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

```asm
<rdfreverserxn>:
  endbr64
  push   %r14
  movapd %xmm0,%xmm6
  push   %r13
  push   %r12
  mov    %rdi,%r12
  push   %rbp
  mov    %edx,%ebp
  push   %rbx
  mov    %rsi,%rbx
  sub    $0x40,%rsp
  movsd  D8(%rip),%xmm3
  movsd  %xmm0,0x30(%rsp)
  mulsd  D79(%rip),%xmm0
  mulsd  %xmm6,%xmm0
  mulsd  %xmm6,%xmm0
  divsd  %xmm0,%xmm3
  pxor   %xmm0,%xmm0
  ucomisd %xmm0,%xmm1
  jp     L84
  jne    L84
  test   %edx,%edx
  jle    L69
  mulsd  %xmm2,%xmm3
  movq   D72(%rip),%xmm7
  lea    -0x1(%rdx),%eax
  lea    (%rdi,%rax,8),%rbp
  movaps %xmm7,(%rsp)
  movsd  D59(%rip),%xmm7
  movsd  %xmm7,0x18(%rsp)
  addsd  %xmm3,%xmm3
  movsd  %xmm3,0x20(%rsp)
  nopl   (%rax)
L22:
  movapd (%rsp),%xmm6
  movsd  (%r12),%xmm1
  add    $0x8,%rbx
  divsd  0x30(%rsp),%xmm1
  xorpd  %xmm1,%xmm6
  movapd %xmm6,%xmm0
  mulsd  %xmm1,%xmm0
  mulsd  0x18(%rsp),%xmm0
  call   <exp@plt>
  mulsd  0x20(%rsp),%xmm0
  mov    %r12,%rax
  add    $0x8,%r12
  addsd  -0x8(%rbx),%xmm0
  movsd  %xmm0,-0x8(%rbx)
  cmp    %rbp,%rax
  jne    L22
L69:
  add    $0x40,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
  nopl   (%rax)
L84:
  ucomisd (%r12),%xmm0
  divsd  0x30(%rsp),%xmm1
  movsd  %xmm1,0x20(%rsp)
  jp     L56
  je     L20
L56:
  xor    %eax,%eax
L8:
  cmp    %eax,%ebp
  jle    L69
  mulsd  %xmm2,%xmm3
  movq   D72(%rip),%xmm7
  sub    $0x1,%ebp
  movslq %eax,%rdx
  sub    %eax,%ebp
  lea    0x0(,%rdx,8),%rcx
  movaps %xmm7,(%rsp)
  add    %rdx,%rbp
  lea    (%r12,%rcx,1),%r13
  add    %rcx,%rbx
  movsd  D59(%rip),%xmm7
  lea    0x8(%r12,%rbp,8),%rbp
  movq   %xmm3,%r14
  movsd  %xmm7,0x18(%rsp)
  nopw   0x0(%rax,%rax,1)
L36:
  movsd  0x0(%r13),%xmm0
  divsd  0x30(%rsp),%xmm0
  movapd %xmm0,%xmm1
  add    $0x8,%r13
  subsd  0x20(%rsp),%xmm1
  movapd (%rsp),%xmm4
  movsd  %xmm0,0x28(%rsp)
  add    $0x8,%rbx
  xorpd  %xmm1,%xmm4
  movapd %xmm4,%xmm0
  mulsd  %xmm1,%xmm0
  mulsd  0x18(%rsp),%xmm0
  call   <exp@plt>
  movsd  0x20(%rsp),%xmm5
  movapd (%rsp),%xmm4
  addsd  0x28(%rsp),%xmm5
  movsd  %xmm0,0x38(%rsp)
  movapd %xmm5,%xmm1
  xorpd  %xmm1,%xmm4
  movapd %xmm4,%xmm0
  mulsd  %xmm5,%xmm0
  mulsd  0x18(%rsp),%xmm0
  call   <exp@plt>
  movsd  0x38(%rsp),%xmm2
  movq   %r14,%xmm1
  divsd  0x28(%rsp),%xmm1
  divsd  0x20(%rsp),%xmm1
  subsd  %xmm0,%xmm2
  mulsd  %xmm2,%xmm1
  addsd  -0x8(%rbx),%xmm1
  movsd  %xmm1,-0x8(%rbx)
  cmp    %rbp,%r13
  jne    L36
  add    $0x40,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  ret
  nopl   0x0(%rax)
L20:
  movapd %xmm1,%xmm0
  xorpd  D72(%rip),%xmm0
  movsd  %xmm2,0x18(%rsp)
  movsd  D59(%rip),%xmm7
  movsd  %xmm3,(%rsp)
  mulsd  %xmm1,%xmm0
  mulsd  %xmm7,%xmm0
  call   <exp@plt>
  movsd  (%rsp),%xmm3
  movsd  0x18(%rsp),%xmm2
  mov    $0x1,%eax
  movapd %xmm0,%xmm1
  movapd %xmm3,%xmm0
  mulsd  %xmm2,%xmm0
  addsd  %xmm0,%xmm0
  mulsd  %xmm1,%xmm0
  addsd  (%rbx),%xmm0
  movsd  %xmm0,(%rbx)
  jmp    L8
```

tool_calls: name: unpack_data
arguments: data_tag: D8
type: f64
name: unpack_data
arguments: data_tag: D79
type: byte[8]
name: unpack_data
arguments: data_tag: D72
type: byte[16]
name: unpack_data
arguments: data_tag: D59
type: byte[8]

tool: D8: 1

tool: {"D79": [0xaf,0xac,0xf2,0xdf,0xcc,0x7f,0x3f,0x40]}

tool: {"D72": [0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00]}

tool: {"D59": [0x00,0x00,0x00,0x00,0x00,0x00,0xe0,0x3f]}

assistant: ```c
void rdfreverserxn(double *r, double *rdf, int n, double step, double b, double flux) {
  int i;
  double rr, k;
  k = 1.0 / (4.0 * 3.14159265358979323846 * 2.50662827462 * step * step * step);
  if (b == 0) {
    for (i = 0; i < n; i++) {
      rr = r[i] / step;
      rdf[i] += flux * k * 2.0 * exp(-rr * rr / 2.0);
    }
  } else {
    b /= step;
    if (r[i = 0] == 0)
      rdf[i++] += flux * k * 2.0 * exp(-b * b / 2.0);
    for (; i < n; i++) {
      rr = r[i] / step;
      rdf[i] += flux * k / rr / b * (exp(-(rr - b) * (rr - b) / 2.0) - exp(-(rr + b) * (rr + b) / 2.0));
    }
  }
  return;
}
```