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

```asm
<central2d_correct_sd>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    0x48(%rsp),%eax
  mov    %rsi,-0x20(%rsp)
  mov    %rdx,%rsi
  mov    %rcx,%rdx
  mov    0x38(%rsp),%rcx
  cmp    %eax,0x40(%rsp)
  jge    L123
  sub    0x40(%rsp),%eax
  movaps %xmm0,%xmm2
  movaps %xmm1,%xmm3
  mov    %rdi,%r10
  lea    -0x1(%rax),%ebx
  mov    %eax,-0x10(%rsp)
  mov    %ebx,-0xc(%rsp)
  cmp    $0x2,%ebx
  jbe    L117
  movslq 0x40(%rsp),%rbx
  shr    $0x2,%eax
  movaps %xmm0,%xmm6
  movaps D26(%rip),%xmm5
  mov    %eax,%r11d
  movaps D42(%rip),%xmm4
  xor    %eax,%eax
  shufps $0x0,%xmm6,%xmm6
  lea    0x0(,%rbx,4),%rdi
  mov    %rbx,-0x18(%rsp)
  shl    $0x4,%r11
  lea    0x4(%rdi),%rbx
  lea    (%r8,%rdi,1),%r15
  lea    (%r8,%rbx,1),%r14
  lea    (%rsi,%rdi,1),%r13
  lea    (%rsi,%rbx,1),%r12
  lea    (%r9,%rdi,1),%rbp
  add    %r9,%rbx
  add    %r10,%rdi
  xchg   %ax,%ax
L120:
  movups (%r14,%rax,1),%xmm7
  movups (%r15,%rax,1),%xmm0
  movups 0x0(%r13,%rax,1),%xmm1
  addps  %xmm7,%xmm0
  movups (%r12,%rax,1),%xmm7
  subps  %xmm7,%xmm1
  movups (%rbx,%rax,1),%xmm7
  mulps  %xmm5,%xmm0
  mulps  %xmm4,%xmm1
  addps  %xmm1,%xmm0
  movups 0x0(%rbp,%rax,1),%xmm1
  subps  %xmm7,%xmm1
  mulps  %xmm6,%xmm1
  addps  %xmm1,%xmm0
  movups %xmm0,(%rdi,%rax,1)
  add    $0x10,%rax
  cmp    %r11,%rax
  jne    L120
  mov    -0x10(%rsp),%ebx
  mov    0x40(%rsp),%eax
  mov    %ebx,%edi
  and    $0xfffffffc,%edi
  add    %edi,%eax
  cmp    %edi,%ebx
  je     L118
L30:
  mov    -0x10(%rsp),%r11d
  sub    %edi,%r11d
  cmp    $0x1,%r11d
  je     L21
  movslq 0x40(%rsp),%rbx
  add    %rbx,%rdi
  lea    0x0(,%rdi,4),%rbx
  movq   (%r8,%rdi,4),%xmm0
  movq   0x4(%r8,%rbx,1),%xmm1
  movq   0x4(%rsi,%rbx,1),%xmm4
  addps  %xmm1,%xmm0
  movq   D26(%rip),%xmm1
  mulps  %xmm1,%xmm0
  movq   (%rsi,%rdi,4),%xmm1
  subps  %xmm4,%xmm1
  movq   D42(%rip),%xmm4
  mulps  %xmm4,%xmm1
  movq   0x4(%r9,%rbx,1),%xmm4
  addps  %xmm1,%xmm0
  movq   (%r9,%rdi,4),%xmm1
  subps  %xmm4,%xmm1
  movaps %xmm2,%xmm4
  shufps $0xe0,%xmm4,%xmm4
  mulps  %xmm4,%xmm1
  addps  %xmm1,%xmm0
  movlps %xmm0,(%r10,%rdi,4)
  mov    %r11d,%edi
  and    $0xfffffffe,%edi
  add    %edi,%eax
  cmp    %edi,%r11d
  je     L24
L21:
  cltq
  movss  (%r8,%rax,4),%xmm0
  movss  (%rsi,%rax,4),%xmm1
  addss  0x4(%r8,%rax,4),%xmm0
  subss  0x4(%rsi,%rax,4),%xmm1
  mulss  D26(%rip),%xmm0
  mulss  D42(%rip),%xmm1
  addss  %xmm1,%xmm0
  movss  (%r9,%rax,4),%xmm1
  subss  0x4(%r9,%rax,4),%xmm1
  mulss  %xmm2,%xmm1
  addss  %xmm1,%xmm0
  movss  %xmm0,(%r10,%rax,4)
L24:
  cmpl   $0x2,-0xc(%rsp)
  jbe    L20
  movslq 0x40(%rsp),%rax
  movaps D42(%rip),%xmm4
  mov    %rax,-0x18(%rsp)
L118:
  mov    -0x18(%rsp),%rsi
  mov    -0x10(%rsp),%edi
  movaps %xmm3,%xmm1
  xor    %eax,%eax
  shufps $0x0,%xmm1,%xmm1
  shl    $0x2,%rsi
  shr    $0x2,%edi
  lea    0x4(%rsi),%r8
  lea    (%rdx,%rsi,1),%r11
  shl    $0x4,%rdi
  lea    (%rdx,%r8,1),%r10
  lea    (%rcx,%rsi,1),%r9
  add    %rcx,%r8
  add    -0x20(%rsp),%rsi
  nopl   0x0(%rax,%rax,1)
L109:
  movups (%r8,%rax,1),%xmm0
  movups (%r9,%rax,1),%xmm5
  movups (%r10,%rax,1),%xmm2
  movups (%r11,%rax,1),%xmm6
  addps  %xmm5,%xmm0
  addps  %xmm6,%xmm2
  mulps  %xmm1,%xmm0
  mulps  %xmm4,%xmm2
  addps  %xmm2,%xmm0
  movups %xmm0,(%rsi,%rax,1)
  add    $0x10,%rax
  cmp    %rdi,%rax
  jne    L109
  mov    -0x10(%rsp),%ebx
  mov    0x40(%rsp),%eax
  mov    %ebx,%edi
  and    $0xfffffffc,%edi
  add    %edi,%eax
  cmp    %ebx,%edi
  je     L123
L94:
  mov    -0x10(%rsp),%r8d
  sub    %edi,%r8d
  cmp    $0x1,%r8d
  je     L60
  movslq 0x40(%rsp),%rsi
  mov    -0x20(%rsp),%rbx
  add    %rdi,%rsi
  lea    0x0(,%rsi,4),%rdi
  movq   (%rdx,%rsi,4),%xmm0
  movq   0x4(%rdx,%rdi,1),%xmm1
  movq   0x4(%rcx,%rdi,1),%xmm2
  addps  %xmm1,%xmm0
  movq   D42(%rip),%xmm1
  mulps  %xmm1,%xmm0
  movq   (%rcx,%rsi,4),%xmm1
  addps  %xmm2,%xmm1
  movaps %xmm3,%xmm2
  shufps $0xe0,%xmm2,%xmm2
  mulps  %xmm2,%xmm1
  addps  %xmm1,%xmm0
  movlps %xmm0,(%rbx,%rsi,4)
  mov    %r8d,%esi
  and    $0xfffffffe,%esi
  add    %esi,%eax
  cmp    %esi,%r8d
  je     L123
L60:
  cltq
  mov    -0x20(%rsp),%rbx
  lea    0x0(,%rax,4),%rsi
  movss  0x4(%rcx,%rsi,1),%xmm1
  addss  (%rcx,%rax,4),%xmm1
  movss  0x4(%rdx,%rsi,1),%xmm0
  addss  (%rdx,%rax,4),%xmm0
  mulss  D42(%rip),%xmm0
  mulss  %xmm3,%xmm1
  addss  %xmm0,%xmm1
  movss  %xmm1,(%rbx,%rax,4)
L123:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L117:
  mov    0x40(%rsp),%eax
  xor    %edi,%edi
  jmp    L30
L20:
  mov    0x40(%rsp),%eax
  xor    %edi,%edi
  jmp    L94
```

tool_calls: name: disassemble_data
arguments: data_tag: D26
datatype: byte[16]
name: disassemble_data
arguments: data_tag: D42
datatype: byte[16]

tool: {"D26": [0x00,0x00,0x80,0x3e,0x00,0x00,0x80,0x3e,0x00,0x00,0x80,0x3e,0x00,0x00,0x80,0x3e]}

tool: {"D42": [0x00,0x00,0x80,0x3d,0x00,0x00,0x80,0x3d,0x00,0x00,0x80,0x3d,0x00,0x00,0x80,0x3d]}

assistant: ```c
void central2d_correct_sd(float *restrict s, float *restrict d, const float *restrict ux, const float *restrict uy, const float *restrict u, const float *restrict f, const float *restrict g, float dtcdx2, float dtcdy2, int xlo, int xhi) {
  for (int ix = xlo; ix < xhi; ++ix)
    s[ix] = 0.2500f * (u[ix] + u[ix + 1]) + 0.0625f * (ux[ix] - ux[ix + 1]) + dtcdx2 * (f[ix] - f[ix + 1]);
  for (int ix = xlo; ix < xhi; ++ix)
    d[ix] = 0.0625f * (uy[ix] + uy[ix + 1]) + dtcdy2 * (g[ix] + g[ix + 1]);
}
```