user: What would the C source look like for the assembly code provided here:

```asm
<fastBlur>:
  endbr64
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbx
  mov    %esi,%r11d
  mov    %edx,%edi
  mov    %ecx,%esi
  cmp    $0x3,%ecx
  je     L310
  cmp    $0x7,%ecx
  jne    L277
  mov    $0x1,%r13d
  mov    $0x3,%ecx
L382:
  cmp    $0x3f,%esi
  jne    L440
  mov    $0x6,%ecx
  jmp    L480
L277:
  cmp    $0x1,%ecx
  sete   %cl
  movzbl %cl,%ecx
  cmp    $0xf,%esi
  jne    L218
  mov    $0x1,%r13d
  mov    $0x4,%ecx
L440:
  cmp    $0x7f,%esi
  je     L188
  test   %r13d,%r13d
  jne    L480
  cmp    $0x1,%r11d
  jle    L522
  lea    -0x1(%r11),%r14d
  mov    $0x0,%ebp
  movslq %r11d,%r10
  lea    0x1(%rbx),%r12
  lea    0x1(%rsi),%r9d
  jmp    L126
L218:
  mov    %ecx,%r13d
  jmp    L447
L310:
  mov    $0x1,%r13d
  mov    $0x2,%ecx
L447:
  cmp    $0x1f,%esi
  jne    L382
  mov    $0x5,%ecx
L480:
  cmp    $0x1,%r11d
  jle    L431
  lea    -0x1(%r11),%r12d
  mov    $0x0,%r10d
  movslq %r11d,%r9
  lea    0x1(%rbx),%rbp
  jmp    L136
L107:
  add    $0x1,%r10
  cmp    %r12,%r10
  je     L496
L136:
  lea    0x0(%rbp,%r10,1),%rdx
  mov    $0x0,%r8d
  test   %edi,%edi
  jle    L107
L57:
  movzbl -0x1(%rdx),%eax
  imul   %esi,%eax
  movzbl (%rdx),%r13d
  add    %r13d,%eax
  sar    %cl,%eax
  mov    %al,(%rdx)
  add    $0x1,%r8d
  add    %r9,%rdx
  cmp    %r8d,%edi
  jne    L57
  jmp    L107
L188:
  mov    $0x7,%ecx
  jmp    L480
L228:
  sub    $0x1,%r10
  sub    $0x1,%ebp
  js     L431
L544:
  mov    %r10,%rdx
  mov    $0x0,%r8d
  test   %edi,%edi
  jle    L228
L312:
  movzbl 0x1(%rdx),%eax
  imul   %esi,%eax
  movzbl (%rdx),%r12d
  add    %r12d,%eax
  sar    %cl,%eax
  mov    %al,(%rdx)
  add    $0x1,%r8d
  add    %r9,%rdx
  cmp    %r8d,%edi
  jne    L312
  jmp    L228
L431:
  test   %r11d,%r11d
  jle    L446
  mov    %rbx,%rbp
  mov    %r11d,%r10d
  neg    %r10d
  movslq %r11d,%r9
  jmp    L532
L271:
  add    $0x1,%rbp
  add    $0x1,%r10d
  je     L446
L532:
  mov    %rbp,%rdx
  mov    $0x1,%r8d
  cmp    $0x1,%edi
  jle    L271
L99:
  movzbl (%rdx),%eax
  imul   %esi,%eax
  movzbl (%rdx,%r9,1),%r12d
  add    %r12d,%eax
  sar    %cl,%eax
  mov    %al,(%rdx,%r9,1)
  add    $0x1,%r8d
  add    %r9,%rdx
  cmp    %r8d,%edi
  jne    L99
  jmp    L271
L446:
  sub    $0x2,%edi
  js     L204
  mov    %edi,%r10d
  imul   %r11d,%r10d
  lea    -0x1(%r11),%eax
  lea    0x1(%rbx,%rax,1),%rbp
  movslq %r11d,%r9
  jmp    L128
L481:
  sub    $0x1,%edi
  sub    %r11d,%r10d
  cmp    $0xffffffff,%edi
  je     L204
L128:
  movslq %r10d,%r8
  lea    (%rbx,%r8,1),%rdx
  add    %rbp,%r8
  test   %r11d,%r11d
  jle    L481
L238:
  movzbl (%rdx,%r9,1),%eax
  imul   %esi,%eax
  movzbl (%rdx),%r12d
  add    %r12d,%eax
  sar    %cl,%eax
  mov    %al,(%rdx)
  add    $0x1,%rdx
  cmp    %rdx,%r8
  jne    L238
  jmp    L481
L17:
  movzbl -0x1(%rcx),%eax
  imul   %esi,%eax
  movzbl (%rcx),%edx
  add    %edx,%eax
  cltd
  idiv   %r9d
  mov    %al,(%rcx)
  add    $0x1,%r8d
  add    %r10,%rcx
  cmp    %r8d,%edi
  jne    L17
L513:
  add    $0x1,%rbp
  cmp    %r14,%rbp
  je     L273
L126:
  lea    (%r12,%rbp,1),%rcx
  mov    %r13d,%r8d
  test   %edi,%edi
  jg     L17
  jmp    L513
L424:
  movzbl 0x1(%rcx),%eax
  imul   %esi,%eax
  movzbl (%rcx),%edx
  add    %edx,%eax
  cltd
  idiv   %r9d
  mov    %al,(%rcx)
  add    $0x1,%r8d
  add    %r10,%rcx
  cmp    %r8d,%edi
  jne    L424
L486:
  sub    $0x1,%rbp
  sub    $0x1,%r12d
  js     L522
L282:
  mov    %rbp,%rcx
  mov    %r13d,%r8d
  test   %edi,%edi
  jg     L424
  jmp    L486
L522:
  test   %r11d,%r11d
  jle    L145
  mov    %rbx,%r12
  mov    %r11d,%ebp
  neg    %ebp
  movslq %r11d,%r9
  lea    0x1(%rsi),%r10d
  jmp    L163
L100:
  movzbl (%rcx),%eax
  imul   %esi,%eax
  movzbl (%rcx,%r9,1),%edx
  add    %edx,%eax
  cltd
  idiv   %r10d
  mov    %al,(%rcx,%r9,1)
  add    $0x1,%r8d
  add    %r9,%rcx
  cmp    %r8d,%edi
  jne    L100
L425:
  add    $0x1,%r12
  add    $0x1,%ebp
  je     L145
L163:
  mov    %r12,%rcx
  mov    $0x1,%r8d
  cmp    $0x1,%edi
  jg     L100
  jmp    L425
L145:
  sub    $0x2,%edi
  mov    %edi,%ecx
  js     L204
  mov    %edi,%ebp
  imul   %r11d,%ebp
  lea    -0x1(%r11),%eax
  lea    0x1(%rbx,%rax,1),%r12
  movslq %r11d,%r10
  lea    0x1(%rsi),%r8d
  jmp    L476
L130:
  movzbl (%rdi,%r10,1),%eax
  imul   %esi,%eax
  movzbl (%rdi),%edx
  add    %edx,%eax
  cltd
  idiv   %r8d
  mov    %al,(%rdi)
  add    $0x1,%rdi
  cmp    %r9,%rdi
  jne    L130
L247:
  sub    $0x1,%ecx
  sub    %r11d,%ebp
  cmp    $0xffffffff,%ecx
  je     L204
L476:
  movslq %ebp,%r9
  lea    (%rbx,%r9,1),%rdi
  add    %r12,%r9
  test   %r11d,%r11d
  jg     L130
  jmp    L247
L496:
  lea    -0x2(%r11),%ebp
  movslq %ebp,%r10
  add    %rbx,%r10
  movslq %r11d,%r9
  jmp    L544
L273:
  lea    -0x2(%r11),%r12d
  movslq %r12d,%rbp
  add    %rbx,%rbp
  movslq %r11d,%r10
  lea    0x1(%rsi),%r9d
  jmp    L282
L204:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
```

assistant: ```c
void fastBlur(unsigned char *img, int w, int h, int size) {
  int x, y;
  int m = size;
  int divZ = 0;
  int canFastDiv = 0;
  if (size == 1)
    divZ = 1, canFastDiv = 1;
  if (size == 3)
    divZ = 2, canFastDiv = 1;
  if (size == 7)
    divZ = 3, canFastDiv = 1;
  if (size == 15)
    divZ = 4, canFastDiv = 1;
  if (size == 31)
    divZ = 5, canFastDiv = 1;
  if (size == 63)
    divZ = 6, canFastDiv = 1;
  if (size == 127)
    divZ = 7, canFastDiv = 1;
  if (canFastDiv) {
    for (x = 1; x < w; x++)
      for (y = 0; y < h; y++)
        img[x + w * y] = (m * img[x - 1 + w * y] + img[x + w * y]) >> divZ;
    for (x = w - 2; x >= 0; x--)
      for (y = 0; y < h; y++)
        img[x + w * y] = (m * img[x + 1 + w * y] + img[x + w * y]) >> divZ;
    for (x = 0; x < w; x++)
      for (y = 1; y < h; y++)
        img[x + w * y] = (m * img[x - w + w * y] + img[x + w * y]) >> divZ;
    for (y = h - 2; y >= 0; y--)
      for (x = 0; x < w; x++)
        img[x + w * y] = (m * img[x + w + w * y] + img[x + w * y]) >> divZ;
    return;
  }
  for (x = 1; x < w; x++)
    for (y = 0; y < h; y++)
      img[x + w * y] = (m * img[x - 1 + w * y] + img[x + w * y]) / (m + 1);
  for (x = w - 2; x >= 0; x--)
    for (y = 0; y < h; y++)
      img[x + w * y] = (m * img[x + 1 + w * y] + img[x + w * y]) / (m + 1);
  for (x = 0; x < w; x++)
    for (y = 1; y < h; y++)
      img[x + w * y] = (m * img[x - w + w * y] + img[x + w * y]) / (m + 1);
  for (y = h - 2; y >= 0; y--)
    for (x = 0; x < w; x++)
      img[x + w * y] = (m * img[x + w + w * y] + img[x + w * y]) / (m + 1);
}
```