user: Please show me the C implementation that matches the assembly code listed below:

```asm
<lspdf_odd>:
  endbr64
  lea    0x1(%rsi),%eax
  push   %r15
  mov    %rdx,%r15
  push   %r14
  push   %r13
  push   %r12
  lea    0x8(%rdx),%r12
  push   %rbp
  mov    %eax,%ebp
  push   %rbx
  shr    $0x1f,%ebp
  add    %eax,%ebp
  and    $0xfffffffe,%ebp
  sub    $0x58,%rsp
  movslq %ebp,%rax
  movsd  (%rdx),%xmm1
  movsd  0x8(%rdx),%xmm2
  mov    %rax,0x20(%rsp)
  shl    $0x3,%rax
  mov    %rax,0x40(%rsp)
  lea    (%rdx,%rax,1),%r14
  lea    -0x1(%rsi),%eax
  movsd  %xmm0,0x8(%rsp)
  movsd  0x8(%rdi),%xmm0
  mov    %rdi,0x30(%rsp)
  mov    %esi,0x3c(%rsp)
  mov    %r12,0x28(%rsp)
  mov    %eax,0x38(%rsp)
  test   %eax,%eax
  jle    L88
  lea    -0x2(%rsi),%eax
  lea    0x10(%rdi),%rbp
  movapd %xmm1,%xmm3
  mov    %r14,%rbx
  mov    %eax,0x4c(%rsp)
  shr    %eax
  mov    %eax,%r8d
  mov    %eax,0x48(%rsp)
  shl    $0x4,%r8
  lea    0x18(%rdx,%r8,1),%r13
L55:
  movsd  -0x8(%rbp),%xmm0
  add    $0x10,%r12
  add    $0x10,%rbx
  add    $0x10,%rbp
  movsd  %xmm3,0x18(%rsp)
  movsd  %xmm1,0x10(%rsp)
  call   <cos@plt>
  movsd  0x10(%rsp),%xmm1
  movapd %xmm0,%xmm2
  movapd %xmm1,%xmm0
  addsd  %xmm1,%xmm0
  mulsd  %xmm0,%xmm2
  movsd  -0x10(%r12),%xmm0
  subsd  %xmm2,%xmm0
  movsd  %xmm0,-0x10(%r12)
  movsd  -0x10(%rbp),%xmm0
  call   <cos@plt>
  movsd  0x18(%rsp),%xmm3
  movsd  0x10(%rsp),%xmm1
  movapd %xmm0,%xmm2
  movapd %xmm3,%xmm0
  addsd  %xmm3,%xmm0
  mulsd  %xmm0,%xmm2
  movsd  -0x10(%rbx),%xmm0
  subsd  %xmm2,%xmm0
  movsd  %xmm0,-0x10(%rbx)
  addsd  -0x8(%r12),%xmm1
  movsd  %xmm1,-0x8(%r12)
  addsd  -0x8(%rbx),%xmm3
  movsd  %xmm3,-0x8(%rbx)
  movsd  -0x10(%r12),%xmm0
  addsd  -0x10(%rbx),%xmm0
  addsd  0x8(%rsp),%xmm0
  movsd  -0x8(%r12),%xmm1
  movsd  %xmm0,0x8(%rsp)
  cmp    %r12,%r13
  jne    L55
  mov    0x48(%rsp),%eax
  mov    0x28(%rsp),%r13
  movsd  %xmm1,0x18(%rsp)
  lea    0x2(%rax,%rax,1),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    %rax,0x10(%rsp)
  mov    0x30(%rsp),%rax
  add    %rdx,%r13
  movsd  0x8(%rax,%rdx,1),%xmm0
  call   <cos@plt>
  movsd  0x18(%rsp),%xmm1
  movslq 0x3c(%rsp),%r12
  mov    0x20(%rsp),%rbp
  mov    0x10(%rsp),%rax
  addsd  %xmm1,%xmm1
  add    %r12,%rbp
  shl    $0x3,%rbp
  mulsd  %xmm0,%xmm1
  movsd  0x0(%r13),%xmm0
  lea    -0x8(%rbp),%rdx
  lea    -0x18(%rbp),%r8
  subsd  %xmm1,%xmm0
  movsd  %xmm0,0x0(%r13)
  subsd  (%r14,%rax,8),%xmm0
  lea    0x8(,%r12,8),%rax
  lea    -0x10(%rax),%r9
  addsd  0x8(%rsp),%xmm0
  cmp    %r9,%rdx
  setle  %dl
  cmp    %rax,%r8
  setge  %cl
  or     %cl,%dl
  je     L0
  mov    0x40(%rsp),%rdx
  add    $0x8,%rdx
  cmp    $0x8,%rdx
  seta   %cl
  cmpl   $0x1,0x4c(%rsp)
  seta   %dl
  test   %dl,%cl
  je     L0
  mov    0x38(%rsp),%edx
  lea    -0x18(%r15,%rax,1),%r10
  add    %r15,%r9
  add    %r15,%r8
  lea    -0x10(%r15,%rbp,1),%rcx
  xor    %eax,%eax
  shr    %edx
  neg    %rdx
  shl    $0x4,%rdx
  nopw   0x0(%rax,%rax,1)
L59:
  movupd (%r10,%rax,1),%xmm5
  movups %xmm5,(%r9,%rax,1)
  movupd (%r8,%rax,1),%xmm6
  movups %xmm6,(%rcx,%rax,1)
  sub    $0x10,%rax
  cmp    %rax,%rdx
  jne    L59
  mov    0x38(%rsp),%ecx
  mov    %ecx,%eax
  and    $0x1,%eax
  and    $0x1,%ecx
  je     L11
  cltq
  movsd  (%r15,%rax,8),%xmm1
  lea    0x0(,%rax,8),%rdx
  movsd  %xmm1,0x8(%r15,%rdx,1)
  movsd  -0x8(%r14,%rdx,1),%xmm1
  movsd  %xmm1,(%r14,%rax,8)
L11:
  movsd  (%r15),%xmm1
L48:
  movsd  D6(%rip),%xmm2
  movsd  %xmm1,(%r14)
  mulsd  %xmm0,%xmm2
  unpcklpd %xmm1,%xmm2
  movups %xmm2,(%r15)
  add    $0x58,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nopl   (%rax)
L0:
  movslq 0x38(%rsp),%rbx
  nopl   (%rax)
L46:
  movsd  (%r15,%rbx,8),%xmm1
  movsd  %xmm1,0x8(%r15,%rbx,8)
  movsd  -0x8(%r14,%rbx,8),%xmm1
  movsd  %xmm1,(%r14,%rbx,8)
  sub    $0x1,%rbx
  test   %ebx,%ebx
  jg     L46
  jmp    L11
  nopl   0x0(%rax)
L88:
  movsd  %xmm1,0x18(%rsp)
  movsd  %xmm2,0x10(%rsp)
  call   <cos@plt>
  movsd  0x18(%rsp),%xmm1
  movsd  0x10(%rsp),%xmm2
  movapd %xmm0,%xmm3
  movapd %xmm1,%xmm0
  addsd  %xmm1,%xmm0
  mulsd  %xmm3,%xmm0
  subsd  %xmm0,%xmm2
  movsd  0x8(%rsp),%xmm0
  movsd  %xmm2,0x8(%r15)
  subsd  (%r14),%xmm2
  addsd  %xmm2,%xmm0
  jmp    L48
```

tool_calls: name: parse_data
arguments: label: D6
type_guessed: byte[8]

tool: {"D6": [0x00,0x00,0x00,0x00,0x00,0x00,0xe0,0xbf]}

assistant: ```c
double lspdf_odd(double x, double *f, const int m, double *d) {
  int i;
  int mh1;
  double *d1, *d2, *lsp, x1, x2;
  mh1 = (m + 1) / 2;
  d1 = d + 1;
  d2 = d1 + (mh1 + mh1 - 1);
  lsp = f + 1;
  x1 = x2 = d[0];
  for (i = 0; i < m - 1; i += 2) {
    d1[i] -= 2.0 * x1 * cos(lsp[i]);
    d2[i] -= 2.0 * x2 * cos(lsp[i + 1]);
    d1[i + 1] += x1;
    d2[i + 1] += x2;
    x += d1[i] + d2[i];
    x1 = d1[i + 1];
    x2 = d2[i + 1];
  }
  d1[i] -= 2.0 * x1 * cos(lsp[i]);
  x += d1[i] - d2[i];
  for (i = m - 1; i > 0; i--) {
    d1[i] = d1[i - 1];
    d2[i] = d2[i - 1];
  }
  d1[0] = d2[0] = d[0];
  d[0] = -0.5 * x;
  return (x);
}
```