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

```asm
<blurYAlpha>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  mov    %ecx,%ebp
  push   %rbx
  sub    $0x38,%rsp
  mov    0x78(%rsp),%ecx
  mov    0x70(%rsp),%eax
  mov    0x80(%rsp),%r13d
  mov    %ecx,(%rsp)
  test   %ebp,%ebp
  jle    L25
  movslq %esi,%rbx
  movslq %r9d,%r9
  lea    0x0(%rbp,%rbp,1),%r15d
  mov    %r8d,%r12d
  imul   %ebx,%eax
  movzbl %r12b,%r12d
  imul   %ebx,%ebp
  cltq
  add    %r9,%rax
  lea    (%rdi,%rax,1),%r14
  lea    0x1(%r15),%eax
  lea    (%r15,%r13,1),%edi
  mov    %eax,0xc(%rsp)
  call   <allocMemory@plt>
  mov    %r12d,%esi
  mov    %r15d,%edx
  mov    %rax,%rdi
  mov    %rax,0x10(%rsp)
  call   <clearMemory@plt>
  mov    0x10(%rsp),%r9
  movslq %r13d,%r8
  mov    %r12d,%esi
  mov    %r15d,%edx
  mov    %r8,0x18(%rsp)
  lea    (%r9,%r8,1),%rdi
  call   <clearMemory@plt>
  mov    %r13d,%edi
  call   <allocMemory@plt>
  xor    %esi,%esi
  mov    %r13d,%edx
  mov    %rax,%rdi
  mov    %rax,%r12
  call   <clearMemory@plt>
  movslq (%rsp),%rcx
  mov    0x10(%rsp),%r9
  mov    0x18(%rsp),%r8
  test   %ecx,%ecx
  jle    L5
  movslq %ebp,%rax
  lea    (%r14,%rcx,1),%rsi
  lea    (%r12,%r8,1),%rbp
  mov    %r9,(%rsp)
  mov    %rax,0x10(%rsp)
  movslq %r15d,%rax
  lea    (%r9,%rax,1),%rdi
  mov    %r13d,%eax
  mov    %rsi,0x20(%rsp)
  sub    %r15d,%eax
  mov    %rdi,0x28(%rsp)
  movslq %eax,%r15
  mov    %eax,0x18(%rsp)
  mov    %rbp,%rax
  mov    %rbx,%rbp
  add    %rdi,%r15
  mov    %r13d,%ebx
  mov    %r12,%r13
  mov    %rax,%r12
  nopw   0x0(%rax,%rax,1)
L2:
  mov    0x10(%rsp),%rax
  mov    0x18(%rsp),%edx
  lea    (%r14,%rax,1),%rcx
  mov    0x28(%rsp),%rax
  test   %edx,%edx
  jle    L1
  xchg   %ax,%ax
L60:
  movzbl (%rcx),%edx
  add    $0x1,%rax
  add    %rbp,%rcx
  mov    %dl,-0x1(%rax)
  cmp    %r15,%rax
  jne    L60
L1:
  mov    0xc(%rsp),%ecx
  mov    (%rsp),%rsi
  mov    %ebx,%edx
  mov    %r13,%rdi
  call   <boxBlurAlpha@plt>
  mov    %r13,%rax
  mov    %r14,%rcx
  test   %ebx,%ebx
  jle    L39
  xchg   %ax,%ax
L48:
  movzbl (%rax),%edx
  add    $0x1,%rax
  mov    %dl,(%rcx)
  add    %rbp,%rcx
  cmp    %rax,%r12
  jne    L48
L39:
  add    $0x1,%r14
  cmp    %r14,0x20(%rsp)
  jne    L2
  mov    (%rsp),%r9
  mov    %r13,%r12
L5:
  mov    %r12,%rdi
  mov    %r9,(%rsp)
  call   <freeMemory@plt>
  mov    (%rsp),%rdi
  add    $0x38,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    10a0 <freeMemory@plt>
L25:
  add    $0x38,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

assistant: ```c
void blurYAlpha(unsigned char *img, int width, int height, int distance, unsigned char borderAlpha, int rx, int ry, int rw, int rh) {
  if (distance < 1) {
    return;
  }
  unsigned char *src = img + (ry * width) + rx;
  int dist2 = distance << 1;
  int windowLength = dist2 + 1;
  unsigned char *lineBufferIn = allocMemory(rh + dist2);
  clearMemory(lineBufferIn, borderAlpha, dist2);
  clearMemory(lineBufferIn + rh, borderAlpha, dist2);
  unsigned char *lineBufferOut = allocMemory(rh);
  clearMemory(lineBufferOut, 0, rh);
  unsigned char *psrc;
  unsigned char *pline;
  int srcOffs = distance * width;
  int x, y;
  for (x = 0; x < rw; ++x) {
    psrc = src + srcOffs;
    pline = lineBufferIn + dist2;
    for (y = 0; y < rh - dist2; ++y) {
      *pline++ = *psrc;
      psrc += width;
    }
    boxBlurAlpha(lineBufferOut, lineBufferIn, rh, windowLength);
    psrc = src;
    pline = lineBufferOut;
    for (y = 0; y < rh; ++y) {
      *psrc = *pline++;
      psrc += width;
    }
    src++;
  }
  freeMemory(lineBufferOut);
  freeMemory(lineBufferIn);
}
```