DENBCDQCC:      "denbcdq.",
	DIEX:           "diex",
	DIEXCC:         "diex.",
	DIEXQCC:        "diexq.",
	DIEXQ:          "diexq",
	DMUL:           "dmul",
	DMULCC:         "dmul.",
	DMULQ:          "dmulq",
	DMULQCC:        "dmulq.",
	DQUA:           "dqua",
	DQUACC:         "dqua.",
	DQUAI:          "dquai",
	DQUAICC:        "dquai.",
	DQUAIQ:         "dquaiq",

//	then UV = u*v + x*(u*VV+v*UU) + x*x*UU*VV

func Mul(U, V PS) PS {
	Z := mkPS()
	go func(U, V, Z PS) {
		<-Z.req
		uv := get2(U, V)
		if end(uv[0].(*rat)) != 0 || end(uv[1].(*rat)) != 0 {
			Z.dat <- finis
		} else {
			Z.dat <- mul(uv[0].(*rat), uv[1].(*rat))
			UU := Split(U)
			VV := Split(V)
			W := Add(Cmul(uv[0].(*rat), VV[0]), Cmul(uv[1].(*rat), UU[0]))
			<-Z.req
			Z.dat <- get(W)

	// arm/7:"ADDD",-"MULD"
	// arm64:"FADDD",-"FMULD"
	// ppc64x:"FADD",-"FMUL"
	// riscv64:"FADDD",-"FMULD"
	return f * 2.0
}

func DivPow2(f1, f2, f3 float64) (float64, float64, float64) {
	// 386/sse2:"MULSD",-"DIVSD"
	// amd64:"MULSD",-"DIVSD"
	// arm/7:"MULD",-"DIVD"
	// arm64:"FMULD",-"FDIVD"
	// ppc64x:"FMUL",-"FDIV"
	// riscv64:"FMULD",-"FDIVD"
	x := f1 / 16.0

	// 386/sse2:"MULSD",-"DIVSD"

		return true
	}
	return false
}

// IsMIPSMUL reports whether the op (as defined by an mips.A* constant) is
// one of the MUL/DIV/REM/MADD/MSUB instructions that require special handling.
func IsMIPSMUL(op obj.As) bool {
	switch op {
	case mips.AMUL, mips.AMULU, mips.AMULV, mips.AMULVU,
		mips.ADIV, mips.ADIVU, mips.ADIVV, mips.ADIVVU,
		mips.AREM, mips.AREMU, mips.AREMV, mips.AREMVU,
		mips.AMADD, mips.AMSUB:

//	then UV = u*v + x*(u*VV+v*UU) + x*x*UU*VV

func Mul(U, V PS) PS {
	Z := mkPS()
	go func() {
		<-Z.req
		uv := get2(U, V)
		if end(uv[0]) != 0 || end(uv[1]) != 0 {
			Z.dat <- finis
		} else {
			Z.dat <- mul(uv[0], uv[1])
			UU := Split(U)
			VV := Split(V)
			W := Add(Cmul(uv[0], VV[0]), Cmul(uv[1], UU[0]))
			<-Z.req
			Z.dat <- get(W)
			copy(Add(W, Mul(UU[1], VV[1])), Z)
		}
	}()
	return Z

	LDGR	R2, F0
	FMADD	F0, F4, F0
	MOVD	$·expx4ff<>+0(SB), R3
	FMOVD	0(R3), F2
	FMUL	F2, F0
	FMOVD	F0, ret+8(FP)
	RET
L13:
	FMOVD	$0, F0
	FMOVD	F0, ret+8(FP)
	RET
L21:
	ADDW	$0x1000, R1
	RISBGN	$0, $15, $48, R1, R2
	LDGR	R2, F0
	FMADD	F0, F4, F0
	MOVD	$·expx2ff<>+0(SB), R3
	FMOVD	0(R3), F2
	FMUL	F2, F0
	FMOVD	F0, ret+8(FP)
	RET
LEXITTAGexp:
	FMOVD	F0, ret+8(FP)

	BEQ     L9
	WFMSDB  V0, V1, V6, V0
	MOVD    $sinhx4ff<>+0(SB), R3
	FNEG    F0, F0
	FMOVD   0(R3), F2
	FMUL    F2, F0
	ANDW    $0xFFFF, R2
	WORD    $0xA53FEFB6     //llill %r3,61366
	SUBW    R2, R3, R2
	RISBGN	$0, $15, $48, R2, R1
	LDGR    R1, F2
	FMUL    F2, F0
	FMOVD   F0, ret+8(FP)
	RET

L20:
	MOVD    $sinhxadd<>+0(SB), R2
	FMOVD   0(R2), F2
	MOVD    sinhrlog2<>+0(SB), R2

	// FMUL <Sd>, <Sn>, <Sm>
	{0xffe0fc00, 0x1e200800, FMUL, instArgs{arg_Sd, arg_Sn, arg_Sm}, nil},
	// FMUL <Dd>, <Dn>, <Dm>
	{0xffe0fc00, 0x1e600800, FMUL, instArgs{arg_Dd, arg_Dn, arg_Dm}, nil},
	// FMUL <Vd>.<t>, <Vn>.<t>, <Vm>.<t>

	"FMULSF",
	"FMULSD",
	"FNMULSF",
	"FNMULSD",
	"DIVF",
	"DIVD",
	"SQRTF",
	"SQRTD",
	"ABSF",
	"ABSD",
	"NEGF",
	"NEGD",
	"SRL",
	"SRA",
	"SLL",
	"MULU",
	"DIVU",
	"MUL",
	"MMUL",
	"DIV",
	"MOD",
	"MODU",
	"DIVHW",
	"DIVUHW",
	"MOVB",
	"MOVBS",
	"MOVBU",
	"MOVH",
	"MOVHS",
	"MOVHU",
	"MOVW",
	"MOVM",
	"SWPBU",
	"SWPW",
	"RFE",
	"SWI",

Eugene Burmako <******@****.***> 1671166704 -0800