user: What is the c source code of the assembly code below:

```asm
<Blend43>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  mov    %rdi,-0x18(%rbp)
  mov    %rsi,-0x20(%rbp)
  mov    %edx,-0x24(%rbp)
  mov    %ecx,-0x28(%rbp)
  mov    %r8,-0x30(%rbp)
  mov    %r9d,-0x34(%rbp)
  pxor   %xmm0,%xmm0
  movss  %xmm0,-0x8(%rbp)
  mov    -0x18(%rbp),%rax
  movss  (%rax),%xmm0
  movss  %xmm0,-0x4(%rbp)
  mov    -0x24(%rbp),%eax
  imul   -0x34(%rbp),%eax
  mov    %eax,%edx
  mov    -0x28(%rbp),%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  movaps %xmm0,%xmm1
  mulss  -0x4(%rbp),%xmm1
  mov    -0x20(%rbp),%rax
  movss  (%rax),%xmm0
  mulss  %xmm1,%xmm0
  movss  -0x8(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x8(%rbp)
  mov    -0x24(%rbp),%eax
  imul   -0x34(%rbp),%eax
  mov    %eax,%edx
  mov    -0x28(%rbp),%eax
  add    %edx,%eax
  cltq
  shl    $0x2,%rax
  lea    -0x4(%rax),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  movaps %xmm0,%xmm1
  mulss  -0x4(%rbp),%xmm1
  mov    -0x20(%rbp),%rax
  add    $0x4,%rax
  movss  (%rax),%xmm0
  mulss  %xmm1,%xmm0
  movss  -0x8(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x8(%rbp)
  mov    -0x24(%rbp),%eax
  imul   -0x34(%rbp),%eax
  mov    %eax,%edx
  mov    -0x28(%rbp),%eax
  add    %edx,%eax
  cltq
  shl    $0x2,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  movaps %xmm0,%xmm1
  mulss  -0x4(%rbp),%xmm1
  mov    -0x20(%rbp),%rax
  add    $0x8,%rax
  movss  (%rax),%xmm0
  mulss  %xmm1,%xmm0
  movss  -0x8(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x8(%rbp)
  mov    -0x18(%rbp),%rax
  movss  0x4(%rax),%xmm0
  movss  %xmm0,-0x4(%rbp)
  mov    -0x24(%rbp),%eax
  sub    $0x1,%eax
  imul   -0x34(%rbp),%eax
  mov    %eax,%edx
  mov    -0x28(%rbp),%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  movaps %xmm0,%xmm1
  mulss  -0x4(%rbp),%xmm1
  mov    -0x20(%rbp),%rax
  movss  (%rax),%xmm0
  mulss  %xmm1,%xmm0
  movss  -0x8(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x8(%rbp)
  mov    -0x24(%rbp),%eax
  sub    $0x1,%eax
  imul   -0x34(%rbp),%eax
  mov    %eax,%edx
  mov    -0x28(%rbp),%eax
  add    %edx,%eax
  cltq
  shl    $0x2,%rax
  lea    -0x4(%rax),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  movaps %xmm0,%xmm1
  mulss  -0x4(%rbp),%xmm1
  mov    -0x20(%rbp),%rax
  add    $0x4,%rax
  movss  (%rax),%xmm0
  mulss  %xmm1,%xmm0
  movss  -0x8(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x8(%rbp)
  mov    -0x24(%rbp),%eax
  sub    $0x1,%eax
  imul   -0x34(%rbp),%eax
  mov    %eax,%edx
  mov    -0x28(%rbp),%eax
  add    %edx,%eax
  cltq
  shl    $0x2,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  movaps %xmm0,%xmm1
  mulss  -0x4(%rbp),%xmm1
  mov    -0x20(%rbp),%rax
  add    $0x8,%rax
  movss  (%rax),%xmm0
  mulss  %xmm1,%xmm0
  movss  -0x8(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x8(%rbp)
  mov    -0x18(%rbp),%rax
  movss  0x8(%rax),%xmm0
  movss  %xmm0,-0x4(%rbp)
  mov    -0x24(%rbp),%eax
  sub    $0x2,%eax
  imul   -0x34(%rbp),%eax
  mov    %eax,%edx
  mov    -0x28(%rbp),%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  movaps %xmm0,%xmm1
  mulss  -0x4(%rbp),%xmm1
  mov    -0x20(%rbp),%rax
  movss  (%rax),%xmm0
  mulss  %xmm1,%xmm0
  movss  -0x8(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x8(%rbp)
  mov    -0x24(%rbp),%eax
  sub    $0x2,%eax
  imul   -0x34(%rbp),%eax
  mov    %eax,%edx
  mov    -0x28(%rbp),%eax
  add    %edx,%eax
  cltq
  shl    $0x2,%rax
  lea    -0x4(%rax),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  movaps %xmm0,%xmm1
  mulss  -0x4(%rbp),%xmm1
  mov    -0x20(%rbp),%rax
  add    $0x4,%rax
  movss  (%rax),%xmm0
  mulss  %xmm1,%xmm0
  movss  -0x8(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x8(%rbp)
  mov    -0x24(%rbp),%eax
  sub    $0x2,%eax
  imul   -0x34(%rbp),%eax
  mov    %eax,%edx
  mov    -0x28(%rbp),%eax
  add    %edx,%eax
  cltq
  shl    $0x2,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  movaps %xmm0,%xmm1
  mulss  -0x4(%rbp),%xmm1
  mov    -0x20(%rbp),%rax
  add    $0x8,%rax
  movss  (%rax),%xmm0
  mulss  %xmm1,%xmm0
  movss  -0x8(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x8(%rbp)
  mov    -0x18(%rbp),%rax
  movss  0xc(%rax),%xmm0
  movss  %xmm0,-0x4(%rbp)
  mov    -0x24(%rbp),%eax
  sub    $0x3,%eax
  imul   -0x34(%rbp),%eax
  mov    %eax,%edx
  mov    -0x28(%rbp),%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  movaps %xmm0,%xmm1
  mulss  -0x4(%rbp),%xmm1
  mov    -0x20(%rbp),%rax
  movss  (%rax),%xmm0
  mulss  %xmm1,%xmm0
  movss  -0x8(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x8(%rbp)
  mov    -0x24(%rbp),%eax
  sub    $0x3,%eax
  imul   -0x34(%rbp),%eax
  mov    %eax,%edx
  mov    -0x28(%rbp),%eax
  add    %edx,%eax
  cltq
  shl    $0x2,%rax
  lea    -0x4(%rax),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  movaps %xmm0,%xmm1
  mulss  -0x4(%rbp),%xmm1
  mov    -0x20(%rbp),%rax
  add    $0x4,%rax
  movss  (%rax),%xmm0
  mulss  %xmm1,%xmm0
  movss  -0x8(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x8(%rbp)
  mov    -0x24(%rbp),%eax
  sub    $0x3,%eax
  imul   -0x34(%rbp),%eax
  mov    %eax,%edx
  mov    -0x28(%rbp),%eax
  add    %edx,%eax
  cltq
  shl    $0x2,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  movaps %xmm0,%xmm1
  mulss  -0x4(%rbp),%xmm1
  mov    -0x20(%rbp),%rax
  add    $0x8,%rax
  movss  (%rax),%xmm0
  mulss  %xmm1,%xmm0
  movss  -0x8(%rbp),%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,-0x8(%rbp)
  movss  -0x8(%rbp),%xmm0
  pop    %rbp
  ret
```

assistant: ```c
float Blend43(float x_basis[], float y_basis[], int i_x, int i_y, const float P[], const int n) {
  float S = 0;
  float x_basis_k1;
  x_basis_k1 = x_basis[0];
  S += P[i_x * n + i_y] * x_basis_k1 * y_basis[0];
  S += P[i_x * n + i_y - 1] * x_basis_k1 * y_basis[1];
  S += P[i_x * n + i_y - 2] * x_basis_k1 * y_basis[2];
  x_basis_k1 = x_basis[1];
  S += P[(i_x - 1) * n + i_y] * x_basis_k1 * y_basis[0];
  S += P[(i_x - 1) * n + i_y - 1] * x_basis_k1 * y_basis[1];
  S += P[(i_x - 1) * n + i_y - 2] * x_basis_k1 * y_basis[2];
  x_basis_k1 = x_basis[2];
  S += P[(i_x - 2) * n + i_y] * x_basis_k1 * y_basis[0];
  S += P[(i_x - 2) * n + i_y - 1] * x_basis_k1 * y_basis[1];
  S += P[(i_x - 2) * n + i_y - 2] * x_basis_k1 * y_basis[2];
  x_basis_k1 = x_basis[3];
  S += P[(i_x - 3) * n + i_y] * x_basis_k1 * y_basis[0];
  S += P[(i_x - 3) * n + i_y - 1] * x_basis_k1 * y_basis[1];
  S += P[(i_x - 3) * n + i_y - 2] * x_basis_k1 * y_basis[2];
  return S;
}
```