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

```asm
<df2>:
  endbr64
  push   %r14
  movq   %xmm0,%r14
  push   %r13
  mov    %esi,%r13d
  push   %r12
  mov    %edi,%r12d
  push   %rbp
  mov    %rcx,%rbp
  push   %rbx
  mov    %rdx,%rbx
  sub    $0x70,%rsp
  movsd  %xmm2,0x20(%rsp)
  movsd  %xmm3,0x8(%rsp)
  movsd  %xmm1,(%rsp)
  movsd  %xmm4,0x28(%rsp)
  movsd  %xmm5,0x10(%rsp)
  mov    %fs:0x28,%rax
  mov    %rax,0x68(%rsp)
  xor    %eax,%eax
  mov    D57(%rip),%rax
  movq   %rax,%xmm0
  call   <atan@plt>
  pxor   %xmm0,%xmm0
  movsd  0x10(%rsp),%xmm5
  shl    $0x2,%eax
  cvtsi2sd %eax,%xmm0
  divsd  (%rsp),%xmm0
  movapd %xmm0,%xmm1
  xorpd  D16(%rip),%xmm1
  movsd  %xmm0,0x18(%rsp)
  mulsd  %xmm1,%xmm5
  movsd  %xmm1,(%rsp)
  movapd %xmm5,%xmm0
  call   <exp@plt>
  mov    D57(%rip),%rax
  pxor   %xmm2,%xmm2
  test   %r13d,%r13d
  movsd  (%rsp),%xmm1
  movapd %xmm2,%xmm3
  mov    %rax,0x30(%rsp)
  jne    L10
L32:
  movsd  0x8(%rsp),%xmm0
  movsd  %xmm2,0x38(%rsp)
  movsd  %xmm3,0x40(%rsp)
  mulsd  %xmm1,%xmm0
  call   <exp@plt>
  mov    D57(%rip),%rax
  pxor   %xmm1,%xmm1
  movapd %xmm1,%xmm2
  mov    %rax,0x50(%rsp)
  test   %r12d,%r12d
  jne    L5
L20:
  lea    0x30(%rsp),%rdx
  lea    0x50(%rsp),%rdi
  mov    %rbp,%r9
  mov    %rbx,%r8
  mov    $0x2,%ecx
  mov    $0x2,%esi
  movq   %r14,%xmm0
  movsd  %xmm1,0x58(%rsp)
  movsd  %xmm2,0x60(%rsp)
  call   <dfs@plt>
  mov    0x68(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L27
  add    $0x70,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
  nopl   0x0(%rax)
L10:
  movsd  0x18(%rsp),%xmm7
  movsd  %xmm0,0x10(%rsp)
  movapd %xmm7,%xmm2
  addsd  %xmm7,%xmm2
  mulsd  0x28(%rsp),%xmm2
  cvttsd2si %xmm2,%edi
  call   <cos@plt>
  movsd  0x10(%rsp),%xmm0
  pxor   %xmm3,%xmm3
  movsd  D49(%rip),%xmm2
  cvtsi2sd %eax,%xmm3
  movsd  (%rsp),%xmm1
  mulsd  %xmm0,%xmm2
  mulsd  %xmm3,%xmm2
  movapd %xmm0,%xmm3
  mulsd  %xmm0,%xmm3
  jmp    L32
  nopl   0x0(%rax,%rax,1)
L5:
  movsd  0x18(%rsp),%xmm1
  movsd  %xmm0,(%rsp)
  addsd  %xmm1,%xmm1
  mulsd  0x20(%rsp),%xmm1
  cvttsd2si %xmm1,%edi
  call   <cos@plt>
  movsd  (%rsp),%xmm0
  pxor   %xmm2,%xmm2
  movsd  D49(%rip),%xmm1
  cvtsi2sd %eax,%xmm2
  mulsd  %xmm0,%xmm1
  mulsd  %xmm2,%xmm1
  movapd %xmm0,%xmm2
  mulsd  %xmm0,%xmm2
  jmp    L20
L27:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: retrieve_data
arguments: data_tag: D57
type: f64
name: retrieve_data
arguments: data_tag: D16
type: byte[16]
name: retrieve_data
arguments: data_tag: D49
type: byte[8]

tool: D57: 1

tool: {"D16": [0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00]}

tool: {"D49": [0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xc0]}

assistant: ```c
double df2(const double x, const double sf, const double f0p, const double wbp, const double f0z, const double wbz, const int fp, const int fz, double *buf, int *bufp) {
  double a[3], b[3];
  double p, e;
  p = 4 * atan(1.0) / sf;
  e = exp(-p * wbz);
  a[0] = 1.0;
  if (fz) {
    a[1] = -2 * e * cos(2 * p * f0z);
    a[2] = e * e;
  } else {
    a[1] = 0;
    a[2] = 0;
  }
  e = exp(-p * wbp);
  b[0] = 1.0;
  if (fp) {
    b[1] = -2 * e * cos(2 * p * f0p);
    b[2] = e * e;
  } else {
    b[1] = 0;
    b[2] = 0;
  }
  return (dfs(x, b, 2, a, 2, buf, bufp));
}
```