user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<RepadBitmap>:
  endbr64
  push   %r15
  mov    %ecx,%eax
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbx
  mov    %rsi,%rdi
  sub    $0x18,%rsp
  mov    %r9d,0x4(%rsp)
  cmp    $0x4,%edx
  je     L105
  ja     L62
  cmp    $0x1,%edx
  je     L13
  cmp    $0x2,%edx
  jne    L177
  lea    0xf(%r8),%ebp
  sar    $0x4,%ebp
  add    %ebp,%ebp
L178:
  cmp    $0x4,%eax
  je     L25
L53:
  ja     L170
  cmp    $0x1,%eax
  je     L98
  cmp    $0x2,%eax
  jne    L177
  lea    0xf(%r8),%r15d
  sar    $0x4,%r15d
  add    %r15d,%r15d
L24:
  mov    0x4(%rsp),%eax
  cmp    %r15d,%ebp
  mov    %r15d,%r12d
  cmovle %ebp,%r12d
  test   %eax,%eax
  jle    L132
  sub    %r12d,%ebp
  movslq %r12d,%r13
  movslq %ebp,%rax
  xor    %ebp,%ebp
  mov    %rax,0x8(%rsp)
  nopw   0x0(%rax,%rax,1)
L172:
  xor    %eax,%eax
  test   %r12d,%r12d
  jle    L19
  nopw   0x0(%rax,%rax,1)
L56:
  movzbl (%rbx,%rax,1),%edx
  mov    %dl,(%rdi,%rax,1)
  add    $0x1,%rax
  cmp    %rax,%r13
  jne    L56
  add    %r13,%rbx
  add    %r13,%rdi
  mov    %r12d,%eax
L19:
  cmp    %eax,%r15d
  jle    L30
  lea    -0x1(%r15),%r14d
  xor    %esi,%esi
  sub    %eax,%r14d
  add    $0x1,%r14
  mov    %r14,%rdx
  call   <memset@plt>
  mov    %rax,%rdi
  add    %r14,%rdi
L30:
  add    0x8(%rsp),%rbx
  add    $0x1,%ebp
  cmp    %ebp,0x4(%rsp)
  jne    L172
L132:
  mov    0x4(%rsp),%eax
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  imul   %r15d,%eax
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L170:
  cmp    $0x8,%eax
  jne    L177
  lea    0x3f(%r8),%r15d
  sar    $0x6,%r15d
  shl    $0x3,%r15d
  jmp    L24
L62:
  cmp    $0x8,%edx
  jne    L177
  lea    0x3f(%r8),%ebp
  sar    $0x6,%ebp
  shl    $0x3,%ebp
  cmp    $0x4,%eax
  jne    L53
L25:
  lea    0x1f(%r8),%r15d
  sar    $0x5,%r15d
  shl    $0x2,%r15d
  jmp    L24
  nopl   (%rax)
L177:
  add    $0x18,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L13:
  lea    0x7(%r8),%ebp
  sar    $0x3,%ebp
  jmp    L178
L105:
  lea    0x1f(%r8),%ebp
  sar    $0x5,%ebp
  shl    $0x2,%ebp
  jmp    L178
L98:
  lea    0x7(%r8),%r15d
  sar    $0x3,%r15d
  jmp    L24
```

assistant: ```c
int RepadBitmap(char *pSrc, char *pDst, unsigned int srcPad, unsigned int dstPad, int width, int height) {
  int srcWidthBytes, dstWidthBytes;
  int row, col;
  char *pTmpSrc, *pTmpDst;
  switch (srcPad) {
  case 1:
    srcWidthBytes = (width + 7) >> 3;
    break;
  case 2:
    srcWidthBytes = ((width + 15) >> 4) << 1;
    break;
  case 4:
    srcWidthBytes = ((width + 31) >> 5) << 2;
    break;
  case 8:
    srcWidthBytes = ((width + 63) >> 6) << 3;
    break;
  default:
    return 0;
  }
  switch (dstPad) {
  case 1:
    dstWidthBytes = (width + 7) >> 3;
    break;
  case 2:
    dstWidthBytes = ((width + 15) >> 4) << 1;
    break;
  case 4:
    dstWidthBytes = ((width + 31) >> 5) << 2;
    break;
  case 8:
    dstWidthBytes = ((width + 63) >> 6) << 3;
    break;
  default:
    return 0;
  }
  width = srcWidthBytes;
  if (width > dstWidthBytes)
    width = dstWidthBytes;
  pTmpSrc = pSrc;
  pTmpDst = pDst;
  for (row = 0; row < height; row++) {
    for (col = 0; col < width; col++)
      *pTmpDst++ = *pTmpSrc++;
    while (col < dstWidthBytes) {
      *pTmpDst++ = '\0';
      col++;
    }
    pTmpSrc += srcWidthBytes - width;
  }
  return dstWidthBytes * height;
}
```