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

```asm
<svdbacksub>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0xb0,%rsp
  mov    %rdi,-0x88(%rbp)
  mov    %rsi,-0x90(%rbp)
  mov    %rdx,-0x98(%rbp)
  mov    %rcx,-0xa0(%rbp)
  mov    %r8,-0xa8(%rbp)
  mov    %r9d,-0xac(%rbp)
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  cmpl   $0xa,0x10(%rbp)
  jg     L3
  lea    -0x60(%rbp),%rax
  mov    %rax,-0x78(%rbp)
  jmp    L136
L3:
  mov    0x10(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,%esi
  mov    $0x0,%edi
  call   <dvector@plt>
  mov    %rax,-0x78(%rbp)
L136:
  movl   $0x0,-0x7c(%rbp)
  jmp    L144
L1:
  mov    -0x7c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x90(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  pxor   %xmm1,%xmm1
  ucomisd %xmm1,%xmm0
  jp     L104
  pxor   %xmm1,%xmm1
  ucomisd %xmm1,%xmm0
  je     L117
L104:
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x70(%rbp)
  movl   $0x0,-0x80(%rbp)
  jmp    L21
L38:
  mov    -0x80(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0xa0(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm1
  mov    -0x80(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x88(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rdx
  mov    -0x7c(%rbp),%eax
  cltq
  shl    $0x3,%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  %xmm1,%xmm0
  movsd  -0x70(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x70(%rbp)
  addl   $0x1,-0x80(%rbp)
L21:
  mov    -0x80(%rbp),%eax
  cmp    -0xac(%rbp),%eax
  jl     L38
  mov    -0x7c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x90(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm1
  movsd  -0x70(%rbp),%xmm0
  divsd  %xmm1,%xmm0
  movsd  %xmm0,-0x70(%rbp)
  mov    -0x7c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x78(%rbp),%rax
  add    %rdx,%rax
  movsd  -0x70(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  jmp    L108
L117:
  mov    -0x7c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x78(%rbp),%rax
  add    %rdx,%rax
  pxor   %xmm0,%xmm0
  movsd  %xmm0,(%rax)
L108:
  addl   $0x1,-0x7c(%rbp)
L144:
  mov    -0x7c(%rbp),%eax
  cmp    0x10(%rbp),%eax
  jl     L1
  movl   $0x0,-0x7c(%rbp)
  jmp    L24
L39:
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x68(%rbp)
  movl   $0x0,-0x80(%rbp)
  jmp    L17
L148:
  mov    -0x7c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x98(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%rdx
  mov    -0x80(%rbp),%eax
  cltq
  shl    $0x3,%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm1
  mov    -0x80(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x78(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mulsd  %xmm1,%xmm0
  movsd  -0x68(%rbp),%xmm1
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x68(%rbp)
  addl   $0x1,-0x80(%rbp)
L17:
  mov    -0x80(%rbp),%eax
  cmp    0x10(%rbp),%eax
  jl     L148
  mov    -0x7c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0xa8(%rbp),%rax
  add    %rdx,%rax
  movsd  -0x68(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  addl   $0x1,-0x7c(%rbp)
L24:
  mov    -0x7c(%rbp),%eax
  cmp    0x10(%rbp),%eax
  jl     L39
  lea    -0x60(%rbp),%rax
  cmp    %rax,-0x78(%rbp)
  je     L36
  mov    0x10(%rbp),%eax
  lea    -0x1(%rax),%edx
  mov    -0x78(%rbp),%rax
  mov    $0x0,%esi
  mov    %rax,%rdi
  call   <free_dvector@plt>
L36:
  mov    $0x0,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L132
  call   <__stack_chk_fail@plt>
L132:
  leave
  ret
```

assistant: ```c
int svdbacksub(double **u, double *w, double **v, double b[], double x[], int m, int n) {
  int i, j;
  double *tmp, TMP[10];
  if (n <= 10)
    tmp = TMP;
  else
    tmp = dvector(0, n - 1);
  for (j = 0; j < n; j++) {
    if (w[j]) {
      double s;
      for (s = 0.0, i = 0; i < m; i++)
        s += b[i] * u[i][j];
      s /= w[j];
      tmp[j] = s;
    } else {
      tmp[j] = 0.0;
    }
  }
  for (j = 0; j < n; j++) {
    double s;
    for (s = 0.0, i = 0; i < n; i++)
      s += v[j][i] * tmp[i];
    x[j] = s;
  }
  if (tmp != TMP)
    free_dvector(tmp, 0, n - 1);
  return 0;
}
```