user: 请将以下的汇编代码转换成C语言代码：

```asm
<main>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  lea    -0x3d0000(%rsp),%r11
L33:
  sub    $0x1000,%rsp
  orq    $0x0,(%rsp)
  cmp    %r11,%rsp
  jne    L33
  sub    $0x918,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x3d0908(%rsp)
  xor    %eax,%eax
  call   <clock@plt>
  movq   %xmm0,%r15
  mov    %rsp,%r14
  lea    0x1e8480(%rsp),%rcx
  mov    %r14,%rax
  mov    %r14,%rdx
  pxor   %xmm0,%xmm0
  movsd  D46(%rip),%xmm2
L78:
  movsd  %xmm2,(%rdx)
  movsd  %xmm2,0xf98(%rax)
  movsd  %xmm2,(%rax)
  movq   $0x0,0x1e74e0(%rdx)
  movsd  (%rax),%xmm1
  addsd  0xf98(%rax),%xmm1
  addsd  (%rdx),%xmm1
  pxor   %xmm5,%xmm5
  addsd  %xmm5,%xmm1
  addsd  %xmm1,%xmm0
  add    $0x8,%rdx
  add    $0xfa0,%rax
  cmp    %rcx,%rax
  jne    L78
  divsd  D47(%rip),%xmm0
  lea    0x1f38(%r14),%rdx
  lea    0x1e8478(%r14),%rcx
L17:
  lea    -0xf90(%rdx),%rax
L105:
  movsd  %xmm0,(%rax)
  add    $0x8,%rax
  cmp    %rdx,%rax
  jne    L105
  add    $0xfa0,%rdx
  cmp    %rcx,%rdx
  jne    L17
  lea    0x1e8470(%r14),%rsi
  movsd  D68(%rip),%xmm3
  movq   D30(%rip),%xmm2
  movsd  D52(%rip),%xmm4
  lea    0x3cf960(%rsp),%rdi
L119:
  lea    0x1f30(%r14),%rcx
  lea    0x1e9428(%rsp),%r8
  pxor   %xmm1,%xmm1
L37:
  lea    -0xf90(%rcx),%rax
  mov    %r8,%rdx
L12:
  movsd  -0xf98(%rax),%xmm0
  addsd  0xfa8(%rax),%xmm0
  addsd  (%rax),%xmm0
  addsd  0x10(%rax),%xmm0
  mulsd  %xmm3,%xmm0
  movsd  %xmm0,(%rdx)
  subsd  0x8(%rax),%xmm0
  andpd  %xmm2,%xmm0
  maxsd  %xmm1,%xmm0
  movapd %xmm0,%xmm1
  add    $0x8,%rax
  add    $0x8,%rdx
  cmp    %rcx,%rax
  jne    L12
  add    $0xfa0,%rcx
  add    $0xfa0,%r8
  cmp    %rsi,%rcx
  jne    L37
  comisd %xmm0,%xmm4
  jae    L13
  lea    0x1e9420(%rsp),%rdx
  lea    0xfa0(%rsp),%rcx
L107:
  mov    $0x1,%eax
L98:
  movsd  (%rdx,%rax,8),%xmm0
  movsd  %xmm0,(%rcx,%rax,8)
  add    $0x1,%rax
  cmp    $0x1f3,%rax
  jne    L98
  add    $0xfa0,%rdx
  add    $0xfa0,%rcx
  cmp    %rdi,%rdx
  jne    L107
  jmp    L119
L13:
  mov    $0x0,%eax
  call   <clock@plt>
  movq   %xmm0,%r13
  lea    0xfa0(%r14),%rbp
  add    $0x1e9420,%r14
  lea    D73(%rip),%r12
L63:
  lea    -0xfa0(%rbp),%rbx
L57:
  movsd  (%rbx),%xmm0
  mov    %r12,%rdi
  call   <printf@plt>
  add    $0x8,%rbx
  cmp    %rbx,%rbp
  jne    L57
  mov    $0xa,%edi
  call   <putchar@plt>
  add    $0xfa0,%rbp
  cmp    %r14,%rbp
  jne    L63
  movq   %r13,%xmm0
  movq   %r15,%xmm6
  subsd  %xmm6,%xmm0
  divsd  D21(%rip),%xmm0
  lea    D23(%rip),%rdi
  call   <printf@plt>
  mov    0x3d0908(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L20
  mov    $0x0,%eax
  add    $0x3d0918,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L20:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: extract_symbolic_data
arguments: label: D46
data_type: f64
name: extract_symbolic_data
arguments: label: D47
data_type: f32[2]
name: extract_symbolic_data
arguments: label: D68
data_type: f32[2]
name: extract_symbolic_data
arguments: label: D30
data_type: qword
name: extract_symbolic_data
arguments: label: D52
data_type: f64
name: extract_symbolic_data
arguments: label: D73
data_type: string
name: extract_symbolic_data
arguments: label: D21
data_type: f32[2]
name: extract_symbolic_data
arguments: label: D23
data_type: string

tool: D46: 100

tool: {"D47": [0.0,4.9765625]}

tool: {"D68": [0.0,1.625]}

tool: D30: 9223372036854775807

tool: D52: 0.01

tool: D73: %6.2f 

tool: {"D21": [0.0,10.9073486328125]}

tool: D23: Time %f

assistant: ```c
int main(int argc, char *argv[]) {
  double diff;
  int i, j, k;
  double mean;
  double u[500][500];
  double w[500][500];
  double start, stop;
  start = clock();
  mean = 0.0;
  for (i = 0; i < 500; i++) {
    u[i][0] = u[i][500 - 1] = u[0][i] = 100.0;
    u[500 - 1][i] = 0.0;
    mean += u[i][0] + u[i][500 - 1] + u[0][i] + u[500 - 1][i];
  }
  mean /= (4.0 * 500);
  for (i = 1; i < 500 - 1; i++)
    for (j = 1; j < 500 - 1; j++)
      u[i][j] = mean;
  for (;;) {
    diff = 0.0;
    for (i = 1; i < 500 - 1; i++)
      for (j = 1; j < 500 - 1; j++) {
        w[i][j] = (u[i - 1][j] + u[i + 1][j] + u[i][j - 1] + u[i][j + 1]) / 4.0;
        if (fabs(w[i][j] - u[i][j]) > diff)
          diff = fabs(w[i][j] - u[i][j]);
      }
    if (diff <= 0.01)
      break;
    for (i = 1; i < 500 - 1; i++)
      for (j = 1; j < 500 - 1; j++)
        u[i][j] = w[i][j];
  }
  stop = clock();
  for (i = 0; i < 500; i++) {
    for (j = 0; j < 500; j++)
      printf("%6.2f ", u[i][j]);
    putchar('\n');
  }
  printf("Time %f", (stop - start) / 1000000);
  return 0;
}
```