user: 这段汇编代码用C语言表示是什么样的：

```asm
<yscale_up_rgba>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x48,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x38(%rsp)
  xor    %eax,%eax
  test   %esi,%esi
  jle    L83
  sub    $0x1,%esi
  mov    %rdi,%r12
  mov    %rdx,%r13
  mov    %rcx,%rbp
  shr    $0x2,%esi
  xor    %ebx,%ebx
  mov    %esi,%eax
  lea    0x4(%rcx,%rax,4),%rax
  mov    %rax,0x18(%rsp)
  nopw   0x0(%rax,%rax,1)
L64:
  movq   0x8(%r13),%xmm3
  movq   0x0(%r13),%xmm4
  mov    (%r12),%rsi
  mov    0x8(%r12),%rcx
  movaps %xmm3,%xmm1
  movaps %xmm4,%xmm6
  mov    0x10(%r12),%rdx
  mov    0x18(%r12),%rax
  movss  (%rcx,%rbx,1),%xmm2
  shufps $0xe5,%xmm1,%xmm1
  movaps %xmm1,%xmm5
  movss  (%rsi,%rbx,1),%xmm1
  shufps $0xe5,%xmm6,%xmm6
  movaps %xmm6,%xmm7
  movaps %xmm4,%xmm8
  movaps %xmm4,%xmm0
  mulss  %xmm7,%xmm2
  shufps $0xe5,%xmm8,%xmm8
  movaps %xmm3,%xmm6
  mulss  %xmm4,%xmm1
  shufps $0xe0,%xmm4,%xmm4
  mulss  0xc(%rsi,%rbx,1),%xmm0
  mulss  0xc(%rcx,%rbx,1),%xmm7
  mulss  0xc(%rdx,%rbx,1),%xmm6
  addss  %xmm2,%xmm1
  movss  (%rdx,%rbx,1),%xmm2
  mulss  %xmm3,%xmm2
  addss  %xmm7,%xmm0
  addss  %xmm6,%xmm0
  addss  %xmm2,%xmm1
  movss  (%rax,%rbx,1),%xmm2
  mulss  %xmm5,%xmm2
  mulss  0xc(%rax,%rbx,1),%xmm5
  addss  %xmm2,%xmm1
  movq   0x4(%rcx,%rbx,1),%xmm2
  addss  %xmm5,%xmm0
  mulps  %xmm8,%xmm2
  movq   0x4(%rsi,%rbx,1),%xmm8
  movss  %xmm1,0x10(%rsp)
  mulps  %xmm4,%xmm8
  movq   0x4(%rdx,%rbx,1),%xmm4
  movss  %xmm0,0x2c(%rsp)
  addps  %xmm8,%xmm2
  movaps %xmm3,%xmm8
  shufps $0xe5,%xmm3,%xmm3
  shufps $0xe0,%xmm8,%xmm8
  mulps  %xmm8,%xmm4
  addps  %xmm4,%xmm2
  movq   0x4(%rax,%rbx,1),%xmm4
  mulps  %xmm3,%xmm4
  addps  %xmm4,%xmm2
  movlps %xmm2,0x24(%rsp)
  call   <clampf@plt>
  pxor   %xmm3,%xmm3
  mov    $0x1,%edx
  movss  0x10(%rsp),%xmm1
  ucomiss %xmm3,%xmm0
  movss  %xmm0,0xc(%rsp)
  setp   %al
  cmovne %edx,%eax
  test   %al,%al
  je     L79
  ucomiss D17(%rip),%xmm0
  setp   %al
  cmovne %edx,%eax
  test   %al,%al
  je     L79
  lea    0x20(%rsp),%r14
  lea    0x2c(%rsp),%rax
  movaps %xmm1,%xmm0
  mov    %rax,0x10(%rsp)
  mov    %r14,%rax
  mov    %rbp,%r14
  mov    %rax,%r15
L32:
  divss  0xc(%rsp),%xmm0
  call   <clampf@plt>
  add    $0x4,%r15
  add    $0x1,%r14
  movss  %xmm0,-0x4(%r15)
  call   <linear_sample_to_srgb@plt>
  mov    %al,-0x1(%r14)
  cmp    %r15,0x10(%rsp)
  je     L74
  movss  (%r15),%xmm0
  jmp    L32
  nopl   (%rax)
L74:
  movss  D5(%rip),%xmm0
  add    $0x10,%rbx
  add    $0x4,%rbp
  mulss  0xc(%rsp),%xmm0
  call   <f2i@plt>
  mov    %al,-0x1(%rbp)
  cmp    %rbp,0x18(%rsp)
  jne    L64
L83:
  mov    0x38(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L34
  add    $0x48,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L79:
  xor    %r14d,%r14d
  movaps %xmm1,%xmm0
L73:
  call   <linear_sample_to_srgb@plt>
  mov    %al,0x0(%rbp,%r14,1)
  add    $0x1,%r14
  cmp    $0x3,%r14
  je     L74
  movss  0x20(%rsp,%r14,4),%xmm0
  jmp    L73
L34:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: parse_data
arguments: data_tag: D17
type: byte[4]
name: parse_data
arguments: data_tag: D5
type: byte[4]

tool: {"D17": [0x00,0x00,0x80,0x3f]}

tool: {"D5": [0x00,0x00,0x7f,0x43]}

assistant: ```c
void yscale_up_rgba(float **in, int len, float *coeffs, unsigned char *out) {
  int i, j;
  float alpha, sums[4];
  for (i = 0; i < len; i += 4) {
    for (j = 0; j < 4; j++) {
      sums[j] = coeffs[0] * in[0][i + j] + coeffs[1] * in[1][i + j] + coeffs[2] * in[2][i + j] + coeffs[3] * in[3][i + j];
    }
    alpha = clampf(sums[3]);
    for (j = 0; j < 3; j++) {
      if (alpha != 0 && alpha != 1.0f) {
        sums[j] /= alpha;
        sums[j] = clampf(sums[j]);
      }
      out[i + j] = linear_sample_to_srgb(sums[j]);
    }
    out[i + 3] = f2i(alpha * 255.0f);
  }
}
```