user: Demonstrate the C code that generates the assembly output below:

```asm
<rpy_to_T44_cov>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x1d0,%rsp
  mov    %rdi,-0x1b8(%rbp)
  mov    %rsi,-0x1c0(%rbp)
  mov    %rdx,-0x1c8(%rbp)
  mov    %rcx,-0x1d0(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  mov    $0x0,%edi
  call   <assert@plt>
  lea    -0x190(%rbp),%rdx
  mov    $0x0,%eax
  mov    $0x18,%ecx
  mov    %rdx,%rdi
  rep stos %rax,%es:(%rdi)
  lea    -0xd0(%rbp),%rdx
  mov    $0x0,%eax
  mov    $0x18,%ecx
  mov    %rdx,%rdi
  rep stos %rax,%es:(%rdi)
  movl   $0x0,-0x1a8(%rbp)
  jmp    L122
L101:
  movl   $0x0,-0x1a4(%rbp)
  jmp    L33
L63:
  movl   $0x0,-0x1a0(%rbp)
  jmp    L81
L41:
  mov    -0x1a4(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x1a8(%rbp),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  add    %rax,%rax
  add    %rdx,%rax
  add    %rax,%rax
  add    %rcx,%rax
  movsd  -0xd0(%rbp,%rax,8),%xmm1
  mov    -0x1a0(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x1a8(%rbp),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  add    %rax,%rax
  add    %rdx,%rax
  add    %rax,%rax
  add    %rcx,%rax
  movsd  -0x190(%rbp,%rax,8),%xmm2
  mov    -0x1a0(%rbp),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  add    %rax,%rax
  add    %rdx,%rax
  shl    $0x4,%rax
  mov    %rax,%rdx
  mov    -0x1c8(%rbp),%rax
  add    %rax,%rdx
  mov    -0x1a4(%rbp),%eax
  cltq
  movsd  (%rdx,%rax,8),%xmm0
  mulsd  %xmm2,%xmm0
  addsd  %xmm1,%xmm0
  mov    -0x1a4(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x1a8(%rbp),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  add    %rax,%rax
  add    %rdx,%rax
  add    %rax,%rax
  add    %rcx,%rax
  movsd  %xmm0,-0xd0(%rbp,%rax,8)
  addl   $0x1,-0x1a0(%rbp)
L81:
  cmpl   $0x5,-0x1a0(%rbp)
  jle    L41
  addl   $0x1,-0x1a4(%rbp)
L33:
  cmpl   $0x5,-0x1a4(%rbp)
  jle    L63
  addl   $0x1,-0x1a8(%rbp)
L122:
  cmpl   $0x3,-0x1a8(%rbp)
  jle    L101
  movl   $0x0,-0x19c(%rbp)
  jmp    L38
L4:
  movl   $0x0,-0x198(%rbp)
  jmp    L111
L0:
  movl   $0x0,-0x194(%rbp)
  jmp    L24
L120:
  mov    -0x19c(%rbp),%eax
  cltq
  shl    $0x5,%rax
  mov    %rax,%rdx
  mov    -0x1d0(%rbp),%rax
  add    %rax,%rdx
  mov    -0x198(%rbp),%eax
  cltq
  movsd  (%rdx,%rax,8),%xmm1
  mov    -0x194(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x19c(%rbp),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  add    %rax,%rax
  add    %rdx,%rax
  add    %rax,%rax
  add    %rcx,%rax
  movsd  -0xd0(%rbp,%rax,8),%xmm2
  mov    -0x194(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x198(%rbp),%eax
  movslq %eax,%rdx
  mov    %rdx,%rax
  add    %rax,%rax
  add    %rdx,%rax
  add    %rax,%rax
  add    %rcx,%rax
  movsd  -0x190(%rbp,%rax,8),%xmm0
  mulsd  %xmm2,%xmm0
  mov    -0x19c(%rbp),%eax
  cltq
  shl    $0x5,%rax
  mov    %rax,%rdx
  mov    -0x1d0(%rbp),%rax
  add    %rax,%rdx
  addsd  %xmm1,%xmm0
  mov    -0x198(%rbp),%eax
  cltq
  movsd  %xmm0,(%rdx,%rax,8)
  addl   $0x1,-0x194(%rbp)
L24:
  cmpl   $0x5,-0x194(%rbp)
  jle    L120
  addl   $0x1,-0x198(%rbp)
L111:
  cmpl   $0x3,-0x198(%rbp)
  jle    L0
  addl   $0x1,-0x19c(%rbp)
L38:
  cmpl   $0x3,-0x19c(%rbp)
  jle    L4
  nop
  mov    -0x8(%rbp),%rax
  sub    %fs:0x28,%rax
  je     L10
  call   <__stack_chk_fail@plt>
L10:
  leave
  ret
```

assistant: ```c
void rpy_to_T44_cov(const double rpy_xyz[6], double T44[4][4], const double cov_rpy[6][6], double cov_T44[4][4]) {
  assert(0);
  double J[4][6] = {0};
  double tmp[4][6] = {0};
  for (int i = 0; i < 4; i++) {
    for (int j = 0; j < 6; j++) {
      for (int k = 0; k < 6; k++) {
        tmp[i][j] += J[i][k] * cov_rpy[k][j];
      }
    }
  }
  for (int i = 0; i < 4; i++) {
    for (int j = 0; j < 4; j++) {
      for (int k = 0; k < 6; k++) {
        cov_T44[i][j] += tmp[i][k] * J[j][k];
      }
    }
  }
}
```