"FMVWX",
	"FEQS",
	"FLTS",
	"FLES",
	"FCLASSS",
	"FLD",
	"FSD",
	"FADDD",
	"FSUBD",
	"FMULD",
	"FDIVD",
	"FMIND",
	"FMAXD",
	"FSQRTD",
	"FMADDD",
	"FMSUBD",
	"FNMADDD",
	"FNMSUBD",
	"FCVTWD",
	"FCVTLD",
	"FCVTDW",
	"FCVTDL",
	"FCVTWUD",
	"FCVTLUD",
	"FCVTDWU",
	"FCVTDLU",
	"FCVTSD",
	"FCVTDS",
	"FSGNJD",
	"FSGNJND",
	"FSGNJXD",

func fms(x, y, z float64) float64 {
	// riscv64:"FMSUBD"
	return math.FMA(x, y, -z)
}

func fnms(x, y, z float64) float64 {
	// riscv64:"FNMSUBD",-"FNMADDD"
	return math.FMA(-x, y, z)
}

func fnma(x, y, z float64) float64 {
	// riscv64:"FNMADDD",-"FNMSUBD"
	return math.FMA(x, -y, -z)
}

func fromFloat64(f64 float64) uint64 {
	// amd64:"MOVQ\tX.*, [^X].*"
	// arm64:"FMOVD\tF.*, R.*"

	"FMAXNMS",
	"FMAXS",
	"FMIND",
	"FMINNMD",
	"FMINNMS",
	"FMINS",
	"FMOVD",
	"FMOVQ",
	"FMOVS",
	"FMSUBD",
	"FMSUBS",
	"FMULD",
	"FMULS",
	"FNEGD",
	"FNEGS",
	"FNMADDD",
	"FNMADDS",
	"FNMSUBD",
	"FNMSUBS",
	"FNMULD",
	"FNMULS",
	"FRINTAD",
	"FRINTAS",
	"FRINTID",
	"FRINTIS",
	"FRINTMD",
	"FRINTMS",
	"FRINTND",
	"FRINTNS",
	"FRINTPD",

Examples:

	MADD R2, R30, R22, R6       <=>    madd x6, x22, x2, x30
	SMSUBL R10, R3, R17, R27    <=>    smsubl x27, w17, w10, x3

(3) FMADDD, FMADDS, FMSUBD, FMSUBS, FNMADDD, FNMADDS, FNMSUBD, FNMSUBS <Fm>, <Fa>, <Fn>, <Fd>

Examples:

	FMADDD F30, F20, F3, F29    <=>    fmadd d29, d3, d30, d20
	FNMSUBS F7, F25, F7, F22    <=>    fnmsub s22, s7, s7, s25