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

```asm
<daxpy_>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  mov    %rsi,-0x20(%rbp)
  mov    %rdx,-0x28(%rbp)
  mov    %rcx,-0x30(%rbp)
  mov    %r8,-0x38(%rbp)
  mov    %r9,-0x40(%rbp)
  subq   $0x8,-0x38(%rbp)
  subq   $0x8,-0x28(%rbp)
  mov    -0x18(%rbp),%rax
  mov    (%rax),%eax
  test   %eax,%eax
  jg     L31
  mov    $0x0,%eax
  jmp    L157
L31:
  mov    -0x20(%rbp),%rax
  movsd  (%rax),%xmm0
  pxor   %xmm1,%xmm1
  ucomisd %xmm1,%xmm0
  jp     L1
  pxor   %xmm1,%xmm1
  ucomisd %xmm1,%xmm0
  jne    L1
  mov    $0x0,%eax
  jmp    L157
L1:
  mov    -0x30(%rbp),%rax
  mov    (%rax),%eax
  cmp    $0x1,%eax
  jne    L187
  mov    -0x40(%rbp),%rax
  mov    (%rax),%eax
  cmp    $0x1,%eax
  je     L177
L187:
  movl   $0x1,D108(%rip)
  movl   $0x1,D215(%rip)
  mov    -0x30(%rbp),%rax
  mov    (%rax),%eax
  test   %eax,%eax
  jns    L32
  mov    -0x18(%rbp),%rax
  mov    (%rax),%eax
  mov    $0x1,%edx
  sub    %eax,%edx
  mov    -0x30(%rbp),%rax
  mov    (%rax),%eax
  imul   %edx,%eax
  add    $0x1,%eax
  mov    %eax,D212(%rip)
L32:
  mov    -0x40(%rbp),%rax
  mov    (%rax),%eax
  test   %eax,%eax
  jns    L47
  mov    -0x18(%rbp),%rax
  mov    (%rax),%eax
  mov    $0x1,%edx
  sub    %eax,%edx
  mov    -0x40(%rbp),%rax
  mov    (%rax),%eax
  imul   %edx,%eax
  add    $0x1,%eax
  mov    %eax,D212(%rip)
L47:
  mov    -0x18(%rbp),%rax
  mov    (%rax),%eax
  mov    %eax,-0x4(%rbp)
  movl   $0x1,D212(%rip)
  jmp    L76
L107:
  mov    D212(%rip),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm1
  mov    -0x20(%rbp),%rax
  movsd  (%rax),%xmm2
  mov    D212(%rip),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  %xmm2,%xmm0
  mov    D212(%rip),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  addsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x30(%rbp),%rax
  mov    (%rax),%edx
  mov    D212(%rip),%eax
  add    %edx,%eax
  mov    %eax,D370(%rip)
  mov    -0x40(%rbp),%rax
  mov    (%rax),%edx
  mov    D212(%rip),%eax
  add    %edx,%eax
  mov    %eax,D370(%rip)
  mov    D212(%rip),%eax
  add    $0x1,%eax
  mov    %eax,D370(%rip)
L76:
  mov    D370(%rip),%eax
  cmp    %eax,-0x4(%rbp)
  jge    L107
  mov    $0x0,%eax
  jmp    L157
L177:
  nop
  mov    -0x18(%rbp),%rax
  mov    (%rax),%eax
  cltd
  shr    $0x1e,%edx
  add    %edx,%eax
  and    $0x3,%eax
  sub    %edx,%eax
  mov    %eax,D370(%rip)
  mov    D370(%rip),%eax
  test   %eax,%eax
  je     L120
  mov    D370(%rip),%eax
  mov    %eax,-0x4(%rbp)
  movl   $0x1,D370(%rip)
  jmp    L24
L100:
  mov    D370(%rip),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm1
  mov    -0x20(%rbp),%rax
  movsd  (%rax),%xmm2
  mov    D370(%rip),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  %xmm2,%xmm0
  mov    D370(%rip),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  addsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  mov    D370(%rip),%eax
  add    $0x1,%eax
  mov    %eax,D437(%rip)
L24:
  mov    D437(%rip),%eax
  cmp    %eax,-0x4(%rbp)
  jge    L100
  mov    -0x18(%rbp),%rax
  mov    (%rax),%eax
  cmp    $0x3,%eax
  jg     L150
  mov    $0x0,%eax
  jmp    L157
L120:
  nop
  jmp    L69
L150:
  nop
L69:
  mov    D370(%rip),%eax
  add    $0x1,%eax
  mov    %eax,D437(%rip)
  mov    -0x18(%rbp),%rax
  mov    (%rax),%eax
  mov    %eax,-0x4(%rbp)
  mov    D437(%rip),%eax
  mov    %eax,D436(%rip)
  jmp    L168
L68:
  mov    D436(%rip),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm1
  mov    -0x20(%rbp),%rax
  movsd  (%rax),%xmm2
  mov    D436(%rip),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  %xmm2,%xmm0
  mov    D436(%rip),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  addsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  mov    D436(%rip),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm1
  mov    -0x20(%rbp),%rax
  movsd  (%rax),%xmm2
  mov    D436(%rip),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  %xmm2,%xmm0
  mov    D436(%rip),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  addsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  mov    D436(%rip),%eax
  cltq
  add    $0x2,%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm1
  mov    -0x20(%rbp),%rax
  movsd  (%rax),%xmm2
  mov    D436(%rip),%eax
  cltq
  add    $0x2,%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  %xmm2,%xmm0
  mov    D436(%rip),%eax
  cltq
  add    $0x2,%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  addsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  mov    D436(%rip),%eax
  cltq
  add    $0x3,%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm1
  mov    -0x20(%rbp),%rax
  movsd  (%rax),%xmm2
  mov    D436(%rip),%eax
  cltq
  add    $0x3,%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  %xmm2,%xmm0
  mov    D436(%rip),%eax
  cltq
  add    $0x3,%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  addsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  mov    D436(%rip),%eax
  add    $0x4,%eax
  mov    %eax,D436(%rip)
L168:
  mov    D436(%rip),%eax
  cmp    %eax,-0x4(%rbp)
  jge    L68
  mov    $0x0,%eax
L157:
  pop    %rbp
  ret
```

assistant: ```c
int daxpy_(int *n, double *da, double *dx, int *incx, double *dy, int *incy) {
  int i__1;
  static int i__, m, ix, iy, mp1;
  --dy;
  --dx;
  if (*n <= 0) {
    return 0;
  }
  if (*da == 0.) {
    return 0;
  }
  if (*incx == 1 && *incy == 1) {
    goto L20;
  }
  ix = 1;
  iy = 1;
  if (*incx < 0) {
    ix = (-(*n) + 1) * *incx + 1;
  }
  if (*incy < 0) {
    iy = (-(*n) + 1) * *incy + 1;
  }
  i__1 = *n;
  for (i__ = 1; i__ <= i__1; ++i__) {
    dy[iy] += *da * dx[ix];
    ix += *incx;
    iy += *incy;
  }
  return 0;
L20:
  m = *n % 4;
  if (m == 0) {
    goto L40;
  }
  i__1 = m;
  for (i__ = 1; i__ <= i__1; ++i__) {
    dy[i__] += *da * dx[i__];
  }
  if (*n < 4) {
    return 0;
  }
L40:
  mp1 = m + 1;
  i__1 = *n;
  for (i__ = mp1; i__ <= i__1; i__ += 4) {
    dy[i__] += *da * dx[i__];
    dy[i__ + 1] += *da * dx[i__ + 1];
    dy[i__ + 2] += *da * dx[i__ + 2];
    dy[i__ + 3] += *da * dx[i__ + 3];
  }
  return 0;
}
```