user: 请将以下的汇编代码转换成C语言代码：

```asm
<sinft>:
  endbr64
  push   %rbp
  pxor   %xmm0,%xmm0
  mov    %rdi,%rbp
  push   %rbx
  cvtsi2sd %esi,%xmm0
  mov    %esi,%ebx
  sub    $0x18,%rsp
  movsd  D44(%rip),%xmm1
  divsd  %xmm0,%xmm1
  movapd %xmm1,%xmm0
  movsd  %xmm1,0x8(%rsp)
  mulsd  D18(%rip),%xmm0
  call   <sin@plt>
  movsd  D30(%rip),%xmm4
  movsd  0x8(%rsp),%xmm1
  mulsd  %xmm0,%xmm4
  mulsd  %xmm0,%xmm4
  movapd %xmm1,%xmm0
  movsd  %xmm4,(%rsp)
  call   <sin@plt>
  mov    %ebx,%ecx
  movsd  (%rsp),%xmm4
  movslq %ebx,%rsi
  sar    %ecx
  movl   $0x0,0x4(%rbp)
  movss  D39(%rip),%xmm6
  test   %ecx,%ecx
  jle    L21
  movslq %ebx,%rsi
  movapd %xmm0,%xmm5
  lea    0x8(%rbp),%rax
  sub    $0x1,%ecx
  lea    0x0(%rbp,%rsi,4),%rdx
  lea    0xc(%rbp,%rcx,4),%rcx
  pxor   %xmm2,%xmm2
  movsd  D25(%rip),%xmm3
  movss  D39(%rip),%xmm6
  nopl   (%rax)
L35:
  movapd %xmm4,%xmm0
  movapd %xmm5,%xmm1
  movss  (%rdx),%xmm7
  add    $0x4,%rax
  mulsd  %xmm2,%xmm1
  sub    $0x4,%rdx
  mulsd  %xmm3,%xmm0
  subsd  %xmm1,%xmm0
  movapd %xmm3,%xmm1
  mulsd  %xmm5,%xmm1
  addsd  %xmm0,%xmm3
  movapd %xmm4,%xmm0
  mulsd  %xmm2,%xmm0
  addsd  %xmm1,%xmm0
  movss  -0x4(%rax),%xmm1
  addsd  %xmm0,%xmm2
  movaps %xmm1,%xmm0
  subss  %xmm7,%xmm1
  addss  %xmm7,%xmm0
  mulss  %xmm6,%xmm1
  cvtss2sd %xmm0,%xmm0
  mulsd  %xmm2,%xmm0
  cvtsd2ss %xmm0,%xmm0
  movaps %xmm0,%xmm7
  subss  %xmm1,%xmm0
  addss  %xmm1,%xmm7
  movss  %xmm7,-0x4(%rax)
  movss  %xmm0,0x4(%rdx)
  cmp    %rax,%rcx
  jne    L35
L21:
  mov    $0x1,%edx
  mov    %rbp,%rdi
  movss  %xmm6,(%rsp)
  call   <realft@plt>
  movss  (%rsp),%xmm6
  mulss  0x4(%rbp),%xmm6
  movl   $0x0,0x8(%rbp)
  movss  %xmm6,0x4(%rbp)
  cmp    $0x1,%ebx
  jle    L15
  sub    $0x2,%ebx
  lea    0x4(%rbp),%rax
  pxor   %xmm0,%xmm0
  shr    %ebx
  lea    0xc(%rbp,%rbx,8),%rdx
  nopl   (%rax)
L38:
  addss  (%rax),%xmm0
  movss  0x4(%rax),%xmm1
  add    $0x8,%rax
  movss  %xmm1,-0x8(%rax)
  movss  %xmm0,-0x4(%rax)
  cmp    %rdx,%rax
  jne    L38
L15:
  add    $0x18,%rsp
  pop    %rbx
  pop    %rbp
  ret
```

tool_calls: name: disassemble_data
arguments: label: D44
type: f64
name: disassemble_data
arguments: label: D18
type: f64
name: disassemble_data
arguments: label: D30
type: f32[2]
name: disassemble_data
arguments: label: D39
type: byte[4]
name: disassemble_data
arguments: label: D25
type: f64

tool: D44: 3.14159265358979

tool: D18: 0.5

tool: {"D30": [0.0,-2.0]}

tool: {"D39": [0x00,0x00,0x00,0x3f]}

tool: D25: 1

assistant: ```c
void sinft(float y[], int n) {
  void realft(float data[], unsigned long n, int isign);
  int j, n2 = n + 2;
  float sum, y1, y2;
  double theta, wi = 0.0, wr = 1.0, wpi, wpr, wtemp;
  theta = 3.14159265358979 / (double)n;
  wtemp = sin(0.5 * theta);
  wpr = -2.0 * wtemp * wtemp;
  wpi = sin(theta);
  y[1] = 0.0;
  for (j = 2; j <= (n >> 1) + 1; j++) {
    wr = (wtemp = wr) * wpr - wi * wpi + wr;
    wi = wi * wpr + wtemp * wpi + wi;
    y1 = wi * (y[j] + y[n2 - j]);
    y2 = 0.5 * (y[j] - y[n2 - j]);
    y[j] = y1 + y2;
    y[n2 - j] = y1 - y2;
  }
  realft(y, n, 1);
  y[1] *= 0.5;
  sum = y[2] = 0.0;
  for (j = 1; j <= n - 1; j += 2) {
    sum += y[j];
    y[j] = y[j + 1];
    y[j + 1] = sum;
  }
}
```