user: Translate the below assembly code into C programming language:

```asm
<resfft>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x38,%rsp
  mov    %rdi,%rbx
  mov    %esi,%ebp
  mov    %edx,%r14d
  mov    %esi,%r15d
  shr    $0x1f,%r15d
  add    %esi,%r15d
  sar    %r15d
  cmp    $0x1,%esi
  jle    L63
  lea    0x4(%rdi),%rax
  lea    -0x2(%rsi),%edx
  shr    %edx
  mov    %edx,%edx
  lea    0xc(%rdi,%rdx,8),%rdx
  pxor   %xmm0,%xmm0
L16:
  addss  (%rax),%xmm0
  add    $0x8,%rax
  cmp    %rdx,%rax
  jne    L16
L43:
  addss  %xmm0,%xmm0
  movss  %xmm0,0x24(%rsp)
  movslq %ebp,%r13
  lea    0x0(,%rbp,4),%edi
  call   <malloc@plt>
  mov    %rax,0x8(%rsp)
  movss  (%rbx),%xmm0
  movss  %xmm0,(%rax)
  lea    (%rbx,%r13,4),%rsi
  mov    %rsi,0x10(%rsp)
  movslq %r15d,%rdi
  mov    %rdi,0x28(%rsp)
  lea    (%rax,%rdi,4),%rdi
  mov    %rdi,0x18(%rsp)
  movss  (%rsi),%xmm0
  movss  %xmm0,(%rdi)
  cmp    $0x3,%ebp
  jle    L37
  lea    0x4(%rax),%r12
  lea    (%rax,%r13,2),%rsi
  add    %rsi,%rsi
  mov    %r12,%rdx
  mov    $0x1,%eax
L56:
  movss  0x4(%rbx,%rax,8),%xmm0
  subss  -0x4(%rbx,%rax,8),%xmm0
  movaps %xmm0,%xmm1
  addss  (%rbx,%rax,8),%xmm1
  movss  %xmm1,(%rdx)
  mov    %rsi,%rcx
  sub    %rdx,%rcx
  movss  (%rbx,%rax,8),%xmm1
  subss  %xmm0,%xmm1
  movss  %xmm1,(%rcx)
  add    $0x1,%rax
  add    $0x4,%rdx
  cmp    %eax,%r15d
  jg     L56
  mov    %r14d,%edx
  mov    %ebp,%esi
  mov    0x8(%rsp),%r14
  mov    %r14,%rdi
  mov    $0x0,%eax
  call   <rsfft@plt>
  pxor   %xmm0,%xmm0
  cvtsi2sd %ebp,%xmm0
  movsd  D8(%rip),%xmm1
  divsd  %xmm0,%xmm1
  movsd  %xmm1,(%rsp)
  lea    -0x4(%r14,%r13,4),%rbp
  mov    %rbp,%r14
  mov    $0x1,%r13d
L10:
  pxor   %xmm0,%xmm0
  cvtsi2sd %r13d,%xmm0
  mulsd  (%rsp),%xmm0
  call   <sin@plt>
  add    %eax,%eax
  pxor   %xmm1,%xmm1
  cvtsi2ss %eax,%xmm1
  movss  (%r14),%xmm0
  divss  %xmm1,%xmm0
  movss  %xmm0,(%r14)
  add    $0x1,%r13d
  sub    $0x4,%r14
  cmp    %r13d,%r15d
  jg     L10
  mov    0x8(%rsp),%rdi
  movss  0x24(%rsp),%xmm3
  movaps %xmm3,%xmm0
  addss  (%rdi),%xmm0
  movss  %xmm0,(%rbx)
  movss  (%rdi),%xmm0
  subss  %xmm3,%xmm0
  mov    0x10(%rsp),%rax
  movss  %xmm0,(%rax)
  mov    0x18(%rsp),%rax
  movss  (%rax),%xmm0
  mov    0x28(%rsp),%rax
  movss  %xmm0,(%rbx,%rax,4)
  mov    $0x1,%eax
  sub    %rdi,%rbx
L20:
  movss  (%r12),%xmm0
  addss  0x0(%rbp),%xmm0
  movss  %xmm0,(%rbx,%r12,1)
  movss  (%r12),%xmm0
  subss  0x0(%rbp),%xmm0
  movss  %xmm0,(%rbx,%rbp,1)
  add    $0x1,%eax
  add    $0x4,%r12
  sub    $0x4,%rbp
  cmp    %eax,%r15d
  jg     L20
L65:
  mov    0x8(%rsp),%rdi
  call   <free@plt>
  add    $0x38,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L63:
  pxor   %xmm0,%xmm0
  jmp    L43
L37:
  mov    %r14d,%edx
  mov    %ebp,%esi
  mov    0x8(%rsp),%r14
  mov    %r14,%rdi
  mov    $0x0,%eax
  call   <rsfft@plt>
  movss  0x24(%rsp),%xmm4
  movaps %xmm4,%xmm0
  addss  (%r14),%xmm0
  movss  %xmm0,(%rbx)
  movss  (%r14),%xmm0
  subss  %xmm4,%xmm0
  mov    0x10(%rsp),%rax
  movss  %xmm0,(%rax)
  mov    0x18(%rsp),%rax
  movss  (%rax),%xmm0
  mov    0x28(%rsp),%rax
  movss  %xmm0,(%rbx,%rax,4)
  jmp    L65
```

tool_calls: name: disassemble_data
arguments: tag: D8
type_infered: f64

tool: D8: 3.141592653589793

assistant: ```c
void resfft(float *x, int n, int m) {
  int n2, n4, i, j, k, nk;
  float b0, yt, *y;
  double e;
  void rsfft();
  n2 = n;
  n4 = n2 / 2;
  for (b0 = 0, i = 1; i < n2; i += 2)
    b0 += x[i];
  b0 *= 2;
  y = (float *)malloc(n2 * sizeof(float));
  y[0] = x[0];
  y[n4] = x[n2];
  for (i = 1; i < n4; i++) {
    j = 2 * i;
    yt = x[j + 1] - x[j - 1];
    y[i] = x[j] + yt;
    y[n2 - i] = x[j] - yt;
  }
  rsfft(y, n2, m);
  e = 3.141592653589793 / n;
  for (k = 1; k < n4; k++)
    y[n2 - k] /= 2 * sin(e * k);
  x[0] = y[0] + b0;
  x[n2] = y[0] - b0;
  x[n4] = y[n4];
  for (k = 1; k < n4; k++) {
    nk = n2 - k;
    x[k] = y[k] + y[nk];
    x[nk] = y[k] - y[nk];
  }
  free(y);
}
```