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

```asm
<main>:
  endbr64
  push   %r15
  mov    $0x2000000,%edi
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  call   <malloc@plt>
  mov    $0x2000000,%edi
  mov    %rax,%rbx
  mov    %rax,(%rsp)
  call   <malloc@plt>
  mov    $0x2000000,%edi
  mov    %rax,%r15
  mov    %rax,0x8(%rsp)
  call   <malloc@plt>
  mov    %rbx,%rdi
  mov    %rax,%r12
  call   <initializeCero@plt>
  mov    %r12,%rdi
  call   <initializeCero@plt>
  mov    %r15,%rdi
  call   <initializeCero@plt>
  mov    %rbx,%rdi
  call   <interiorRandom@plt>
  mov    %rbx,%rdi
  call   <max@plt>
  lea    D73(%rip),%rdi
  xor    %eax,%eax
  cvttsd2si %xmm0,%esi
  call   <printf@plt>
  lea    0x7ff8(%r12),%rax
  movl   $0x0,0x14(%rsp)
  movapd D17(%rip),%xmm2
  mov    %rax,0x18(%rsp)
  movapd D87(%rip),%xmm1
  movsd  D17(%rip),%xmm3
  mov    0x8(%rsp),%rax
L5:
  mov    (%rsp),%rbx
  mov    0x18(%rsp),%r11
  lea    0x4008(%rax),%rcx
  sub    %r12,%rax
  mov    $0x8000,%r15d
  movsd  D87(%rip),%xmm4
  mov    $0xffffffffffffc000,%rbp
  xor    %r14d,%r14d
  lea    0x10(%rbx),%rdx
  sub    %r12,%rbx
  mov    $0x800,%r13d
  mov    %rbx,%r10
  mov    %rax,%rbx
L26:
  lea    -0x3fe8(%r11),%rax
  add    $0x800,%r13d
  cmp    %rax,%rcx
  je     L4
  mov    %rcx,%rax
  sub    %rdx,%rax
  cmp    $0x8000,%rax
  jbe    L4
  mov    %r12,%r9
  lea    -0x8(%rdx),%r8
  lea    0x7ff8(%rdx),%rdi
  xor    %eax,%eax
  lea    0x3ff0(%rdx),%rsi
  sub    %rbp,%r9
  add    $0x4000,%rdx
  cs nopw 0x0(%rax,%rax,1)
L8:
  movupd 0x8(%r9,%rax,1),%xmm0
  movupd (%r8,%rax,1),%xmm5
  movupd (%rdi,%rax,1),%xmm6
  movupd (%rsi,%rax,1),%xmm7
  mulpd  %xmm2,%xmm0
  addpd  %xmm5,%xmm0
  movupd (%rdx,%rax,1),%xmm5
  addpd  %xmm6,%xmm0
  addpd  %xmm7,%xmm0
  addpd  %xmm5,%xmm0
  mulpd  %xmm1,%xmm0
  movups %xmm0,(%rcx,%rax,1)
  add    $0x10,%rax
  cmp    $0x3ff0,%rax
  jne    L8
L78:
  add    $0x4000,%rcx
  add    $0x4000,%r14
  sub    $0x4000,%rbp
  add    $0x4000,%r15
  add    $0x4000,%r11
  cmp    $0x3ff800,%r13d
  jne    L26
  mov    (%rsp),%r14
  mov    %r14,%rdi
  call   <max@plt>
  mov    0x14(%rsp),%ebx
  mov    $0x1,%eax
  lea    D13(%rip),%rdi
  mov    %ebx,%esi
  add    $0x1,%ebx
  call   <printf@plt>
  mov    0x8(%rsp),%rax
  mov    %ebx,0x14(%rsp)
  mov    %r14,0x8(%rsp)
  cmp    $0xa,%ebx
  je     L59
  mov    %rax,(%rsp)
  mov    D17(%rip),%rax
  movapd D87(%rip),%xmm1
  movapd D17(%rip),%xmm2
  movq   %rax,%xmm3
  mov    %r14,%rax
  jmp    L5
L4:
  mov    (%rsp),%r8
  lea    (%r14,%rbp,1),%rdi
  lea    0x0(%rbp,%r15,1),%rsi
  sub    %r12,%rdi
  sub    %r12,%rsi
  lea    -0x3ff0(%r11),%rax
  add    %r8,%rdi
  add    %r8,%rsi
  nopl   0x0(%rax)
L0:
  movsd  (%rax),%xmm0
  mulsd  %xmm3,%xmm0
  addsd  (%rdi,%rax,1),%xmm0
  addsd  (%rsi,%rax,1),%xmm0
  addsd  -0x8(%r10,%rax,1),%xmm0
  addsd  0x8(%r10,%rax,1),%xmm0
  mulsd  %xmm4,%xmm0
  movsd  %xmm0,(%rbx,%rax,1)
  add    $0x8,%rax
  cmp    %r11,%rax
  jne    L0
  add    $0x4000,%rdx
  jmp    L78
L59:
  add    $0x28,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
```

tool_calls: name: extract_symbolic_data
arguments: data_label: D73
datatype: string
name: extract_symbolic_data
arguments: data_label: D17
datatype: byte[16]
name: extract_symbolic_data
arguments: data_label: D87
datatype: f64[2]
name: extract_symbolic_data
arguments: data_label: D13
datatype: string

tool: D73: Initial=%f


tool: {"D17": [0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x3f,0x00,0x00,0x00,0x00,0x00,0x00,0x40,0x3f]}

tool: {"D87": [0.25,0.25]}

tool: D13: Iter %d: max=%f


assistant: ```c
int main() {
  double h2 = 1.0 / 2048;
  double *u;
  double *u_new;
  double *temp;
  double *f;
  int i, j, k;
  u = (double *)malloc(2048 * 2048 * sizeof(double));
  u_new = (double *)malloc(2048 * 2048 * sizeof(double));
  f = (double *)malloc(2048 * 2048 * sizeof(double));
  initializeCero(u);
  initializeCero(f);
  initializeCero(u_new);
  interiorRandom(u);
  printf("Initial=%f\n", max(u));
  for (k = 0; k < 10; k++) {
    for (i = 1; i < 2048 - 1; i++) {
      for (j = 1; j < 2048 - 1; j++) {
        u_new[i * 2048 + j] = 0.25 * (h2 * f[i * 2048 + j] + u[(i - 1) * 2048 + j] + u[(i + 1) * 2048 + j] + +u[i * 2048 + j - 1] + u[i * 2048 + j + 1]);
      }
    }
    temp = u;
    u = u_new;
    u_new = temp;
    printf("Iter %d: max=%f\n", k, max(u_new));
  }
}
```