// Functions of the form
//
//	func FuzzXxx(*testing.F)
//
// are considered fuzz tests.
//
// For example:
//
//	func FuzzHex(f *testing.F) {
//	  for _, seed := range [][]byte{{}, {0}, {9}, {0xa}, {0xf}, {1, 2, 3, 4}} {
//	    f.Add(seed)
//	  }
//	  f.Fuzz(func(t *testing.T, in []byte) {
//	    enc := hex.EncodeToString(in)
//	    out, err := hex.DecodeString(enc)
//	    if err != nil {

}

// encodeBImmediate encodes an immediate for a B-type RISC-V instruction.
func encodeBImmediate(imm uint32) uint32 {
	return (imm>>12)<<31 | ((imm>>5)&0x3f)<<25 | ((imm>>1)&0xf)<<8 | ((imm>>11)&0x1)<<7
}

// encodeB encodes a B-type RISC-V instruction.
func encodeB(ins *instruction) uint32 {
	imm := immI(ins.as, ins.imm, 13)
	rs2 := regI(ins.rs1)
	rs1 := regI(ins.rs2)

// as can the definition of type info vs payload above.
//
#if __LP64__
#define CF_IS_TAGGED_OBJ(PTR)	((uintptr_t)(PTR) & 0x1)
#define CF_TAGGED_OBJ_TYPE(PTR)	((uintptr_t)(PTR) & 0xF)
#else
#define CF_IS_TAGGED_OBJ(PTR)	0
#define CF_TAGGED_OBJ_TYPE(PTR)	0
#endif

enum {
    kCFTaggedObjectID_Invalid = 0,
    kCFTaggedObjectID_Atom = (0 << 1) + 1,