user: 下面的汇编指令对应的C源代码是什么：

```asm
<IntegerPacker_16>:
  endbr64
  cmp    $0x10,%edx
  jg     L43
  mov    %edx,%r10d
  cmp    %ecx,%edx
  jl     L43
  test   %r9d,%r9d
  lea    0x1f(%r9),%eax
  mov    $0xffffffff,%edx
  push   %r15
  cmovns %r9d,%eax
  shl    %cl,%edx
  push   %r14
  not    %edx
  push   %r13
  sar    $0x5,%eax
  push   %r12
  cltq
  push   %rbp
  lea    (%rdi,%rax,4),%r11
  mov    %r9d,%eax
  push   %rbx
  sar    $0x1f,%eax
  shr    $0x1b,%eax
  add    %eax,%r9d
  and    $0x1f,%r9d
  sub    %r9d,%eax
  lea    0x20(%rax),%r9d
  test   %eax,%eax
  je     L138
  xor    %eax,%eax
  cmp    $0x1f,%r9d
  jg     L297
  mov    (%r11),%eax
  mov    %r9d,%ecx
  shr    %cl,%eax
L297:
  cmp    $0x1,%r8d
  jle    L386
  sub    $0x2,%r8d
  mov    %r8d,%r12d
  shr    %r12d
  lea    0x1(%r12),%ecx
  lea    (%rsi,%rcx,4),%rbp
  nopl   0x0(%rax,%rax,1)
L86:
  movzwl (%rsi),%ebx
  mov    %r9d,%edi
  mov    %r10d,%ecx
  shl    %cl,%rax
  sub    %r10d,%edi
  and    %edx,%ebx
  movzwl %bx,%ebx
  or     %rbx,%rax
  test   %edi,%edi
  jg     L385
  mov    %r10d,%ecx
  mov    %rax,%r14
  sub    %r9d,%ecx
  shr    %cl,%r14
  test   %edi,%edi
  cmovne %r14,%rax
  add    $0x20,%edi
  add    $0x4,%r11
  mov    %eax,-0x4(%r11)
  mov    %rbx,%rax
L385:
  movzwl 0x2(%rsi),%ebx
  mov    %edi,%r9d
  mov    %r10d,%ecx
  add    $0x4,%rsi
  shl    %cl,%rax
  sub    %r10d,%r9d
  and    %edx,%ebx
  movzwl %bx,%ebx
  or     %rbx,%rax
  test   %r9d,%r9d
  jg     L330
  mov    %r10d,%ecx
  sub    %edi,%ecx
  mov    %rax,%rdi
  shr    %cl,%rdi
  test   %r9d,%r9d
  cmovne %rdi,%rax
  add    $0x20,%r9d
  add    $0x4,%r11
  mov    %eax,-0x4(%r11)
  mov    %rbx,%rax
L330:
  cmp    %rbp,%rsi
  jne    L86
  neg    %r12d
  lea    (%r8,%r12,2),%r8d
L247:
  mov    %r9d,%esi
  cmp    $0x1,%r8d
  jne    L114
  mov    %r10d,%ecx
  and    0x0(%rbp),%dx
  sub    %r10d,%esi
  shl    %cl,%rax
  movzwl %dx,%edx
  or     %rdx,%rax
  test   %esi,%esi
  jg     L114
  mov    %r10d,%ecx
  mov    %rax,%rbx
  sub    %r9d,%ecx
  shr    %cl,%rbx
  test   %esi,%esi
  cmovne %rbx,%rax
  add    $0x20,%esi
  add    $0x4,%r11
  mov    %eax,-0x4(%r11)
  mov    %rdx,%rax
L114:
  cmp    $0x1f,%esi
  jg     L31
  mov    %esi,%ecx
  shl    %cl,%rax
  mov    %eax,(%r11)
L31:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   (%rax)
L138:
  cmp    $0x10,%r10d
  je     L309
  cmp    $0xc,%r10d
  jne    L123
  cmp    $0x7,%r8d
  jle    L177
  sub    $0x8,%r8d
  mov    %r11,%rbx
  mov    %r8d,%ebp
  shr    $0x3,%ebp
  lea    0x1(%rbp),%r12d
  mov    %r12,%rcx
  shl    $0x4,%rcx
  add    %rsi,%rcx
  nopl   0x0(%rax)
L127:
  movzwl (%rsi),%edi
  movzwl 0x2(%rsi),%r14d
  add    $0x10,%rsi
  add    $0xc,%rbx
  movzwl -0xc(%rsi),%eax
  movzwl -0xa(%rsi),%r13d
  and    %edx,%edi
  and    %edx,%r14d
  shl    $0x8,%r14d
  and    %edx,%eax
  shl    $0x14,%edi
  and    %edx,%r13d
  or     %r14d,%edi
  mov    %eax,%r14d
  shl    $0x10,%r13d
  shr    $0x4,%r14d
  shl    $0x1c,%eax
  or     %r14d,%edi
  or     %r13d,%eax
  movzwl -0x8(%rsi),%r13d
  mov    %edi,-0xc(%rbx)
  movzwl -0x6(%rsi),%edi
  and    %edx,%r13d
  and    %edx,%edi
  shl    $0x4,%r13d
  or     %r13d,%eax
  mov    %edi,%r13d
  shl    $0x18,%edi
  shr    $0x8,%r13d
  or     %r13d,%eax
  mov    %eax,-0x8(%rbx)
  movzwl -0x4(%rsi),%eax
  and    %edx,%eax
  shl    $0xc,%eax
  or     %eax,%edi
  movzwl -0x2(%rsi),%eax
  and    %edx,%eax
  or     %eax,%edi
  mov    %edi,-0x4(%rbx)
  cmp    %rcx,%rsi
  jne    L127
  lea    (%r12,%r12,2),%rax
  neg    %ebp
  lea    (%r11,%rax,4),%rbx
  lea    (%r8,%rbp,8),%r8d
  jmp    L61
L43:
  ret
  nopl   0x0(%rax)
L309:
  cmp    $0x3,%r8d
  jle    L177
  sub    $0x4,%r8d
  mov    %rsi,%rbp
  mov    %r8d,%r12d
  shr    $0x2,%r12d
  lea    0x1(%r12),%ecx
  shl    $0x3,%rcx
  lea    (%r11,%rcx,1),%rbx
  nopl   (%rax)
L94:
  movzwl 0x0(%rbp),%edi
  movzwl 0x4(%rbp),%eax
  add    $0x8,%rbp
  add    $0x8,%r11
  movzwl -0x6(%rbp),%r14d
  movzwl -0x2(%rbp),%r13d
  and    %edx,%edi
  and    %edx,%eax
  shl    $0x10,%edi
  and    %edx,%r14d
  and    %edx,%r13d
  shl    $0x10,%eax
  or     %r14d,%edi
  or     %r13d,%eax
  mov    %edi,-0x8(%r11)
  mov    %eax,-0x4(%r11)
  cmp    %rbx,%r11
  jne    L94
  neg    %r12d
  add    %rsi,%rcx
  lea    (%r8,%r12,4),%r8d
L61:
  mov    %rcx,%rsi
  cmp    $0x2,%r10d
  jne    L44
  cmp    $0xf,%r8d
  jle    L81
  sub    $0x10,%r8d
  mov    %rcx,%rax
  mov    %r8d,%r12d
  shr    $0x4,%r12d
  lea    0x1(%r12),%esi
  lea    (%rbx,%rsi,4),%r11
  nopl   (%rax)
L218:
  movzwl (%rax),%edi
  movzwl 0x2(%rax),%ebp
  and    %edx,%edi
  and    %edx,%ebp
  shl    $0x2,%edi
  or     %edi,%ebp
  movzwl 0x4(%rax),%edi
  shl    $0x2,%ebp
  and    %edx,%edi
  or     %ebp,%edi
  movzwl 0x6(%rax),%ebp
  shl    $0x2,%edi
  and    %edx,%ebp
  or     %edi,%ebp
  movzwl 0x8(%rax),%edi
  shl    $0x2,%ebp
  and    %edx,%edi
  or     %ebp,%edi
  movzwl 0xa(%rax),%ebp
  shl    $0x2,%edi
  and    %edx,%ebp
  or     %edi,%ebp
  movzwl 0xc(%rax),%edi
  shl    $0x2,%ebp
  and    %edx,%edi
  or     %ebp,%edi
  movzwl 0xe(%rax),%ebp
  shl    $0x2,%edi
  and    %edx,%ebp
  or     %edi,%ebp
  movzwl 0x10(%rax),%edi
  shl    $0x2,%ebp
  and    %edx,%edi
  or     %ebp,%edi
  movzwl 0x12(%rax),%ebp
  shl    $0x2,%edi
  and    %edx,%ebp
  or     %edi,%ebp
  movzwl 0x14(%rax),%edi
  shl    $0x2,%ebp
  and    %edx,%edi
  or     %ebp,%edi
  movzwl 0x16(%rax),%ebp
  shl    $0x2,%edi
  and    %edx,%ebp
  add    $0x20,%rax
  add    $0x4,%rbx
  or     %edi,%ebp
  movzwl -0x8(%rax),%edi
  shl    $0x2,%ebp
  and    %edx,%edi
  or     %ebp,%edi
  movzwl -0x6(%rax),%ebp
  shl    $0x2,%edi
  and    %edx,%ebp
  or     %edi,%ebp
  movzwl -0x4(%rax),%edi
  shl    $0x2,%ebp
  and    %edx,%edi
  or     %ebp,%edi
  movzwl -0x2(%rax),%ebp
  shl    $0x2,%edi
  and    %edx,%ebp
  or     %ebp,%edi
  mov    %edi,-0x4(%rbx)
  cmp    %r11,%rbx
  jne    L218
  shl    $0x5,%rsi
  shl    $0x4,%r12d
  add    %rcx,%rsi
  sub    %r12d,%r8d
L387:
  xor    %eax,%eax
  jmp    L297
  nopl   0x0(%rax,%rax,1)
L123:
  cmp    $0x8,%r10d
  jne    L259
  cmp    $0x7,%r8d
  jle    L256
  sub    $0x8,%r8d
  mov    %rsi,%rcx
  mov    %r8d,%ebp
  shr    $0x3,%ebp
  lea    0x1(%rbp),%edi
  lea    (%r11,%rdi,8),%rbx
  nopl   0x0(%rax,%rax,1)
L237:
  movzwl (%rcx),%eax
  movzwl 0x2(%rcx),%r12d
  add    $0x10,%rcx
  add    $0x8,%r11
  movzwl -0x6(%rcx),%r13d
  and    %edx,%eax
  and    %edx,%r12d
  shl    $0x10,%r12d
  shl    $0x18,%eax
  and    %edx,%r13d
  or     %r12d,%eax
  movzwl -0xa(%rcx),%r12d
  shl    $0x10,%r13d
  and    %edx,%r12d
  or     %r12d,%eax
  movzwl -0xc(%rcx),%r12d
  and    %edx,%r12d
  shl    $0x8,%r12d
  or     %r12d,%eax
  movzwl -0x4(%rcx),%r12d
  mov    %eax,-0x8(%r11)
  movzwl -0x8(%rcx),%eax
  and    %edx,%r12d
  and    %edx,%eax
  shl    $0x8,%r12d
  shl    $0x18,%eax
  or     %r13d,%eax
  or     %r12d,%eax
  movzwl -0x2(%rcx),%r12d
  and    %edx,%r12d
  or     %r12d,%eax
  mov    %eax,-0x4(%r11)
  cmp    %rbx,%r11
  jne    L237
  shl    $0x4,%rdi
  neg    %ebp
  add    %rdi,%rsi
  lea    (%r8,%rbp,8),%r8d
L81:
  mov    %rbx,%r11
  xor    %eax,%eax
  jmp    L297
L44:
  cmp    $0x1,%r10d
  jne    L81
  cmp    $0x1f,%r8d
  jle    L81
  sub    $0x20,%r8d
  lea    0x40(%rcx),%rbp
  mov    %r8d,%r12d
  shr    $0x5,%r12d
  lea    0x1(%r12),%esi
  lea    (%rbx,%rsi,4),%r11
  nopl   0x0(%rax,%rax,1)
L212:
  lea    -0x40(%rbp),%rdi
  xor    %eax,%eax
  xchg   %ax,%ax
L122:
  movzwl (%rdi),%r13d
  add    %eax,%eax
  add    $0x8,%rdi
  and    $0x1,%r13d
  or     %eax,%r13d
  movzwl -0x6(%rdi),%eax
  add    %r13d,%r13d
  and    $0x1,%eax
  or     %r13d,%eax
  movzwl -0x4(%rdi),%r13d
  add    %eax,%eax
  and    $0x1,%r13d
  or     %eax,%r13d
  movzwl -0x2(%rdi),%eax
  add    %r13d,%r13d
  and    $0x1,%eax
  or     %r13d,%eax
  cmp    %rbp,%rdi
  jne    L122
  add    $0x4,%rbx
  lea    0x40(%rdi),%rbp
  mov    %eax,-0x4(%rbx)
  cmp    %r11,%rbx
  jne    L212
  shl    $0x5,%r12d
  shl    $0x6,%rsi
  xor    %eax,%eax
  sub    %r12d,%r8d
  add    %rcx,%rsi
  jmp    L297
  nopl   0x0(%rax,%rax,1)
L386:
  mov    %rsi,%rbp
  jmp    L247
L177:
  mov    %rsi,%rcx
  mov    %r11,%rbx
  jmp    L61
L256:
  mov    %r11,%rbx
  jmp    L81
L259:
  mov    %rsi,%rcx
  mov    %r11,%rbx
  cmp    $0x6,%r10d
  jne    L405
  cmp    $0xf,%r8d
  jle    L81
  sub    $0x10,%r8d
  mov    %r8d,%ebp
  shr    $0x4,%ebp
  lea    0x1(%rbp),%r12d
  mov    %r12,%rax
  shl    $0x5,%rax
  add    %rax,%rsi
  nopl   (%rax)
L257:
  movzwl (%rcx),%eax
  movzwl 0x2(%rcx),%r15d
  movzwl 0xa(%rcx),%edi
  movzwl 0xc(%rcx),%r14d
  and    %edx,%eax
  and    %edx,%r15d
  movzwl 0xe(%rcx),%r13d
  shl    $0x14,%r15d
  shl    $0x1a,%eax
  and    %edx,%edi
  and    %edx,%r14d
  or     %r15d,%eax
  movzwl 0x4(%rcx),%r15d
  shl    $0x16,%r14d
  and    %edx,%r13d
  shl    $0x10,%r13d
  and    %edx,%r15d
  shl    $0xe,%r15d
  or     %r15d,%eax
  movzwl 0x6(%rcx),%r15d
  and    %edx,%r15d
  shl    $0x8,%r15d
  or     %r15d,%eax
  movzwl 0x8(%rcx),%r15d
  and    %edx,%r15d
  shl    $0x2,%r15d
  or     %r15d,%eax
  mov    %edi,%r15d
  shl    $0x1c,%edi
  or     %r14d,%edi
  shr    $0x4,%r15d
  movzwl 0x18(%rcx),%r14d
  or     %r13d,%edi
  movzwl 0x10(%rcx),%r13d
  or     %r15d,%eax
  movzwl 0x16(%rcx),%r15d
  mov    %eax,(%rbx)
  movzwl 0x14(%rcx),%eax
  and    %edx,%r13d
  shl    $0xa,%r13d
  and    %edx,%eax
  or     %r13d,%edi
  movzwl 0x12(%rcx),%r13d
  and    %edx,%r13d
  shl    $0x4,%r13d
  or     %r13d,%edi
  mov    %eax,%r13d
  shr    $0x2,%r13d
  or     %r13d,%edi
  movzwl 0x1a(%rcx),%r13d
  and    %edx,%r15d
  and    %edx,%r14d
  mov    %edi,0x4(%rbx)
  shl    $0x1e,%eax
  movzwl 0x1c(%rcx),%edi
  shl    $0x18,%r15d
  and    %edx,%r13d
  or     %r15d,%eax
  shl    $0x12,%r14d
  add    $0x20,%rcx
  and    %edx,%edi
  or     %r14d,%eax
  shl    $0xc,%r13d
  add    $0xc,%rbx
  shl    $0x6,%edi
  or     %r13d,%eax
  or     %edi,%eax
  movzwl -0x2(%rcx),%edi
  and    %edx,%edi
  or     %edi,%eax
  mov    %eax,-0x4(%rbx)
  cmp    %rsi,%rcx
  jne    L257
  lea    (%r12,%r12,2),%rax
  shl    $0x4,%ebp
  lea    (%r11,%rax,4),%rbx
  sub    %ebp,%r8d
  jmp    L81
L405:
  cmp    $0x4,%r10d
  jne    L61
  cmp    $0x7,%r8d
  jle    L387
  sub    $0x8,%r8d
  mov    %rsi,%rax
  mov    %r8d,%r12d
  shr    $0x3,%r12d
  lea    0x1(%r12),%ebp
  lea    (%r11,%rbp,4),%r11
  nopl   (%rax)
L48:
  movzwl (%rax),%ecx
  movzwl 0x2(%rax),%edi
  add    $0x10,%rax
  add    $0x4,%rbx
  and    %edx,%ecx
  and    %edx,%edi
  shl    $0x4,%ecx
  or     %ecx,%edi
  movzwl -0xc(%rax),%ecx
  shl    $0x4,%edi
  and    %edx,%ecx
  or     %edi,%ecx
  movzwl -0xa(%rax),%edi
  shl    $0x4,%ecx
  and    %edx,%edi
  or     %ecx,%edi
  movzwl -0x8(%rax),%ecx
  shl    $0x4,%edi
  and    %edx,%ecx
  or     %edi,%ecx
  movzwl -0x6(%rax),%edi
  shl    $0x4,%ecx
  and    %edx,%edi
  or     %ecx,%edi
  movzwl -0x4(%rax),%ecx
  shl    $0x4,%edi
  and    %edx,%ecx
  or     %edi,%ecx
  movzwl -0x2(%rax),%edi
  shl    $0x4,%ecx
  and    %edx,%edi
  or     %edi,%ecx
  mov    %ecx,-0x4(%rbx)
  cmp    %r11,%rbx
  jne    L48
  shl    $0x4,%rbp
  neg    %r12d
  xor    %eax,%eax
  add    %rbp,%rsi
  lea    (%r8,%r12,8),%r8d
  jmp    L297
```

assistant: ```c
void IntegerPacker_16(void *stream, void *src, int nbits, int nbitt, int n, int offset) {
  unsigned int *packed = (unsigned int *)stream;
  unsigned short *unpacked = (unsigned short *)src;
  unsigned long long temp;
  unsigned int mask, token, token1, token2, token3, token4, token5, token6, token7, token8;
  int bleft, i;
  if (nbits > 16 || nbitt > nbits)
    return;
  packed += offset / 32;
  bleft = 32 - (offset % 32);
  temp = 0;
  mask = ~(0xFFFFFFFF << nbitt);
  if (bleft == 32) {
    if (nbits == 16) {
      while (n > 3) {
        token1 = (*unpacked++) & mask;
        token2 = (*unpacked++) & mask;
        token3 = (*unpacked++) & mask;
        token4 = (*unpacked++) & mask;
        *packed++ = (token1 << 16) | token2;
        *packed++ = (token3 << 16) | token4;
        n -= 4;
      }
    }
    if (nbits == 12) {
      while (n > 7) {
        token1 = (*unpacked++) & mask;
        token2 = (*unpacked++) & mask;
        token3 = (*unpacked++) & mask;
        token4 = (*unpacked++) & mask;
        *packed++ = (token1 << 20) | (token2 << 8) | (token3 >> 4);
        token1 = (*unpacked++) & mask;
        token2 = (*unpacked++) & mask;
        *packed++ = (token3 << 28) | (token4 << 16) | (token1 << 4) | (token2 >> 8);
        token3 = (*unpacked++) & mask;
        token4 = (*unpacked++) & mask;
        *packed++ = (token2 << 24) | (token3 << 12) | token4;
        n -= 8;
      }
    }
    if (nbits == 8) {
      while (n > 7) {
        token1 = (*unpacked++) & mask;
        token2 = (*unpacked++) & mask;
        token3 = (*unpacked++) & mask;
        token4 = (*unpacked++) & mask;
        *packed++ = (token1 << 24) | (token2 << 16) | (token3 << 8) | token4;
        token1 = (*unpacked++) & mask;
        token2 = (*unpacked++) & mask;
        token3 = (*unpacked++) & mask;
        token4 = (*unpacked++) & mask;
        *packed++ = (token1 << 24) | (token2 << 16) | (token3 << 8) | token4;
        n -= 8;
      }
    }
    if (nbits == 6) {
      while (n > 15) {
        token1 = (*unpacked++) & mask;
        token2 = (*unpacked++) & mask;
        token3 = (*unpacked++) & mask;
        token4 = (*unpacked++) & mask;
        token5 = (*unpacked++) & mask;
        token6 = (*unpacked++) & mask;
        token7 = (*unpacked++) & mask;
        token8 = (*unpacked++) & mask;
        *packed++ = (token1 << 26) | (token2 << 20) | (token3 << 14) | (token4 << 8) | (token5 << 2) | (token6 >> 4);
        token1 = (*unpacked++) & mask;
        token2 = (*unpacked++) & mask;
        token3 = (*unpacked++) & mask;
        *packed++ = (token6 << 28) | (token7 << 22) | (token8 << 16) | (token1 << 10) | (token2 << 4) | (token3 >> 2);
        token4 = (*unpacked++) & mask;
        token5 = (*unpacked++) & mask;
        token6 = (*unpacked++) & mask;
        token7 = (*unpacked++) & mask;
        token8 = (*unpacked++) & mask;
        *packed++ = (token3 << 30) | (token4 << 24) | (token5 << 18) | (token6 << 12) | (token7 << 6) | token8;
        n -= 16;
      }
    }
    if (nbits == 4) {
      while (n > 7) {
        token = (*unpacked++) & mask;
        token = (token << 4) | ((*unpacked++) & mask);
        token = (token << 4) | ((*unpacked++) & mask);
        token = (token << 4) | ((*unpacked++) & mask);
        token = (token << 4) | ((*unpacked++) & mask);
        token = (token << 4) | ((*unpacked++) & mask);
        token = (token << 4) | ((*unpacked++) & mask);
        *packed++ = (token << 4) | ((*unpacked++) & mask);
        n -= 8;
      }
    }
    if (nbits == 2) {
      while (n > 15) {
        token = (*unpacked++) & mask;
        token = (token << 2) | ((*unpacked++) & mask);
        token = (token << 2) | ((*unpacked++) & mask);
        token = (token << 2) | ((*unpacked++) & mask);
        token = (token << 2) | ((*unpacked++) & mask);
        token = (token << 2) | ((*unpacked++) & mask);
        token = (token << 2) | ((*unpacked++) & mask);
        token = (token << 2) | ((*unpacked++) & mask);
        token = (token << 2) | ((*unpacked++) & mask);
        token = (token << 2) | ((*unpacked++) & mask);
        token = (token << 2) | ((*unpacked++) & mask);
        token = (token << 2) | ((*unpacked++) & mask);
        token = (token << 2) | ((*unpacked++) & mask);
        token = (token << 2) | ((*unpacked++) & mask);
        token = (token << 2) | ((*unpacked++) & mask);
        *packed++ = (token << 2) | ((*unpacked++) & mask);
        n -= 16;
      }
    }
    if (nbits == 1) {
      while (n > 31) {
        token = 0;
        i = 8;
        while (i-- != 0) {
          token = (token << 1) | ((*unpacked++) & 1);
          token = (token << 1) | ((*unpacked++) & 1);
          token = (token << 1) | ((*unpacked++) & 1);
          token = (token << 1) | ((*unpacked++) & 1);
        }
        *packed++ = token;
        n -= 32;
      }
    }
  }
  if (bleft < 32)
    temp = *packed >> bleft;
  while (n > 1) {
    token = (*unpacked++) & mask;
    bleft -= nbits;
    temp = (temp << nbits) | token;
    if (bleft <= 0) {
      if (bleft < 0)
        temp >>= (-bleft);
      *packed++ = temp;
      bleft += 32;
      temp = token;
    }
    token = (*unpacked++) & mask;
    bleft -= nbits;
    temp = (temp << nbits) | token;
    if (bleft <= 0) {
      if (bleft < 0)
        temp >>= (-bleft);
      *packed++ = temp;
      bleft += 32;
      temp = token;
    }
    n -= 2;
  }
  while (n-- > 0) {
    token = (*unpacked++) & mask;
    bleft -= nbits;
    temp = (temp << nbits) | token;
    if (bleft <= 0) {
      if (bleft < 0)
        temp >>= (-bleft);
      *packed++ = temp;
      bleft += 32;
      temp = token;
    }
  }
  if (bleft < 32)
    *packed = (temp << bleft);
}
```