user: What would the C source look like for the assembly code provided here:

```asm
<makeP_Flex_Ancestral>:
  endbr64
  push   %r15
  push   %r14
  mov    %ecx,%r14d
  push   %r13
  mov    %rdx,%r13
  push   %r12
  mov    %rdi,%r12
  xor    %edi,%edi
  push   %rbp
  lea    -0x1(%r9),%ebp
  push   %rbx
  mov    %r9d,%ebx
  sub    $0x458,%rsp
  mov    %rsi,0x30(%rsp)
  mov    %r8,0x38(%rsp)
  mov    %fs:0x28,%rax
  mov    %rax,0x448(%rsp)
  xor    %eax,%eax
  mov    %r9d,%eax
  imul   %r9d,%eax
  cmp    $0x40,%r9d
  setle  %dil
  mov    %eax,0x24(%rsp)
  call   <assert@plt>
  test   %ebp,%ebp
  jle    L6
  lea    -0x2(%rbx),%esi
  lea    0x40(%rsp),%rcx
  pxor   %xmm1,%xmm1
  xor    %eax,%eax
  xchg   %ax,%ax
L54:
  movsd  0x0(%r13,%rax,8),%xmm0
  mov    %rax,%rdx
  mulsd  %xmm1,%xmm0
  movsd  %xmm0,(%rcx,%rax,8)
  add    $0x1,%rax
  cmp    %rsi,%rdx
  jne    L54
L6:
  test   %r14d,%r14d
  jle    L87
  lea    -0x1(%r14),%eax
  mov    %r12,0x10(%rsp)
  movslq %ebx,%r14
  lea    0x40(%rsp),%r15
  lea    0x8(%r12,%rax,8),%rax
  movl   $0x0,0x18(%rsp)
  shl    $0x3,%r14
  mov    %rax,0x28(%rsp)
  lea    -0x2(%rbx),%eax
  mov    %eax,0x1c(%rsp)
  nopl   0x0(%rax,%rax,1)
L45:
  test   %ebp,%ebp
  jle    L2
  mov    0x10(%rsp),%rax
  xor    %r13d,%r13d
  lea    0x240(%rsp),%r12
  mov    %ebx,0x20(%rsp)
  mov    %r13,%rbx
  mov    %r12,%r13
  movsd  (%rax),%xmm2
  mov    0x1c(%rsp),%eax
  movsd  %xmm2,0x8(%rsp)
  mov    %rax,%r12
  nopw   0x0(%rax,%rax,1)
L106:
  movsd  0x8(%rsp),%xmm0
  mulsd  (%r15,%rbx,8),%xmm0
  call   <exp@plt>
  mov    %rbx,%rdx
  movsd  %xmm0,0x0(%r13,%rbx,8)
  add    $0x1,%rbx
  cmp    %rdx,%r12
  jne    L106
  mov    0x20(%rsp),%ebx
L2:
  test   %ebx,%ebx
  jle    L16
  movslq 0x18(%rsp),%rax
  mov    0x38(%rsp),%rdi
  xor    %r10d,%r10d
  xor    %r9d,%r9d
  mov    0x1c(%rsp),%r8d
  mov    0x30(%rsp),%r11
  lea    (%rdi,%rax,8),%rcx
  nopw   0x0(%rax,%rax,1)
L5:
  mov    D2(%rip),%rax
  mov    %rax,(%rcx)
  cmp    $0x1,%ebx
  je     L33
  movslq %r10d,%rax
  lea    0x240(%rsp),%rsi
  lea    (%r11,%rax,8),%rdi
  xor    %eax,%eax
L80:
  movsd  (%rsi,%rax,8),%xmm0
  mulsd  (%rdi,%rax,8),%xmm0
  mov    %rax,%rdx
  movsd  %xmm0,0x8(%rcx,%rax,8)
  add    $0x1,%rax
  cmp    %r8,%rdx
  jne    L80
L33:
  add    $0x1,%r9d
  add    %r14,%rcx
  add    %ebp,%r10d
  cmp    %r9d,%ebx
  jne    L5
L16:
  addq   $0x8,0x10(%rsp)
  mov    0x24(%rsp),%edi
  mov    0x10(%rsp),%rax
  add    %edi,0x18(%rsp)
  cmp    0x28(%rsp),%rax
  jne    L45
L87:
  mov    0x448(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L76
  add    $0x458,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L76:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: unpack_data
arguments: data_label: D2
datatype: f64

tool: D2: 1

assistant: ```c
void makeP_Flex_Ancestral(double *rptr, double *EI, double *EIGN, int numberOfCategories, double *left, const int numStates) {
  int i, j, k;
  const int rates = numStates - 1, statesSquare = numStates * numStates;
  double z1 = 0.0, lz1[64], d1[64];
  assert(numStates <= 64);
  for (i = 0; i < rates; i++)
    lz1[i] = EIGN[i] * z1;
  for (i = 0; i < numberOfCategories; i++) {
    for (j = 0; j < rates; j++)
      d1[j] = exp(rptr[i] * lz1[j]);
    for (j = 0; j < numStates; j++) {
      left[statesSquare * i + numStates * j] = 1.0;
      for (k = 1; k < numStates; k++)
        left[statesSquare * i + numStates * j + k] = d1[k - 1] * EI[rates * j + (k - 1)];
    }
  }
}
```