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

```asm
<rmsub_stride>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x50,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    %rsi,-0x30(%rbp)
  mov    %rdx,-0x38(%rbp)
  mov    %ecx,-0x3c(%rbp)
  mov    %r8d,-0x40(%rbp)
  mov    %r9d,-0x44(%rbp)
  mov    -0x3c(%rbp),%edx
  mov    -0x40(%rbp),%eax
  add    %eax,%edx
  mov    -0x44(%rbp),%eax
  add    %edx,%eax
  cmp    $0xc0,%eax
  jg     L40
  movl   $0x0,-0x14(%rbp)
  jmp    L0
L56:
  mov    -0x14(%rbp),%eax
  imul   0x20(%rbp),%eax
  mov    %eax,-0xc(%rbp)
  mov    -0x14(%rbp),%eax
  imul   0x10(%rbp),%eax
  mov    %eax,-0x8(%rbp)
  mov    -0x14(%rbp),%eax
  imul   0x18(%rbp),%eax
  mov    %eax,-0x4(%rbp)
  movl   $0x0,-0x10(%rbp)
  jmp    L20
L53:
  mov    -0x10(%rbp),%edx
  mov    -0x8(%rbp),%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm0
  mov    -0x10(%rbp),%edx
  mov    -0x4(%rbp),%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x30(%rbp),%rax
  add    %rdx,%rax
  movss  (%rax),%xmm1
  mov    -0x10(%rbp),%edx
  mov    -0xc(%rbp),%eax
  add    %edx,%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  subss  %xmm1,%xmm0
  movss  %xmm0,(%rax)
  addl   $0x1,-0x10(%rbp)
L20:
  mov    -0x10(%rbp),%eax
  cmp    -0x40(%rbp),%eax
  jl     L53
  addl   $0x1,-0x14(%rbp)
L0:
  mov    -0x14(%rbp),%eax
  cmp    -0x3c(%rbp),%eax
  jl     L56
  jmp    L54
L40:
  mov    -0x3c(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,-0x3c(%rbp)
  mov    -0x40(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,-0x40(%rbp)
  mov    -0x44(%rbp),%eax
  mov    %eax,%edx
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  mov    %eax,-0x44(%rbp)
  mov    -0x44(%rbp),%r9d
  mov    -0x40(%rbp),%r8d
  mov    -0x3c(%rbp),%ecx
  mov    -0x38(%rbp),%rdx
  mov    -0x30(%rbp),%rsi
  mov    -0x28(%rbp),%rax
  sub    $0x8,%rsp
  mov    0x20(%rbp),%edi
  push   %rdi
  mov    0x18(%rbp),%edi
  push   %rdi
  mov    0x10(%rbp),%edi
  push   %rdi
  mov    %rax,%rdi
  call   <rmsub_stride>
  add    $0x20,%rsp
  mov    -0x40(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x38(%rbp),%rax
  add    %rax,%rdx
  mov    -0x40(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x30(%rbp),%rax
  lea    (%rcx,%rax,1),%rsi
  mov    -0x40(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x28(%rbp),%rax
  lea    (%rcx,%rax,1),%rdi
  mov    -0x44(%rbp),%r9d
  mov    -0x40(%rbp),%r8d
  mov    -0x3c(%rbp),%eax
  sub    $0x8,%rsp
  mov    0x20(%rbp),%ecx
  push   %rcx
  mov    0x18(%rbp),%ecx
  push   %rcx
  mov    0x10(%rbp),%ecx
  push   %rcx
  mov    %eax,%ecx
  call   <rmsub_stride>
  add    $0x20,%rsp
  mov    -0x3c(%rbp),%eax
  imul   0x20(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x38(%rbp),%rax
  add    %rax,%rdx
  mov    -0x3c(%rbp),%eax
  imul   0x20(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x30(%rbp),%rax
  lea    (%rcx,%rax,1),%rsi
  mov    -0x3c(%rbp),%eax
  imul   0x18(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rcx
  mov    -0x28(%rbp),%rax
  lea    (%rcx,%rax,1),%rdi
  mov    -0x44(%rbp),%r9d
  mov    -0x40(%rbp),%r8d
  mov    -0x3c(%rbp),%eax
  sub    $0x8,%rsp
  mov    0x20(%rbp),%ecx
  push   %rcx
  mov    0x18(%rbp),%ecx
  push   %rcx
  mov    0x10(%rbp),%ecx
  push   %rcx
  mov    %eax,%ecx
  call   <rmsub_stride>
  add    $0x20,%rsp
  mov    -0x3c(%rbp),%eax
  imul   0x20(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x40(%rbp),%eax
  cltq
  add    %rdx,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x38(%rbp),%rax
  add    %rax,%rdx
  mov    -0x3c(%rbp),%eax
  imul   0x20(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x40(%rbp),%eax
  cltq
  add    %rcx,%rax
  lea    0x0(,%rax,4),%rcx
  mov    -0x30(%rbp),%rax
  lea    (%rcx,%rax,1),%rsi
  mov    -0x3c(%rbp),%eax
  imul   0x18(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x40(%rbp),%eax
  cltq
  add    %rcx,%rax
  lea    0x0(,%rax,4),%rcx
  mov    -0x28(%rbp),%rax
  lea    (%rcx,%rax,1),%rdi
  mov    -0x44(%rbp),%r9d
  mov    -0x40(%rbp),%r8d
  mov    -0x3c(%rbp),%eax
  sub    $0x8,%rsp
  mov    0x20(%rbp),%ecx
  push   %rcx
  mov    0x18(%rbp),%ecx
  push   %rcx
  mov    0x10(%rbp),%ecx
  push   %rcx
  mov    %eax,%ecx
  call   <rmsub_stride>
  add    $0x20,%rsp
L54:
  nop
  leave
  ret
```

assistant: ```c
void rmsub_stride(float *A, float *B, float *C, int rows, int cols, int p, int sA, int sB, int sC) {
  int i, j, u, v, w;
  if (rows + cols + p <= 192) {
    for (i = 0; i < rows; ++i) {
      u = i * sC;
      v = i * sA;
      w = i * sB;
      for (j = 0; j < cols; j++) {
        C[j + u] = A[j + v] - B[j + w];
      }
    }
  } else {
    rows /= 2;
    cols /= 2;
    p /= 2;
    rmsub_stride(A, B, C, rows, cols, p, sA, sB, sC);
    rmsub_stride(A + cols, B + cols, C + cols, rows, cols, p, sA, sB, sC);
    rmsub_stride(A + rows * sB, B + rows * sC, C + rows * sC, rows, cols, p, sA, sB, sC);
    rmsub_stride(A + rows * sB + cols, B + rows * sC + cols, C + rows * sC + cols, rows, cols, p, sA, sB, sC);
  }
}
```