user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<qrbdu1>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0xa0,%rsp
  mov    %rdi,-0x78(%rbp)
  mov    %rsi,-0x80(%rbp)
  mov    %rdx,-0x88(%rbp)
  mov    %ecx,-0x8c(%rbp)
  mov    %r8,-0x98(%rbp)
  mov    %r9d,-0x90(%rbp)
  movl   $0x1,-0x6c(%rbp)
  mov    -0x78(%rbp),%rax
  movsd  (%rax),%xmm0
  movq   D58(%rip),%xmm1
  andpd  %xmm1,%xmm0
  movsd  %xmm0,-0x30(%rbp)
  jmp    L248
L268:
  mov    -0x6c(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x78(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movq   D58(%rip),%xmm1
  andpd  %xmm0,%xmm1
  mov    -0x6c(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movq   D58(%rip),%xmm2
  andpd  %xmm2,%xmm0
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x38(%rbp)
  movsd  -0x38(%rbp),%xmm0
  comisd -0x30(%rbp),%xmm0
  jbe    L207
  movsd  -0x38(%rbp),%xmm0
  movsd  %xmm0,-0x30(%rbp)
L207:
  addl   $0x1,-0x6c(%rbp)
L248:
  mov    -0x6c(%rbp),%eax
  cmp    -0x90(%rbp),%eax
  jl     L268
  movsd  -0x30(%rbp),%xmm1
  movsd  D39(%rip),%xmm0
  mulsd  %xmm1,%xmm0
  movsd  %xmm0,-0x30(%rbp)
  mov    -0x90(%rbp),%eax
  imul   $0x64,%eax,%eax
  mov    %eax,-0x60(%rbp)
  mov    -0x90(%rbp),%eax
  mov    %eax,-0x5c(%rbp)
  movl   $0x0,-0x6c(%rbp)
  jmp    L255
L95:
  mov    -0x90(%rbp),%eax
  sub    $0x1,%eax
  mov    %eax,-0x68(%rbp)
  jmp    L270
L72:
  mov    -0x68(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movq   D58(%rip),%xmm1
  andpd  %xmm0,%xmm1
  movsd  -0x30(%rbp),%xmm0
  comisd %xmm1,%xmm0
  ja     L233
  mov    -0x68(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x78(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movq   D58(%rip),%xmm1
  andpd  %xmm0,%xmm1
  movsd  -0x30(%rbp),%xmm0
  comisd %xmm1,%xmm0
  jbe    L26
  mov    -0x68(%rbp),%eax
  mov    %eax,-0x70(%rbp)
  movsd  D18(%rip),%xmm0
  movsd  %xmm0,-0x38(%rbp)
  pxor   %xmm0,%xmm0
  movsd  %xmm0,-0x40(%rbp)
  jmp    L244
L18:
  mov    -0x70(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  -0x38(%rbp),%xmm1
  mulsd  %xmm1,%xmm0
  movsd  %xmm0,-0x20(%rbp)
  mov    -0x70(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x78(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x48(%rbp)
  mov    -0x70(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  mov    -0x70(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  mulsd  -0x40(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  movsd  -0x20(%rbp),%xmm0
  movapd %xmm0,%xmm1
  mulsd  %xmm0,%xmm1
  movsd  -0x48(%rbp),%xmm0
  mulsd  %xmm0,%xmm0
  addsd  %xmm0,%xmm1
  movq   %xmm1,%rax
  movq   %rax,%xmm0
  call   <sqrt@plt>
  movq   %xmm0,%rax
  mov    %rax,-0x18(%rbp)
  mov    -0x70(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x78(%rbp),%rax
  add    %rdx,%rax
  movsd  -0x18(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  movsd  -0x20(%rbp),%xmm0
  movq   D7(%rip),%xmm1
  xorpd  %xmm1,%xmm0
  divsd  -0x18(%rbp),%xmm0
  movsd  %xmm0,-0x38(%rbp)
  movsd  -0x48(%rbp),%xmm0
  divsd  -0x18(%rbp),%xmm0
  movsd  %xmm0,-0x40(%rbp)
  movl   $0x0,-0x64(%rbp)
  mov    -0x68(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x88(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x28(%rbp)
  jmp    L19
L142:
  mov    -0x70(%rbp),%eax
  cltq
  mov    -0x68(%rbp),%edx
  movslq %edx,%rdx
  sub    %rdx,%rax
  add    $0x1,%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x28(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x10(%rbp)
  mov    -0x28(%rbp),%rax
  movsd  (%rax),%xmm0
  movapd %xmm0,%xmm1
  mulsd  -0x40(%rbp),%xmm1
  mov    -0x10(%rbp),%rax
  movsd  (%rax),%xmm0
  mulsd  -0x38(%rbp),%xmm0
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x8(%rbp)
  mov    -0x10(%rbp),%rax
  movsd  (%rax),%xmm0
  mulsd  -0x40(%rbp),%xmm0
  mov    -0x28(%rbp),%rax
  movsd  (%rax),%xmm1
  mulsd  -0x38(%rbp),%xmm1
  subsd  %xmm1,%xmm0
  mov    -0x10(%rbp),%rax
  movsd  %xmm0,(%rax)
  mov    -0x28(%rbp),%rax
  movsd  -0x8(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  addl   $0x1,-0x64(%rbp)
  mov    -0x5c(%rbp),%eax
  cltq
  shl    $0x3,%rax
  add    %rax,-0x28(%rbp)
L19:
  mov    -0x64(%rbp),%eax
  cmp    -0x8c(%rbp),%eax
  jl     L142
  addl   $0x1,-0x70(%rbp)
L244:
  mov    -0x70(%rbp),%eax
  cmp    -0x90(%rbp),%eax
  jl     L18
  jmp    L8
L26:
  subl   $0x1,-0x68(%rbp)
L270:
  cmpl   $0x0,-0x68(%rbp)
  jg     L72
  jmp    L8
L233:
  nop
L8:
  mov    -0x68(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x78(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x50(%rbp)
  mov    -0x90(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x78(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x58(%rbp)
  mov    -0x90(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x10(%rax),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x18(%rbp)
  movsd  -0x50(%rbp),%xmm0
  movapd %xmm0,%xmm1
  addsd  -0x58(%rbp),%xmm1
  movsd  -0x50(%rbp),%xmm0
  subsd  -0x58(%rbp),%xmm0
  mulsd  %xmm0,%xmm1
  movsd  -0x18(%rbp),%xmm0
  movapd %xmm0,%xmm2
  mulsd  %xmm0,%xmm2
  subsd  %xmm2,%xmm1
  movapd %xmm1,%xmm0
  movsd  %xmm0,-0x20(%rbp)
  mov    -0x68(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  -0x50(%rbp),%xmm1
  mulsd  %xmm1,%xmm0
  movsd  %xmm0,-0x38(%rbp)
  movsd  -0x38(%rbp),%xmm0
  addsd  %xmm0,%xmm0
  movsd  %xmm0,-0x48(%rbp)
  movsd  -0x20(%rbp),%xmm0
  movapd %xmm0,%xmm1
  mulsd  %xmm0,%xmm1
  movsd  -0x48(%rbp),%xmm0
  mulsd  %xmm0,%xmm0
  addsd  %xmm0,%xmm1
  movq   %xmm1,%rax
  movq   %rax,%xmm0
  call   <sqrt@plt>
  movq   %xmm0,%rax
  mov    %rax,-0x18(%rbp)
  movsd  -0x18(%rbp),%xmm0
  pxor   %xmm1,%xmm1
  comisd %xmm1,%xmm0
  jbe    L21
  movsd  -0x18(%rbp),%xmm0
  movapd %xmm0,%xmm1
  addsd  -0x20(%rbp),%xmm1
  movsd  -0x18(%rbp),%xmm0
  addsd  %xmm0,%xmm0
  divsd  %xmm0,%xmm1
  movq   %xmm1,%rax
  movq   %rax,%xmm0
  call   <sqrt@plt>
  movq   %xmm0,%rax
  mov    %rax,-0x40(%rbp)
  pxor   %xmm0,%xmm0
  ucomisd -0x40(%rbp),%xmm0
  jp     L90
  pxor   %xmm0,%xmm0
  ucomisd -0x40(%rbp),%xmm0
  je     L135
L90:
  movsd  -0x40(%rbp),%xmm0
  movapd %xmm0,%xmm1
  mulsd  -0x18(%rbp),%xmm1
  movsd  -0x38(%rbp),%xmm0
  divsd  %xmm1,%xmm0
  movsd  %xmm0,-0x38(%rbp)
  jmp    L204
L135:
  movsd  D18(%rip),%xmm0
  movsd  %xmm0,-0x38(%rbp)
L204:
  mov    -0x68(%rbp),%eax
  mov    %eax,-0x70(%rbp)
  jmp    L125
L3:
  mov    -0x70(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  %xmm0,-0x48(%rbp)
  mov    -0x70(%rbp),%eax
  cmp    -0x68(%rbp),%eax
  jle    L97
  mov    -0x70(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  -0x38(%rbp),%xmm1
  mulsd  %xmm1,%xmm0
  movsd  %xmm0,-0x20(%rbp)
  movsd  -0x48(%rbp),%xmm0
  mulsd  -0x40(%rbp),%xmm0
  movsd  %xmm0,-0x48(%rbp)
  movsd  -0x58(%rbp),%xmm0
  movapd %xmm0,%xmm1
  mulsd  %xmm0,%xmm1
  movsd  -0x20(%rbp),%xmm0
  mulsd  %xmm0,%xmm0
  addsd  %xmm0,%xmm1
  movq   %xmm1,%rax
  movq   %rax,%xmm0
  call   <sqrt@plt>
  movq   %xmm0,%rax
  mov    %rax,-0x18(%rbp)
  mov    -0x70(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  -0x18(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  movsd  -0x58(%rbp),%xmm0
  divsd  -0x18(%rbp),%xmm0
  movsd  %xmm0,-0x40(%rbp)
  movsd  -0x20(%rbp),%xmm0
  divsd  -0x18(%rbp),%xmm0
  movsd  %xmm0,-0x38(%rbp)
L97:
  movsd  -0x40(%rbp),%xmm0
  movapd %xmm0,%xmm1
  mulsd  -0x50(%rbp),%xmm1
  movsd  -0x38(%rbp),%xmm0
  mulsd  -0x48(%rbp),%xmm0
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x20(%rbp)
  movsd  -0x40(%rbp),%xmm0
  mulsd  -0x48(%rbp),%xmm0
  movsd  -0x38(%rbp),%xmm1
  mulsd  -0x50(%rbp),%xmm1
  subsd  %xmm1,%xmm0
  movsd  %xmm0,-0x48(%rbp)
  movl   $0x0,-0x64(%rbp)
  mov    -0x70(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x98(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x28(%rbp)
  jmp    L159
L67:
  mov    -0x28(%rbp),%rax
  movsd  (%rax),%xmm0
  movapd %xmm0,%xmm1
  mulsd  -0x40(%rbp),%xmm1
  mov    -0x28(%rbp),%rax
  add    $0x8,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x38(%rbp),%xmm0
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x8(%rbp)
  mov    -0x28(%rbp),%rax
  add    $0x8,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x40(%rbp),%xmm0
  mov    -0x28(%rbp),%rax
  movsd  (%rax),%xmm1
  mulsd  -0x38(%rbp),%xmm1
  mov    -0x28(%rbp),%rax
  add    $0x8,%rax
  subsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x28(%rbp),%rax
  movsd  -0x8(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  addl   $0x1,-0x64(%rbp)
  mov    -0x5c(%rbp),%eax
  cltq
  shl    $0x3,%rax
  add    %rax,-0x28(%rbp)
L159:
  mov    -0x64(%rbp),%eax
  cmp    -0x5c(%rbp),%eax
  jl     L67
  mov    -0x70(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x78(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  -0x38(%rbp),%xmm1
  mulsd  %xmm1,%xmm0
  movsd  %xmm0,-0x38(%rbp)
  movsd  -0x20(%rbp),%xmm0
  movapd %xmm0,%xmm1
  mulsd  %xmm0,%xmm1
  movsd  -0x38(%rbp),%xmm0
  mulsd  %xmm0,%xmm0
  addsd  %xmm0,%xmm1
  movq   %xmm1,%rax
  movq   %rax,%xmm0
  call   <sqrt@plt>
  movq   %xmm0,%rax
  mov    %rax,-0x18(%rbp)
  mov    -0x70(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x78(%rbp),%rax
  add    %rdx,%rax
  movsd  -0x18(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x70(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,8),%rdx
  mov    -0x78(%rbp),%rax
  add    %rdx,%rax
  movsd  (%rax),%xmm0
  movsd  -0x40(%rbp),%xmm1
  mulsd  %xmm1,%xmm0
  movsd  %xmm0,-0x50(%rbp)
  movsd  -0x20(%rbp),%xmm0
  divsd  -0x18(%rbp),%xmm0
  movsd  %xmm0,-0x40(%rbp)
  movsd  -0x38(%rbp),%xmm0
  divsd  -0x18(%rbp),%xmm0
  movsd  %xmm0,-0x38(%rbp)
  movsd  -0x40(%rbp),%xmm0
  movapd %xmm0,%xmm1
  mulsd  -0x48(%rbp),%xmm1
  movsd  -0x38(%rbp),%xmm0
  mulsd  -0x50(%rbp),%xmm0
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x58(%rbp)
  movsd  -0x40(%rbp),%xmm0
  mulsd  -0x50(%rbp),%xmm0
  movsd  -0x38(%rbp),%xmm1
  mulsd  -0x48(%rbp),%xmm1
  subsd  %xmm1,%xmm0
  movsd  %xmm0,-0x50(%rbp)
  movl   $0x0,-0x64(%rbp)
  mov    -0x70(%rbp),%eax
  cltq
  lea    0x0(,%rax,8),%rdx
  mov    -0x88(%rbp),%rax
  add    %rdx,%rax
  mov    %rax,-0x28(%rbp)
  jmp    L287
L283:
  mov    -0x28(%rbp),%rax
  movsd  (%rax),%xmm0
  movapd %xmm0,%xmm1
  mulsd  -0x40(%rbp),%xmm1
  mov    -0x28(%rbp),%rax
  add    $0x8,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x38(%rbp),%xmm0
  addsd  %xmm1,%xmm0
  movsd  %xmm0,-0x8(%rbp)
  mov    -0x28(%rbp),%rax
  add    $0x8,%rax
  movsd  (%rax),%xmm0
  mulsd  -0x40(%rbp),%xmm0
  mov    -0x28(%rbp),%rax
  movsd  (%rax),%xmm1
  mulsd  -0x38(%rbp),%xmm1
  mov    -0x28(%rbp),%rax
  add    $0x8,%rax
  subsd  %xmm1,%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x28(%rbp),%rax
  movsd  -0x8(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  addl   $0x1,-0x64(%rbp)
  mov    -0x5c(%rbp),%eax
  cltq
  shl    $0x3,%rax
  add    %rax,-0x28(%rbp)
L287:
  mov    -0x64(%rbp),%eax
  cmp    -0x8c(%rbp),%eax
  jl     L283
  addl   $0x1,-0x70(%rbp)
L125:
  mov    -0x90(%rbp),%eax
  sub    $0x1,%eax
  cmp    %eax,-0x70(%rbp)
  jl     L3
L21:
  mov    -0x90(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x10(%rax),%rdx
  mov    -0x80(%rbp),%rax
  add    %rdx,%rax
  movsd  -0x58(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  mov    -0x90(%rbp),%eax
  cltq
  shl    $0x3,%rax
  lea    -0x8(%rax),%rdx
  mov    -0x78(%rbp),%rax
  add    %rdx,%rax
  movsd  -0x50(%rbp),%xmm0
  movsd  %xmm0,(%rax)
  movsd  -0x58(%rbp),%xmm0
  movq   D58(%rip),%xmm1
  andpd  %xmm0,%xmm1
  movsd  -0x30(%rbp),%xmm0
  comisd %xmm1,%xmm0
  jbe    L240
  subl   $0x1,-0x90(%rbp)
L240:
  mov    -0x68(%rbp),%eax
  add    $0x1,%eax
  cmp    %eax,-0x90(%rbp)
  jne    L242
  subl   $0x1,-0x90(%rbp)
L242:
  addl   $0x1,-0x6c(%rbp)
L255:
  cmpl   $0x1,-0x90(%rbp)
  jle    L166
  mov    -0x6c(%rbp),%eax
  cmp    -0x60(%rbp),%eax
  jl     L95
L166:
  mov    -0x6c(%rbp),%eax
  leave
  ret
```

tool_calls: name: extract_symbolic_data
arguments: data_label: D58
type_guessed: qword
name: extract_symbolic_data
arguments: data_label: D39
type_guessed: byte[8]
name: extract_symbolic_data
arguments: data_label: D18
type_guessed: f64
name: extract_symbolic_data
arguments: data_label: D7
type_guessed: f32[2]

tool: D58: 9223372036854775807

tool: {"D39": [0x16,0x56,0xe7,0x9e,0xaf,0x03,0xd2,0x3c]}

tool: D18: 1

tool: {"D7": [0.0,-0.0]}

assistant: ```c
int qrbdu1(double *dm, double *em, double *um, int mm, double *vm, int m) {
  int i, j, k, n, jj, nm;
  double u, x, y, a, b, c, s, t, w, *p, *q;
  for (j = 1, t = fabs(dm[0]); j < m; ++j)
    if ((s = fabs(dm[j]) + fabs(em[j - 1])) > t)
      t = s;
  t *= 1.e-15;
  n = 100 * m;
  nm = m;
  for (j = 0; m > 1 && j < n; ++j) {
    for (k = m - 1; k > 0; --k) {
      if (fabs(em[k - 1]) < t)
        break;
      if (fabs(dm[k - 1]) < t) {
        for (i = k, s = 1., c = 0.; i < m; ++i) {
          a = s * em[i - 1];
          b = dm[i];
          em[i - 1] *= c;
          dm[i] = u = sqrt(a * a + b * b);
          s = -a / u;
          c = b / u;
          for (jj = 0, p = um + k - 1; jj < mm; ++jj, p += nm) {
            q = p + i - k + 1;
            w = c * *p + s * *q;
            *q = c * *q - s * *p;
            *p = w;
          }
        }
        break;
      }
    }
    y = dm[k];
    x = dm[m - 1];
    u = em[m - 2];
    a = (y + x) * (y - x) - u * u;
    s = y * em[k];
    b = s + s;
    u = sqrt(a * a + b * b);
    if (u > 0.) {
      c = sqrt((u + a) / (u + u));
      if (c != 0.)
        s /= (c * u);
      else
        s = 1.;
      for (i = k; i < m - 1; ++i) {
        b = em[i];
        if (i > k) {
          a = s * em[i];
          b *= c;
          em[i - 1] = u = sqrt(x * x + a * a);
          c = x / u;
          s = a / u;
        }
        a = c * y + s * b;
        b = c * b - s * y;
        for (jj = 0, p = vm + i; jj < nm; ++jj, p += nm) {
          w = c * *p + s * *(p + 1);
          *(p + 1) = c * *(p + 1) - s * *p;
          *p = w;
        }
        s *= dm[i + 1];
        dm[i] = u = sqrt(a * a + s * s);
        y = c * dm[i + 1];
        c = a / u;
        s /= u;
        x = c * b + s * y;
        y = c * y - s * b;
        for (jj = 0, p = um + i; jj < mm; ++jj, p += nm) {
          w = c * *p + s * *(p + 1);
          *(p + 1) = c * *(p + 1) - s * *p;
          *p = w;
        }
      }
    }
    em[m - 2] = x;
    dm[m - 1] = y;
    if (fabs(x) < t)
      --m;
    if (m == k + 1)
      --m;
  }
  return j;
}
```