user: 请从给定的汇编指令推导出C源代码:

```asm
<__mac_c>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x10,%rsp
  mov    %rdi,%rbp
  mov    %rsi,%r12
  cmp    $0x12,%edx
  je     L34
  mov    %edx,%ebx
  cmp    $0x18,%edx
  je     L56
  cmp    $0x9,%edx
  je     L31
  mov    %edx,%esi
  lea    D3(%rip),%rdi
  mov    $0x0,%eax
  call   <printf@plt>
  mov    %ebx,%edx
  mov    %r12,%rsi
  mov    %rbp,%rdi
  mov    $0x0,%eax
  call   <__mac_g@plt>
  pxor   %xmm0,%xmm0
  cvtsi2ss %eax,%xmm0
  jmp    L45
L31:
  flds   (%rdi)
  fmuls  (%rsi)
  flds   0x4(%rdi)
  fmuls  0x4(%rsi)
  flds   0x8(%rdi)
  fmuls  0x8(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0xc(%rdi)
  fmuls  0xc(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x10(%rdi)
  fmuls  0x10(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x14(%rdi)
  fmuls  0x14(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x18(%rdi)
  fmuls  0x18(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x1c(%rdi)
  fmuls  0x1c(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x20(%rdi)
  fmuls  0x20(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  faddp  %st,%st(1)
  fstps  0xc(%rsp)
  movss  0xc(%rsp),%xmm0
L45:
  add    $0x10,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
L34:
  flds   (%rdi)
  fmuls  (%rsi)
  flds   0x4(%rdi)
  fmuls  0x4(%rsi)
  flds   0x8(%rdi)
  fmuls  0x8(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0xc(%rdi)
  fmuls  0xc(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x10(%rdi)
  fmuls  0x10(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x14(%rdi)
  fmuls  0x14(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x18(%rdi)
  fmuls  0x18(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x1c(%rdi)
  fmuls  0x1c(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x20(%rdi)
  fmuls  0x20(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x24(%rdi)
  fmuls  0x24(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x28(%rdi)
  fmuls  0x28(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x2c(%rdi)
  fmuls  0x2c(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x30(%rdi)
  fmuls  0x30(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x34(%rdi)
  fmuls  0x34(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x38(%rdi)
  fmuls  0x38(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x3c(%rdi)
  fmuls  0x3c(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x40(%rdi)
  fmuls  0x40(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x44(%rdi)
  fmuls  0x44(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  faddp  %st,%st(1)
  fstps  0xc(%rsp)
  movss  0xc(%rsp),%xmm0
  jmp    L45
L56:
  flds   (%rdi)
  fmuls  (%rsi)
  flds   0x4(%rdi)
  fmuls  0x4(%rsi)
  flds   0x8(%rdi)
  fmuls  0x8(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0xc(%rdi)
  fmuls  0xc(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x10(%rdi)
  fmuls  0x10(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x14(%rdi)
  fmuls  0x14(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x18(%rdi)
  fmuls  0x18(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x1c(%rdi)
  fmuls  0x1c(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x20(%rdi)
  fmuls  0x20(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x24(%rdi)
  fmuls  0x24(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x28(%rdi)
  fmuls  0x28(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x2c(%rdi)
  fmuls  0x2c(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x30(%rdi)
  fmuls  0x30(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x34(%rdi)
  fmuls  0x34(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x38(%rdi)
  fmuls  0x38(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x3c(%rdi)
  fmuls  0x3c(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x40(%rdi)
  fmuls  0x40(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x44(%rdi)
  fmuls  0x44(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x48(%rdi)
  fmuls  0x48(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x4c(%rdi)
  fmuls  0x4c(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x50(%rdi)
  fmuls  0x50(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x54(%rdi)
  fmuls  0x54(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x58(%rdi)
  fmuls  0x58(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  flds   0x5c(%rdi)
  fmuls  0x5c(%rsi)
  fxch   %st(2)
  faddp  %st,%st(1)
  faddp  %st,%st(1)
  fstps  0xc(%rsp)
  movss  0xc(%rsp),%xmm0
  jmp    L45
```

tool_calls: name: unpack_data
arguments: data_tag: D3
datatype: string

tool: D3: Warning: optimize __mac_c(..., ..., %d)


assistant: ```c
extern float __mac_c(const float *a, const float *b, unsigned int size) {
  float f;
  switch (size) {
  case 9:
    asm volatile("flds (%1);\n\t"
                 "fmuls (%2);\n\t"
                 "flds 4(%1);\n\t"
                 "fmuls 4(%2);\n\t"
                 "flds 8(%1);\n\t"
                 "fmuls 8(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 12(%1);\n\t"
                 "fmuls 12(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 16(%1);\n\t"
                 "fmuls 16(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 20(%1);\n\t"
                 "fmuls 20(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 24(%1);\n\t"
                 "fmuls 24(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 28(%1);\n\t"
                 "fmuls 28(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 32(%1);\n\t"
                 "fmuls 32(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "faddp;\n\t"
                 : "=t"(f)
                 : "r"(a), "r"(b)
                 : "memory");
    return f;
  case 18:
    asm volatile("flds (%1);\n\t"
                 "fmuls (%2);\n\t"
                 "flds 4(%1);\n\t"
                 "fmuls 4(%2);\n\t"
                 "flds 8(%1);\n\t"
                 "fmuls 8(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 12(%1);\n\t"
                 "fmuls 12(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 16(%1);\n\t"
                 "fmuls 16(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 20(%1);\n\t"
                 "fmuls 20(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 24(%1);\n\t"
                 "fmuls 24(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 28(%1);\n\t"
                 "fmuls 28(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 32(%1);\n\t"
                 "fmuls 32(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 36(%1);\n\t"
                 "fmuls 36(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 40(%1);\n\t"
                 "fmuls 40(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 44(%1);\n\t"
                 "fmuls 44(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 48(%1);\n\t"
                 "fmuls 48(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 52(%1);\n\t"
                 "fmuls 52(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 56(%1);\n\t"
                 "fmuls 56(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 60(%1);\n\t"
                 "fmuls 60(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 64(%1);\n\t"
                 "fmuls 64(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 68(%1);\n\t"
                 "fmuls 68(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "faddp;\n\t"
                 : "=t"(f)
                 : "r"(a), "r"(b)
                 : "memory");
    return f;
  case 24:
    asm volatile("flds (%1);\n\t"
                 "fmuls (%2);\n\t"
                 "flds 4(%1);\n\t"
                 "fmuls 4(%2);\n\t"
                 "flds 8(%1);\n\t"
                 "fmuls 8(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 12(%1);\n\t"
                 "fmuls 12(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 16(%1);\n\t"
                 "fmuls 16(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 20(%1);\n\t"
                 "fmuls 20(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 24(%1);\n\t"
                 "fmuls 24(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 28(%1);\n\t"
                 "fmuls 28(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 32(%1);\n\t"
                 "fmuls 32(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 36(%1);\n\t"
                 "fmuls 36(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 40(%1);\n\t"
                 "fmuls 40(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 44(%1);\n\t"
                 "fmuls 44(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 48(%1);\n\t"
                 "fmuls 48(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 52(%1);\n\t"
                 "fmuls 52(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 56(%1);\n\t"
                 "fmuls 56(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 60(%1);\n\t"
                 "fmuls 60(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 64(%1);\n\t"
                 "fmuls 64(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 68(%1);\n\t"
                 "fmuls 68(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 72(%1);\n\t"
                 "fmuls 72(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 76(%1);\n\t"
                 "fmuls 76(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 80(%1);\n\t"
                 "fmuls 80(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 84(%1);\n\t"
                 "fmuls 84(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 88(%1);\n\t"
                 "fmuls 88(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "flds 92(%1);\n\t"
                 "fmuls 92(%2);\n\t"
                 "fxch %%st(2);\n\t"
                 "faddp;\n\t"
                 "faddp;\n\t"
                 : "=t"(f)
                 : "r"(a), "r"(b)
                 : "memory");
    return f;
  default:
    printf("Warning: optimize __mac_c(..., ..., %d)\n", size);
    return __mac_g(a, b, size);
  }
}
```