user: 下面的汇编指令对应的C源代码是什么：

```asm
<kbfft>:
  endbr64
  push   %r15
  mov    %edx,%r15d
  push   %r14
  push   %r13
  push   %r12
  mov    %r9,%r12
  push   %rbp
  mov    %r8,%rbp
  push   %rbx
  mov    %rcx,%rbx
  sub    $0x28,%rsp
  mov    %edi,0x1c(%rsp)
  mov    0x60(%rsp),%r13
  mov    %esi,0x18(%rsp)
  test   %esi,%esi
  jle    L162
  mov    %r9,%r8
  mov    %esi,%r10d
  mov    %r13,%rdi
  xor    %r9d,%r9d
  nopl   0x0(%rax,%rax,1)
L32:
  mov    %r9d,%esi
  xor    %ecx,%ecx
  xor    %edx,%edx
  test   %r15d,%r15d
  jle    L172
  nopl   0x0(%rax)
L160:
  mov    %esi,%eax
  add    $0x1,%ecx
  sar    %esi
  and    $0x1,%eax
  lea    (%rax,%rdx,2),%edx
  movslq %edx,%rax
  movss  (%rbx,%rax,4),%xmm0
  movss  %xmm0,(%r8)
  movss  0x0(%rbp,%rax,4),%xmm0
  movss  %xmm0,(%rdi)
  cmp    %ecx,%r15d
  jne    L160
L172:
  add    $0x1,%r9d
  add    $0x4,%r8
  add    $0x4,%rdi
  cmp    %r9d,%r10d
  jne    L32
L162:
  pxor   %xmm3,%xmm3
  movsd  D13(%rip),%xmm1
  movl   $0x3f800000,(%rbx)
  cvtsi2sdl 0x18(%rsp),%xmm3
  movl   $0x0,0x0(%rbp)
  divsd  %xmm3,%xmm1
  movsd  %xmm3,0x8(%rsp)
  cvtsd2ss %xmm1,%xmm1
  movaps %xmm1,%xmm0
  movss  %xmm1,0x4(%rsp)
  call   <cos@plt>
  movss  0x4(%rsp),%xmm1
  movss  %xmm0,0x4(%rbx)
  movaps %xmm1,%xmm0
  call   <sin@plt>
  mov    0x1c(%rsp),%edx
  movsd  0x8(%rsp),%xmm3
  movaps %xmm0,%xmm1
  test   %edx,%edx
  jne    L21
  xorps  D8(%rip),%xmm1
L21:
  mov    0x18(%rsp),%eax
  movss  %xmm1,0x4(%rbp)
  lea    -0x1(%rax),%edx
  cmp    $0x2,%eax
  jle    L78
  lea    -0x3(%rax),%ecx
  xor    %eax,%eax
  shl    $0x2,%rcx
  jmp    L100
L49:
  movss  0x4(%rbp),%xmm1
  add    $0x4,%rax
L100:
  movss  0x4(%rbp,%rax,1),%xmm6
  movss  0x4(%rbx),%xmm2
  movss  0x4(%rbx,%rax,1),%xmm0
  movaps %xmm6,%xmm4
  mulss  %xmm1,%xmm4
  movaps %xmm0,%xmm5
  addss  %xmm2,%xmm1
  addss  %xmm6,%xmm0
  mulss  %xmm2,%xmm5
  mulss  %xmm1,%xmm0
  movaps %xmm5,%xmm7
  subss  %xmm4,%xmm7
  subss  %xmm5,%xmm0
  movss  %xmm7,0x8(%rbx,%rax,1)
  subss  %xmm4,%xmm0
  movss  %xmm0,0x8(%rbp,%rax,1)
  cmp    %rax,%rcx
  jne    L49
L84:
  xor    %eax,%eax
  cs nopw 0x0(%rax,%rax,1)
L177:
  movss  (%r12,%rax,4),%xmm1
  movss  0x4(%r12,%rax,4),%xmm2
  movss  0x0(%r13,%rax,4),%xmm0
  addss  %xmm1,%xmm2
  movss  %xmm2,(%r12,%rax,4)
  movss  0x4(%r13,%rax,4),%xmm2
  addss  %xmm0,%xmm2
  movss  %xmm2,0x0(%r13,%rax,4)
  subss  0x4(%r12,%rax,4),%xmm1
  movss  %xmm1,0x4(%r12,%rax,4)
  subss  0x4(%r13,%rax,4),%xmm0
  movss  %xmm0,0x4(%r13,%rax,4)
  add    $0x2,%rax
  cmp    %eax,%edx
  jg     L177
L97:
  mov    0x18(%rsp),%edi
  mov    $0x2,%r14d
  mov    %edi,%eax
  shr    $0x1f,%eax
  add    %edi,%eax
  sar    %eax
  sub    $0x2,%r15d
  mov    %eax,0x8(%rsp)
  lea    0x4(%r12),%rax
  mov    %rax,0x10(%rsp)
  mov    %r15d,0x4(%rsp)
  js     L79
  nopl   0x0(%rax)
L134:
  mov    0x8(%rsp),%edi
  movslq %r14d,%rsi
  add    %r14d,%r14d
  mov    %edi,%eax
  shr    $0x1f,%eax
  add    %edi,%eax
  sar    %eax
  lea    -0x1(%rax),%r15d
  mov    %eax,0x8(%rsp)
  imul   %r14d,%r15d
  test   %r15d,%r15d
  js     L22
  mov    0x10(%rsp),%rdi
  movslq 0x8(%rsp),%r8
  movslq %r14d,%r11
  lea    -0x1(%rsi),%eax
  shl    $0x2,%r11
  xor    %r9d,%r9d
  xor    %r10d,%r10d
  lea    (%rdi,%rax,4),%rdi
  shl    $0x2,%r8
  nopw   0x0(%rax,%rax,1)
L65:
  lea    (%r12,%r9,1),%rax
  lea    0x0(%r13,%r9,1),%rdx
  xor    %ecx,%ecx
  nopl   0x0(%rax,%rax,1)
L4:
  movss  (%rbx,%rcx,1),%xmm0
  movss  0x0(%rbp,%rcx,1),%xmm2
  add    %r8,%rcx
  movss  (%rax,%rsi,4),%xmm1
  movss  (%rdx,%rsi,4),%xmm6
  movaps %xmm0,%xmm5
  movaps %xmm2,%xmm4
  addss  %xmm2,%xmm0
  mulss  %xmm1,%xmm5
  addss  %xmm6,%xmm1
  mulss  %xmm6,%xmm4
  mulss  %xmm1,%xmm0
  movss  (%rax),%xmm1
  movaps %xmm5,%xmm2
  subss  %xmm4,%xmm2
  subss  %xmm5,%xmm0
  subss  %xmm2,%xmm1
  subss  %xmm4,%xmm0
  movss  %xmm1,(%rax,%rsi,4)
  movss  (%rdx),%xmm1
  add    $0x4,%rax
  subss  %xmm0,%xmm1
  movss  %xmm1,(%rdx,%rsi,4)
  addss  -0x4(%rax),%xmm2
  add    $0x4,%rdx
  movss  %xmm2,-0x4(%rax)
  addss  -0x4(%rdx),%xmm0
  movss  %xmm0,-0x4(%rdx)
  cmp    %rax,%rdi
  jne    L4
  add    %r14d,%r10d
  add    %r11,%rdi
  add    %r11,%r9
  cmp    %r15d,%r10d
  jle    L65
L22:
  subl   $0x1,0x4(%rsp)
  mov    0x4(%rsp),%eax
  cmp    $0xffffffff,%eax
  jne    L134
L79:
  mov    0x1c(%rsp),%eax
  test   %eax,%eax
  je     L63
  mov    0x18(%rsp),%eax
  test   %eax,%eax
  jle    L63
  movslq %eax,%rdx
  xor    %eax,%eax
L169:
  pxor   %xmm0,%xmm0
  cvtss2sd (%r12,%rax,4),%xmm0
  divsd  %xmm3,%xmm0
  cvtsd2ss %xmm0,%xmm0
  movss  %xmm0,(%r12,%rax,4)
  pxor   %xmm0,%xmm0
  cvtss2sd 0x0(%r13,%rax,4),%xmm0
  divsd  %xmm3,%xmm0
  cvtsd2ss %xmm0,%xmm0
  movss  %xmm0,0x0(%r13,%rax,4)
  add    $0x1,%rax
  cmp    %rax,%rdx
  jne    L169
L63:
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L78:
  test   %edx,%edx
  jle    L97
  jmp    L84
```

tool_calls: name: disassemble_data
arguments: tag: D13
data_type: f64
name: disassemble_data
arguments: tag: D8
data_type: byte[16]

tool: D13: 6.283185306

tool: {"D8": [0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00]}

assistant: ```c
void kbfft(int l, int n, int k, float *pr, float *pi, float *fr, float *fi) {
  int it, m, is, i, j, nv, l0;
  float p, q, s, vr, vi, poddr, poddi;
  for (it = 0; it <= n - 1; it++) {
    m = it;
    is = 0;
    for (i = 0; i <= k - 1; i++) {
      j = m / 2;
      is = 2 * is + (m - 2 * j);
      m = j;
      fr[it] = pr[is];
      fi[it] = pi[is];
    }
  }
  pr[0] = 1.0;
  pi[0] = 0.0;
  p = 6.283185306 / (1.0 * n);
  pr[1] = cos(p);
  pi[1] = -sin(p);
  if (l != 0)
    pi[1] = -pi[1];
  for (i = 2; i <= n - 1; i++) {
    p = pr[i - 1] * pr[1];
    q = pi[i - 1] * pi[1];
    s = (pr[i - 1] + pi[i - 1]) * (pr[1] + pi[1]);
    pr[i] = p - q;
    pi[i] = s - p - q;
  }
  for (it = 0; it <= n - 2; it = it + 2) {
    vr = fr[it];
    vi = fi[it];
    fr[it] = vr + fr[it + 1];
    fi[it] = vi + fi[it + 1];
    fr[it + 1] = vr - fr[it + 1];
    fi[it + 1] = vi - fi[it + 1];
  }
  m = n / 2;
  nv = 2;
  for (l0 = k - 2; l0 >= 0; l0--) {
    m = m / 2;
    nv = 2 * nv;
    for (it = 0; it <= (m - 1) * nv; it = it + nv)
      for (j = 0; j <= (nv / 2) - 1; j++) {
        p = pr[m * j] * fr[it + j + nv / 2];
        q = pi[m * j] * fi[it + j + nv / 2];
        s = pr[m * j] + pi[m * j];
        s = s * (fr[it + j + nv / 2] + fi[it + j + nv / 2]);
        poddr = p - q;
        poddi = s - p - q;
        fr[it + j + nv / 2] = fr[it + j] - poddr;
        fi[it + j + nv / 2] = fi[it + j] - poddi;
        fr[it + j] = fr[it + j] + poddr;
        fi[it + j] = fi[it + j] + poddi;
      }
  }
  if (l != 0)
    for (i = 0; i <= n - 1; i++) {
      fr[i] = fr[i] / (1.0 * n);
      fi[i] = fi[i] / (1.0 * n);
    }
  return;
}
```