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

```asm
<ex3>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %rdi,%rbp
  mov    %esi,%r15d
  mov    %edx,%ebx
  mov    %fs:0x28,%rax
  mov    %rax,0x18(%rsp)
  xor    %eax,%eax
  mov    $0x0,%edi
  call   <time@plt>
  mov    %eax,%edi
  call   <srand@plt>
  mov    %rbp,0x10(%rsp)
  mov    $0x0,%eax
  call   <rand@plt>
  cltd
  idiv   %r15d
  movl   $0x1,0x4(%rsp)
  cmp    $0x1,%r15d
  jle    L156
  mov    %edx,%r13d
  mov    $0x0,%r14d
  mov    $0x1,%eax
  jmp    L170
L125:
  lea    0x4(%rsp),%rdi
  mov    $0x4,%esi
  call   <flipBit@plt>
  mov    0x4(%rsp),%eax
  lea    -0x2(%rax,%rax,1),%eax
  mov    %eax,0x8(%rsp)
  sub    %r14d,%eax
  mov    %eax,0xc(%rsp)
  mov    $0x0,%ebp
L132:
  movslq 0xc(%rsp),%rdx
  pxor   %xmm0,%xmm0
  cvtsi2sdl 0x4(%rsp),%xmm0
  mov    0x10(%rsp),%rax
  movsd  %xmm0,(%rax,%rdx,8)
  mov    0x8(%rsp),%r14d
  movslq 0xc(%rsp),%rax
  shl    $0x3,%rax
  add    %rax,0x10(%rsp)
  cmp    $0x4,%ebx
  jne    L91
  cmp    %r13d,0x4(%rsp)
  je     L90
L172:
  test   %bpl,%bpl
  jne    L144
L165:
  cmp    $0x4,%ebx
  je     L81
  test   %ebx,%ebx
  jne    L49
  lea    0x10(%rsp),%rsi
  lea    D19(%rip),%rdi
  call   <writeValue@plt>
L49:
  mov    0x4(%rsp),%eax
  add    $0x1,%eax
  mov    %eax,0x4(%rsp)
  cmp    %r15d,%eax
  jge    L156
L170:
  cmp    $0x1,%ebx
  jne    L203
  cmp    %eax,%r13d
  je     L125
L203:
  mov    0x4(%rsp),%eax
  lea    -0x2(%rax,%rax,1),%edx
  mov    %edx,0x8(%rsp)
  cmp    $0x2,%ebx
  sete   %bpl
  cmp    %r13d,%eax
  sete   %r12b
  and    %bpl,%r12b
  jne    L194
  mov    0x8(%rsp),%eax
  sub    %r14d,%eax
  mov    %eax,0xc(%rsp)
  cmp    $0x3,%ebx
  jne    L132
  cmp    %r13d,0x4(%rsp)
  je     L218
L200:
  movslq 0xc(%rsp),%rdx
  pxor   %xmm0,%xmm0
  cvtsi2sdl 0x4(%rsp),%xmm0
  mov    0x10(%rsp),%rax
  movsd  %xmm0,(%rax,%rdx,8)
  mov    0x8(%rsp),%r14d
  movslq 0xc(%rsp),%rax
  shl    $0x3,%rax
  add    %rax,0x10(%rsp)
L103:
  test   %bpl,%bpl
  jne    L144
  cmp    $0x3,%ebx
  jne    L165
  lea    0x10(%rsp),%rsi
  lea    D26(%rip),%rdi
  call   <writeValue@plt>
  jmp    L49
L194:
  lea    0x8(%rsp),%rdi
  mov    $0x4,%esi
  call   <flipBit@plt>
  mov    0x8(%rsp),%eax
  sub    %r14d,%eax
  mov    %eax,0xc(%rsp)
  cltq
  pxor   %xmm0,%xmm0
  cvtsi2sdl 0x4(%rsp),%xmm0
  mov    0x10(%rsp),%rdx
  movsd  %xmm0,(%rdx,%rax,8)
  mov    0x8(%rsp),%r14d
  movslq 0xc(%rsp),%rax
  shl    $0x3,%rax
  add    %rax,0x10(%rsp)
  mov    %r12d,%ebp
L91:
  cmp    $0x1,%ebx
  jne    L103
  lea    0x10(%rsp),%rsi
  lea    D47(%rip),%rdi
  call   <writeValue@plt>
  jmp    L165
L218:
  lea    0xc(%rsp),%rdi
  mov    $0x4,%esi
  call   <flipBit@plt>
  jmp    L200
L90:
  lea    0x10(%rsp),%rdi
  mov    $0x8,%esi
  call   <flipBit@plt>
  jmp    L172
L144:
  lea    0x10(%rsp),%rsi
  lea    D11(%rip),%rdi
  call   <writeValue@plt>
  jmp    L165
L81:
  lea    0x10(%rsp),%rsi
  lea    D33(%rip),%rdi
  call   <writeValue@plt>
  jmp    L49
L156:
  mov    0x18(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L128
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L128:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: retrieve_data
arguments: label: D19
datatype: string
name: retrieve_data
arguments: label: D26
datatype: string
name: retrieve_data
arguments: label: D47
datatype: string
name: retrieve_data
arguments: label: D11
datatype: string
name: retrieve_data
arguments: label: D33
datatype: string

tool: D19: ex3_var_addr.csv

tool: D26: ex3_var_addr_fi_3.csv

tool: D47: ex3_var_addr_fi_1.csv

tool: D11: ex3_var_addr_fi_2.csv

tool: D33: ex3_var_addr_fi_4.csv

assistant: ```c
void ex3(double *A, int n, int ch) {
  srand(time(NULL));
  double *addr = A;
  int pid = 0;
  int tidx = 1 + (rand() % n - 1);
  for (int i = 1; i < n; i++) {
    if (ch == 1 && tidx == i) {
      flipBit((void *)&i, 4);
    }
    int id = 2 * i - 2;
    if (ch == 2 && tidx == i) {
      flipBit((void *)&id, 4);
    }
    int rid = id - pid;
    if (ch == 3 && tidx == i) {
      flipBit((void *)&rid, 4);
    }
    addr[rid] = i;
    pid = id;
    addr = &addr[rid];
    if (ch == 4 && tidx == i) {
      flipBit((void *)&addr, 8);
    }
    if (ch == 1)
      writeValue("ex3_var_addr_fi_1.csv", (void *)&addr);
    if (ch == 2)
      writeValue("ex3_var_addr_fi_2.csv", (void *)&addr);
    if (ch == 3)
      writeValue("ex3_var_addr_fi_3.csv", (void *)&addr);
    if (ch == 4)
      writeValue("ex3_var_addr_fi_4.csv", (void *)&addr);
    if (ch == 0)
      writeValue("ex3_var_addr.csv", (void *)&addr);
  }
}
```