user: 请从给定的汇编指令推导出C源代码：

```asm
<fcc>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x28(%rbp)
  mov    %esi,-0x2c(%rbp)
  mov    %edx,-0x30(%rbp)
  movsd  %xmm0,-0x38(%rbp)
  movl   $0x0,-0x14(%rbp)
  movl   $0x0,-0x4(%rbp)
  jmp    L105
L41:
  movl   $0x0,-0x10(%rbp)
  jmp    L2
L75:
  movl   $0x0,-0xc(%rbp)
  jmp    L76
L103:
  movl   $0x0,-0x8(%rbp)
  jmp    L59
L29:
  pxor   %xmm0,%xmm0
  cvtsi2sdl -0x10(%rbp),%xmm0
  movapd %xmm0,%xmm1
  mulsd  -0x38(%rbp),%xmm1
  pxor   %xmm0,%xmm0
  cvtsi2sdl -0x4(%rbp),%xmm0
  movapd %xmm0,%xmm2
  mulsd  -0x38(%rbp),%xmm2
  movsd  D42(%rip),%xmm0
  mulsd  %xmm2,%xmm0
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  addsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  pxor   %xmm0,%xmm0
  cvtsi2sdl -0xc(%rbp),%xmm0
  movapd %xmm0,%xmm1
  mulsd  -0x38(%rbp),%xmm1
  pxor   %xmm0,%xmm0
  cvtsi2sdl -0x4(%rbp),%xmm0
  movapd %xmm0,%xmm2
  mulsd  -0x38(%rbp),%xmm2
  movsd  D42(%rip),%xmm0
  mulsd  %xmm2,%xmm0
  mov    -0x14(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  addsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  pxor   %xmm0,%xmm0
  cvtsi2sdl -0x8(%rbp),%xmm0
  mov    -0x14(%rbp),%eax
  cltq
  add    $0x2,%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mulsd  -0x38(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  addl   $0x3,-0x14(%rbp)
  addl   $0x1,-0x8(%rbp)
L59:
  mov    -0x8(%rbp),%eax
  cmp    -0x30(%rbp),%eax
  jl     L29
  addl   $0x1,-0xc(%rbp)
L76:
  mov    -0xc(%rbp),%eax
  cmp    -0x30(%rbp),%eax
  jl     L103
  addl   $0x1,-0x10(%rbp)
L2:
  mov    -0x10(%rbp),%eax
  cmp    -0x30(%rbp),%eax
  jl     L75
  addl   $0x1,-0x4(%rbp)
L105:
  cmpl   $0x1,-0x4(%rbp)
  jle    L41
  movl   $0x1,-0x4(%rbp)
  jmp    L27
L111:
  movl   $0x0,-0x10(%rbp)
  jmp    L158
L17:
  movl   $0x0,-0xc(%rbp)
  jmp    L0
L79:
  movl   $0x0,-0x8(%rbp)
  jmp    L48
L6:
  pxor   %xmm0,%xmm0
  cvtsi2sdl -0x10(%rbp),%xmm0
  movapd %xmm0,%xmm1
  mulsd  -0x38(%rbp),%xmm1
  mov    $0x2,%eax
  sub    -0x4(%rbp),%eax
  pxor   %xmm0,%xmm0
  cvtsi2sd %eax,%xmm0
  movapd %xmm0,%xmm2
  mulsd  -0x38(%rbp),%xmm2
  movsd  D42(%rip),%xmm0
  mulsd  %xmm2,%xmm0
  mov    -0x14(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  addsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  pxor   %xmm0,%xmm0
  cvtsi2sdl -0xc(%rbp),%xmm0
  movapd %xmm0,%xmm1
  mulsd  -0x38(%rbp),%xmm1
  mov    -0x4(%rbp),%eax
  sub    $0x1,%eax
  pxor   %xmm0,%xmm0
  cvtsi2sd %eax,%xmm0
  movapd %xmm0,%xmm2
  mulsd  -0x38(%rbp),%xmm2
  movsd  D42(%rip),%xmm0
  mulsd  %xmm2,%xmm0
  mov    -0x14(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  addsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  pxor   %xmm0,%xmm0
  cvtsi2sdl -0x8(%rbp),%xmm0
  movapd %xmm0,%xmm1
  mulsd  -0x38(%rbp),%xmm1
  movsd  -0x38(%rbp),%xmm2
  movsd  D42(%rip),%xmm0
  mulsd  %xmm2,%xmm0
  mov    -0x14(%rbp),%eax
  cltq
  add    $0x2,%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  addsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  addl   $0x3,-0x14(%rbp)
  addl   $0x1,-0x8(%rbp)
L48:
  mov    -0x8(%rbp),%eax
  cmp    -0x30(%rbp),%eax
  jl     L6
  addl   $0x1,-0xc(%rbp)
L0:
  mov    -0xc(%rbp),%eax
  cmp    -0x30(%rbp),%eax
  jl     L79
  addl   $0x1,-0x10(%rbp)
L158:
  mov    -0x10(%rbp),%eax
  cmp    -0x30(%rbp),%eax
  jl     L17
  addl   $0x1,-0x4(%rbp)
L27:
  cmpl   $0x2,-0x4(%rbp)
  jle    L111
  nop
  nop
  pop    %rbp
  ret
```

tool_calls: name: disassemble_data
arguments: data_label: D42
data_type: f64

tool: D42: 0.5

assistant: ```c
void fcc(double x[], int npart, int mm, double a) {
  int ijk = 0;
  int i, j, k, lg;
  for (lg = 0; lg < 2; lg++)
    for (i = 0; i < mm; i++)
      for (j = 0; j < mm; j++)
        for (k = 0; k < mm; k++) {
          x[ijk] = i * a + lg * a * 0.5;
          x[ijk + 1] = j * a + lg * a * 0.5;
          x[ijk + 2] = k * a;
          ijk += 3;
        }
  for (lg = 1; lg < 3; lg++)
    for (i = 0; i < mm; i++)
      for (j = 0; j < mm; j++)
        for (k = 0; k < mm; k++) {
          x[ijk] = i * a + (2 - lg) * a * 0.5;
          x[ijk + 1] = j * a + (lg - 1) * a * 0.5;
          x[ijk + 2] = k * a + a * 0.5;
          ijk += 3;
        }
}
```