user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<direct_svd>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %rdi,%r12
  mov    %esi,%ebp
  mov    %edx,%ebx
  mov    %ecx,0x1c(%rsp)
  mov    %r8,(%rsp)
  mov    %r9,0x8(%rsp)
  cmp    %edx,%esi
  jl     L88
  mov    %esi,%edi
  imul   %edx,%edi
  shl    $0x3,%edi
  call   <malloc@plt>
  mov    %rax,%r13
  mov    %ebx,%edi
  imul   %ebx,%edi
  shl    $0x3,%edi
  call   <malloc@plt>
  mov    %rax,0x10(%rsp)
  lea    0x0(,%rbx,8),%edi
  call   <malloc@plt>
  mov    %rax,%r14
  lea    0x0(,%rbp,8),%edi
  call   <malloc@plt>
  mov    %rax,%r15
  mov    $0x0,%r10d
  mov    $0x0,%r9d
  mov    $0x0,%r8d
  lea    -0x1(%rbx),%edi
  mov    0x1c(%rsp),%r11d
  test   %ebp,%ebp
  jle    L87
L37:
  test   %ebx,%ebx
  jle    L94
  movslq %r9d,%rax
  lea    (%r12,%rax,8),%rsi
  movslq %r10d,%rax
  lea    0x0(%r13,%rax,8),%rcx
  mov    $0x0,%eax
L92:
  movsd  (%rsi,%rax,8),%xmm0
  movsd  %xmm0,(%rcx,%rax,8)
  mov    %rax,%rdx
  add    $0x1,%rax
  cmp    %rdx,%rdi
  jne    L92
L94:
  add    $0x1,%r8d
  add    %r11d,%r9d
  add    %ebx,%r10d
  cmp    %r8d,%ebp
  jne    L37
L87:
  push   %r15
  push   %r14
  mov    %ebx,%r9d
  mov    0x20(%rsp),%r8
  mov    %ebx,%ecx
  mov    %ebx,%edx
  mov    %ebp,%esi
  mov    %r13,%rdi
  call   <relax_svd@plt>
  mov    %eax,%r12d
  push   %r15
  push   0x20(%rsp)
  push   0x20(%rsp)
  push   %r14
  mov    %ebx,%r9d
  mov    0x40(%rsp),%r8
  mov    %ebx,%ecx
  mov    %ebx,%edx
  mov    %ebp,%esi
  mov    %r13,%rdi
  call   <relax_pinvb@plt>
  add    $0x30,%rsp
  mov    %r13,%rdi
  call   <free@plt>
  mov    0x10(%rsp),%rdi
  call   <free@plt>
  mov    %r14,%rdi
  call   <free@plt>
  mov    %r15,%rdi
  call   <free@plt>
L25:
  mov    $0xffffffff,%esi
  lea    D5(%rip),%rdi
  call   <printf@plt>
  mov    %r12d,%eax
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L88:
  mov    %esi,%edi
  imul   %edx,%edi
  shl    $0x3,%edi
  call   <malloc@plt>
  mov    %rax,%r13
  mov    %ebp,%edi
  imul   %ebp,%edi
  shl    $0x3,%edi
  call   <malloc@plt>
  mov    %rax,0x10(%rsp)
  lea    0x0(,%rbp,8),%edi
  call   <malloc@plt>
  mov    %rax,%r15
  lea    0x0(,%rbx,8),%edi
  call   <malloc@plt>
  mov    %rax,%r14
  test   %ebx,%ebx
  jle    L71
  movslq 0x1c(%rsp),%rcx
  shl    $0x3,%rcx
  mov    $0x0,%r8d
  mov    $0x0,%edi
  lea    -0x1(%rbp),%r10d
  lea    0x8(%r13),%r9
L77:
  test   %ebp,%ebp
  jle    L57
  movslq %r8d,%rdx
  lea    0x0(%r13,%rdx,8),%rax
  add    %r10,%rdx
  lea    (%r9,%rdx,8),%rsi
  mov    %r12,%rdx
L22:
  movsd  (%rdx),%xmm0
  movsd  %xmm0,(%rax)
  add    %rcx,%rdx
  add    $0x8,%rax
  cmp    %rsi,%rax
  jne    L22
L57:
  add    $0x1,%edi
  add    $0x8,%r12
  add    %ebp,%r8d
  cmp    %edi,%ebx
  jne    L77
L71:
  push   %r14
  push   %r15
  mov    %ebp,%r9d
  mov    0x20(%rsp),%r8
  mov    %ebp,%ecx
  mov    %ebp,%edx
  mov    %ebx,%esi
  mov    %r13,%rdi
  call   <relax_svd@plt>
  mov    %eax,%r12d
  push   %r14
  push   0x20(%rsp)
  push   0x20(%rsp)
  push   %r15
  mov    %ebp,%r9d
  mov    0x40(%rsp),%r8
  mov    %ebp,%ecx
  mov    %ebp,%edx
  mov    %ebx,%esi
  mov    %r13,%rdi
  call   <relax_pinvtb@plt>
  add    $0x30,%rsp
  mov    %r13,%rdi
  call   <free@plt>
  mov    0x10(%rsp),%rdi
  call   <free@plt>
  mov    %r15,%rdi
  call   <free@plt>
  mov    %r14,%rdi
  call   <free@plt>
  jmp    L25
```

tool_calls: name: read_data
arguments: data_label: D5
type_guessed: string

tool: D5:  iter %7d

assistant: ```c
int direct_svd(double *A, int m, int n, int stride, double *b, double *x0) {
  double *U, *V, *w, *tmpvec;
  int ustride, vstride;
  int err;
  if (m >= n) {
    int i, j;
    ustride = n;
    vstride = n;
    U = malloc(m * ustride * sizeof U[0]);
    V = malloc(n * vstride * sizeof V[0]);
    w = malloc(n * sizeof w[0]);
    tmpvec = malloc(m * sizeof tmpvec[0]);
    for (i = 0; i < m; i++) {
      for (j = 0; j < n; j++)
        U[i * ustride + j] = A[i * stride + j];
      for (; j < ustride; j++)
        U[i * ustride + j] = 0.0;
    }
    err = relax_svd(U, m, n, ustride, V, vstride, w, tmpvec);
    relax_pinvb(U, m, n, ustride, V, vstride, w, b, x0, tmpvec);
    free(U);
    free(V);
    free(w);
    free(tmpvec);
  } else {
    int i, j;
    i = m;
    m = n;
    n = i;
    ustride = n;
    vstride = n;
    U = malloc(m * ustride * sizeof U[0]);
    V = malloc(n * vstride * sizeof V[0]);
    w = malloc(n * sizeof w[0]);
    tmpvec = malloc(m * sizeof tmpvec[0]);
    for (i = 0; i < m; i++) {
      for (j = 0; j < n; j++)
        U[i * ustride + j] = A[j * stride + i];
      for (; j < ustride; j++)
        U[i * ustride + j] = 0.0;
    }
    err = relax_svd(U, m, n, ustride, V, vstride, w, tmpvec);
    relax_pinvtb(U, m, n, ustride, V, vstride, w, b, x0, tmpvec);
    free(U);
    free(V);
    free(w);
    free(tmpvec);
  }
  printf(" iter %7d", -1);
  return err;
}
```