user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<step3_lng>:
  endbr64
  push   %r15
  mov    %rsi,%r10
  push   %r14
  mov    %r8,%r14
  push   %r13
  push   %r12
  mov    %rdx,%r12
  push   %rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    0x78(%rsp),%rax
  mov    0x68(%rsp),%r11
  mov    %rdi,0x8(%rsp)
  mov    %rcx,0x10(%rsp)
  mov    0x70(%rsp),%rdi
  mov    %rax,0x18(%rsp)
  mov    0x60(%rsp),%rcx
  cmp    $0x1,%r11
  jne    L55
L217:
  xor    %eax,%eax
  xor    %esi,%esi
  jmp    L359
  xchg   %ax,%ax
L240:
  add    $0x1,%rax
L359:
  cmp    %rax,%rdi
  jle    L52
L168:
  mov    (%r9,%rax,4),%ebp
  test   %ebp,%ebp
  jne    L240
  mov    (%rcx),%ebx
  test   %ebx,%ebx
  jne    L240
  mov    (%r10,%rax,8),%rdx
  test   %rdx,%rdx
  jne    L240
  movl   $0x1,(%r14,%rax,4)
  test   %rdi,%rdi
  jle    L243
  xor    %esi,%esi
  jmp    L185
  nopl   0x0(%rax)
L248:
  add    $0x1,%rsi
  cmp    %rsi,%rdi
  je     L86
L185:
  mov    (%r12,%rsi,4),%r8d
  test   %r8d,%r8d
  je     L248
  add    $0x1,%rax
  movl   $0x1,(%rcx)
  movl   $0x0,(%r9,%rsi,4)
  mov    $0x1,%esi
  cmp    %rax,%rdi
  jg     L168
  jmp    L217
  nopl   0x0(%rax,%rax,1)
L52:
  test   %esi,%esi
  je     L161
  test   %rdi,%rdi
  jle    L161
  xor    %eax,%eax
  xor    %esi,%esi
  jmp    L168
L243:
  je     L86
  movl   $0x1,(%rcx)
  movl   $0x0,(%r9)
  jmp    L217
  nopl   0x0(%rax,%rax,1)
L86:
  push   %rax
  mov    %r14,%r8
  mov    %r10,%rsi
  push   %rdx
  mov    %r12,%rdx
  push   0x28(%rsp)
  push   %rdi
  push   %r11
  push   %rcx
  mov    0x40(%rsp),%rcx
  mov    0x38(%rsp),%rdi
  call   <step4_lng@plt>
  add    $0x58,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L161:
  mov    0x18(%rsp),%rax
  mov    %rdi,0x70(%rsp)
  mov    %r14,%r8
  mov    %r12,%rdx
  mov    %rcx,0x60(%rsp)
  mov    0x8(%rsp),%rdi
  mov    %r10,%rsi
  mov    %rax,0x78(%rsp)
  mov    0x10(%rsp),%rcx
  mov    %r11,0x68(%rsp)
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  jmp    1070 <step5_lng@plt>
L55:
  lea    0x0(,%r11,4),%r13
L173:
  xor    %eax,%eax
  xor    %r15d,%r15d
  jmp    L197
  nopw   0x0(%rax,%rax,1)
L325:
  add    $0x1,%rax
L197:
  cmp    %rdi,%rax
  jge    L40
L70:
  mov    %rax,%r8
  imul   %r11,%r8
L273:
  mov    (%r9,%rax,4),%edx
  test   %edx,%edx
  jne    L325
  test   %r11,%r11
  jle    L325
  mov    %rcx,%rsi
  lea    (%r10,%r8,8),%rbx
  xor    %edx,%edx
  jmp    L306
  nopl   0x0(%rax)
L94:
  add    $0x1,%rdx
  add    $0x4,%rsi
  cmp    %rdx,%r11
  je     L325
L306:
  mov    (%rsi),%ebp
  test   %ebp,%ebp
  jne    L94
  cmpq   $0x0,(%rbx,%rdx,8)
  lea    (%rdx,%r8,1),%rbp
  jne    L94
  movl   $0x1,(%r14,%rbp,4)
  test   %rdi,%rdi
  jle    L205
  lea    (%r12,%rdx,4),%rbp
  xor    %ebx,%ebx
  jmp    L262
  nopl   0x0(%rax,%rax,1)
L41:
  add    $0x1,%rbx
  add    %r13,%rbp
  cmp    %rbx,%rdi
  je     L86
L262:
  mov    0x0(%rbp),%r15d
  test   %r15d,%r15d
  je     L41
  add    $0x1,%rax
  movl   $0x1,(%rsi)
  add    %r11,%r8
  mov    $0x1,%r15d
  movl   $0x0,(%r9,%rbx,4)
  cmp    %rdi,%rax
  jl     L273
  jmp    L173
  nopw   0x0(%rax,%rax,1)
L40:
  test   %r15d,%r15d
  je     L161
  test   %rdi,%rdi
  jle    L161
  xor    %eax,%eax
  xor    %r15d,%r15d
  jmp    L70
L205:
  je     L86
  movl   $0x1,(%rsi)
  xor    %eax,%eax
  xor    %r15d,%r15d
  movl   $0x0,(%r9)
  jmp    L197
```

assistant: ```c
void step3_lng(long *assignment, long *distMatrix, bool *starMatrix, bool *newStarMatrix, bool *primeMatrix, bool *coveredColumns, bool *coveredRows, long nOfRows, long nOfColumns, long minDim) {
  bool zerosFound;
  long row, col, starCol;
  zerosFound = true;
  while (zerosFound) {
    zerosFound = false;
    for (col = 0; col < nOfColumns; col++)
      if (!coveredColumns[col])
        for (row = 0; row < nOfRows; row++)
          if ((!coveredRows[row]) && (distMatrix[row + nOfRows * col] == 0)) {
            primeMatrix[row + nOfRows * col] = true;
            for (starCol = 0; starCol < nOfColumns; starCol++)
              if (starMatrix[row + nOfRows * starCol])
                break;
            if (starCol == nOfColumns) {
              step4_lng(assignment, distMatrix, starMatrix, newStarMatrix, primeMatrix, coveredColumns, coveredRows, nOfRows, nOfColumns, minDim, row, col);
              return;
            } else {
              coveredRows[row] = true;
              coveredColumns[starCol] = false;
              zerosFound = true;
              break;
            }
          }
  }
  step5_lng(assignment, distMatrix, starMatrix, newStarMatrix, primeMatrix, coveredColumns, coveredRows, nOfRows, nOfColumns, minDim);
}
```