * f * f

//
// If v.Kind() != KindFloat64, this method panics.
func (v Value) Float64() float64 {
	if v.kind != KindFloat64 {
		panic("called Float64 on non-float64 metric value")
	}
	return math.Float64frombits(v.scalar)
}

// Float64Histogram returns the internal *Float64Histogram value for the metric.
//
// If v.Kind() != KindFloat64Histogram, this method panics.
func (v Value) Float64Histogram() *Float64Histogram {

	// Like math.Copysign(c, -1), but with integer operations. Useful
	// for platforms that have a copysign opcode to see if it's detected.
	// s390x:"LNDFR\t",-"MOVD\t"     (no integer load/store)
	sink64[2] = math.Float64frombits(math.Float64bits(a) | 1<<63)

	// amd64:"ANDQ","ORQ"
	// s390x:"CPSDR\t",-"MOVD\t"     (no integer load/store)
	// ppc64x:"FCPSGN"
	// riscv64:"FSGNJD"
	sink64[3] = math.Copysign(-1, c)
}

		m[nanb] = "NaN"
		if len(m) != 5 {
			panic(fmt.Sprintln("float32 map should have 5 entries:", m))
		}
	}

	{
		var (
			pz   = float64(0)
			nz   = math.Float64frombits(1 << 63)
			nana = float64(math.NaN())
			nanb = math.Float64frombits(math.Float64bits(nana) ^ 2)
		)

		m := map[float64]string{
			pz:   "+0",
			nana: "NaN",
			nanb: "NaN",
		}
		if m[nz] != "+0" {

	case reflect.Float64:
		v.SetFloat(math.Float64frombits(d.uint64()))

	case reflect.Complex64:
		v.SetComplex(complex(
			float64(math.Float32frombits(d.uint32())),
			float64(math.Float32frombits(d.uint32())),
		))
	case reflect.Complex128:
		v.SetComplex(complex(
			math.Float64frombits(d.uint64()),
			math.Float64frombits(d.uint64()),
		))
	}
}

	// Clear implicit mantissa bit and shift into place.
	hi = (hi << (lz + 1)) | (lo >> (64 - (lz + 1)))
	hi >>= 64 - shift
	// Include the exponent and convert to a float.
	hi |= e << shift
	z = Float64frombits(hi)
	// Map zeros to origin.
	if j&1 == 1 {
		j++
		j &= 7
		z--
	}
	// Multiply the fractional part by pi/4.
	return j, z * PI4
}

// mPi4 is the binary digits of 4/pi as a uint64 array,

		}
		if i >= len(slice) {
			// This is a slice that we only partially allocated.
			growSlice(v, &slice, length)
		}
		real := float64FromBits(state.decodeUint())
		imag := float64FromBits(state.decodeUint())
		slice[i] = complex(real, imag)
	}
	return true
}

func decFloat32Array(state *decoderState, v reflect.Value, length int, ovfl error) bool {

		} else {
			dst.gp_regs[i+3] = uint64(src.Ints[i])
		}
	}
	// Fprs F1..F13 are used to pass float arguments in registers on PPC64
	for i := 0; i < 12; i++ {
		dst.fp_regs[i+1] = math.Float64frombits(src.Floats[i])
	}

}

func loadRegArgs(dst *abi.RegArgs, src *sigcontext) {
	// Gprs R3..R10, R14..R17 are used to pass int arguments in registers on PPC64
	for i := range [12]int{} {
		if i > 7 {

		r >>= 1
	}
	// final rounding
	if ix != 0 { // remainder, result not exact
		q += q & 1 // round according to extra bit
	}
	ix = q>>1 + uint64(exp-1+bias)<<shift // significand + biased exponent
	return Float64frombits(ix)