user: What is the c source code of the assembly code below?

```asm
<rf5>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x1000,%rsp
  orq    $0x0,(%rsp)
  sub    $0x1000,%rsp
  orq    $0x0,(%rsp)
  sub    $0x58,%rsp
  mov    %rdi,0x20(%rsp)
  mov    %esi,0x3c(%rsp)
  mov    %rdx,0x28(%rsp)
  mov    %rcx,%r12
  mov    %fs:0x28,%rax
  mov    %rax,0x2048(%rsp)
  xor    %eax,%eax
  lea    (%rsi,%rsi,4),%edx
  test   %edx,%edx
  jle    L39
  mov    %rcx,%rax
  lea    -0x1(%rdx),%edx
  lea    0x8(%rcx,%rdx,8),%rdx
L70:
  movq   $0x0,(%rax)
  add    $0x8,%rax
  cmp    %rdx,%rax
  jne    L70
L39:
  mov    0x3c(%rsp),%eax
  test   %eax,%eax
  jle    L51
  mov    %eax,%eax
  mov    0x20(%rsp),%rdi
  lea    (%rdi,%rax,8),%rax
  mov    %rax,0x30(%rsp)
  movl   $0x1,0x38(%rsp)
  mov    $0xffffffff,%r15d
  mov    %r15d,%r13d
  mov    %r12,%rbx
  jmp    L105
L143:
  movslq %r14d,%r14
  movsd  0x1040(%rsp,%r14,8),%xmm0
  movslq %r15d,%rdx
  movsd  0x1040(%rsp,%rdx,8),%xmm2
  mov    %rbp,0x40(%rsp,%rdx,8)
  movslq %r13d,%r13
  movsd  0x1040(%rsp,%r13,8),%xmm3
  movsd  %xmm3,0x1040(%rsp,%rdx,8)
  mov    %r15d,%r13d
  test   %eax,%eax
  jle    L16
  movsd  %xmm1,(%rbx)
  movsd  0x8(%rsp),%xmm1
  addsd  0x18(%rsp),%xmm1
  mulsd  D51(%rip),%xmm1
  movsd  %xmm1,0x8(%rbx)
  movsd  D43(%rip),%xmm5
  movsd  %xmm5,0x10(%rbx)
  movsd  %xmm2,0x18(%rbx)
  subsd  %xmm2,%xmm0
  addsd  %xmm0,%xmm0
  movsd  %xmm0,0x20(%rbx)
  addl   $0x1,0x38(%rsp)
  lea    0x28(%rbx),%rbx
L16:
  cmp    $0x1,%r13d
  jle    L161
  lea    -0x1(%r13),%r14d
  movslq %r14d,%rax
  movsd  0x40(%rsp,%rax,8),%xmm6
  lea    -0x2(%r13),%r15d
  movslq %r15d,%rax
  movsd  0x40(%rsp,%rax,8),%xmm4
  movsd  %xmm4,0x18(%rsp)
  movsd  %xmm6,0x8(%rsp)
  movapd %xmm6,%xmm7
  subsd  %xmm4,%xmm7
  movapd %xmm7,%xmm0
  movsd  %xmm7,0x10(%rsp)
  call   <fabs@plt>
  mov    %eax,%r12d
  movslq %r13d,%rax
  mov    0x40(%rsp,%rax,8),%rbp
  movq   %rbp,%xmm0
  subsd  0x8(%rsp),%xmm0
  call   <fabs@plt>
  cmp    %eax,%r12d
  jg     L161
  movsd  0x10(%rsp),%xmm0
  mulsd  D51(%rip),%xmm0
  call   <fabs@plt>
  pxor   %xmm1,%xmm1
  cvtsi2sd %eax,%xmm1
  cmp    $0x2,%r13d
  jne    L143
  movsd  0x40(%rsp),%xmm2
  movsd  0x48(%rsp),%xmm3
  movsd  0x1048(%rsp),%xmm0
  movsd  0x1040(%rsp),%xmm4
  movsd  %xmm3,0x40(%rsp)
  movsd  0x50(%rsp),%xmm5
  movsd  %xmm5,0x48(%rsp)
  movsd  %xmm0,0x1040(%rsp)
  movsd  0x1050(%rsp),%xmm5
  movsd  %xmm5,0x1048(%rsp)
  mov    $0x1,%r13d
  test   %eax,%eax
  jle    L16
  movsd  %xmm1,(%rbx)
  addsd  %xmm3,%xmm2
  mulsd  D51(%rip),%xmm2
  movsd  %xmm2,0x8(%rbx)
  movsd  D51(%rip),%xmm5
  movsd  %xmm5,0x10(%rbx)
  movsd  %xmm4,0x18(%rbx)
  subsd  %xmm4,%xmm0
  addsd  %xmm0,%xmm0
  movsd  %xmm0,0x20(%rbx)
  lea    0x28(%rbx),%rbx
  jmp    L16
L161:
  mov    0x30(%rsp),%rdi
  cmp    %rdi,0x20(%rsp)
  je     L69
L105:
  addq   $0x8,0x20(%rsp)
  mov    0x20(%rsp),%rcx
  add    $0x1,%r13d
  movslq %r13d,%rax
  movsd  -0x8(%rcx),%xmm0
  movsd  %xmm0,0x40(%rsp,%rax,8)
  addq   $0x8,0x28(%rsp)
  mov    0x28(%rsp),%rsi
  movsd  -0x8(%rsi),%xmm0
  movsd  %xmm0,0x1040(%rsp,%rax,8)
  jmp    L16
L69:
  mov    %r13d,%r15d
  mov    %rbx,%r12
  test   %r13d,%r13d
  jle    L18
  lea    0x48(%rsp),%rbx
  lea    0x1048(%rsp),%r13
  lea    -0x1(%r15),%eax
  lea    0x50(%rsp,%rax,8),%r14
  mov    D51(%rip),%r15
  jmp    L42
L103:
  add    $0x8,%rbx
  add    $0x8,%r13
  cmp    %r14,%rbx
  je     L18
L42:
  mov    -0x8(%rbx),%rbp
  movsd  (%rbx),%xmm3
  movq   %rbp,%xmm0
  movsd  %xmm3,0x8(%rsp)
  subsd  %xmm3,%xmm0
  call   <fabs@plt>
  cmp    $0x1,%eax
  jle    L103
  movsd  0x0(%r13),%xmm1
  movsd  -0x8(%r13),%xmm2
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  pxor   %xmm0,%xmm0
  cvtsi2sd %eax,%xmm0
  movsd  %xmm0,(%r12)
  movq   %rbp,%xmm0
  addsd  0x8(%rsp),%xmm0
  movq   %r15,%xmm5
  mulsd  %xmm5,%xmm0
  movsd  %xmm0,0x8(%r12)
  mov    %r15,0x10(%r12)
  movsd  %xmm2,0x18(%r12)
  subsd  %xmm2,%xmm1
  movapd %xmm1,%xmm0
  addsd  %xmm1,%xmm0
  movsd  %xmm0,0x20(%r12)
  lea    0x28(%r12),%r12
  jmp    L103
L51:
  movl   $0x1,0x38(%rsp)
L18:
  mov    0x3c(%rsp),%eax
  sub    $0x1,%eax
  sub    0x38(%rsp),%eax
  mov    0x2048(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L30
  add    $0x2058,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L30:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: parse_data
arguments: data_label: D51
datatype: f64
name: parse_data
arguments: data_label: D43
datatype: f64

tool: D51: 0.5

tool: D43: 1

assistant: ```c
int rf5(double *array_ext, int nr, double *array_t, double *array_out) {
  double a[512], t[512], ampl, mean, period, atime;
  int index, j, cNr, tot_num;
  tot_num = nr;
  for (index = 0; index < nr * 5; index++) {
    array_out[index] = 0.0;
  }
  j = -1;
  cNr = 1;
  for (index = 0; index < tot_num; index++) {
    a[++j] = *array_ext++;
    t[j] = *array_t++;
    while ((j >= 2) && (fabs(a[j - 1] - a[j - 2]) <= fabs(a[j] - a[j - 1]))) {
      ampl = fabs((a[j - 1] - a[j - 2]) / 2);
      switch (j) {
      case 0: {
        break;
      }
      case 1: {
        break;
      }
      case 2: {
        mean = (a[0] + a[1]) / 2;
        period = (t[1] - t[0]) * 2;
        atime = t[0];
        a[0] = a[1];
        a[1] = a[2];
        t[0] = t[1];
        t[1] = t[2];
        j = 1;
        if (ampl > 0) {
          *array_out++ = ampl;
          *array_out++ = mean;
          *array_out++ = 0.50;
          *array_out++ = atime;
          *array_out++ = period;
        }
        break;
      }
      default: {
        mean = (a[j - 1] + a[j - 2]) / 2;
        period = (t[j - 1] - t[j - 2]) * 2;
        atime = t[j - 2];
        a[j - 2] = a[j];
        t[j - 2] = t[j];
        j = j - 2;
        if (ampl > 0) {
          *array_out++ = ampl;
          *array_out++ = mean;
          *array_out++ = 1.00;
          *array_out++ = atime;
          *array_out++ = period;
          cNr++;
        }
        break;
      }
      }
    }
  }
  for (index = 0; index < j; index++) {
    ampl = fabs(a[index] - a[index + 1]) / 2;
    mean = (a[index] + a[index + 1]) / 2;
    period = (t[index + 1] - t[index]) * 2;
    atime = t[index];
    if (ampl > 0) {
      *array_out++ = ampl;
      *array_out++ = mean;
      *array_out++ = 0.50;
      *array_out++ = atime;
      *array_out++ = period;
    }
  }
  return (tot_num - 1 - cNr);
}
```