user: 请从给定的汇编指令推导出C源代码:

```asm
<narrowbandUnitCostDistanceNoEndPenaltySeq2>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  movslq %ecx,%rbp
  push   %rbx
  sub    $0x28,%rsp
  mov    %r8d,0x1c(%rsp)
  cmp    %ebp,%edx
  jg     L116
  mov    %rdi,%r13
  mov    %rsi,%rbx
  lea    0x1(%rdx),%edi
  mov    $0x8,%esi
  mov    %edx,0x18(%rsp)
  lea    0x1(%rbp),%r12d
  xor    %r14d,%r14d
  call   <calloc@plt>
  mov    0x18(%rsp),%edx
  mov    %rax,0x10(%rsp)
  test   %edx,%edx
  js     L128
  mov    0x18(%rsp),%r15d
  mov    %rbx,(%rsp)
  mov    %rax,%rbx
  nopl   0x0(%rax)
L174:
  mov    $0x4,%esi
  mov    %r12d,%edi
  add    $0x1,%r14d
  add    $0x8,%rbx
  call   <calloc@plt>
  mov    %rax,-0x8(%rbx)
  cmp    %r14d,%r15d
  jge    L174
  mov    (%rsp),%rbx
L128:
  mov    0x1c(%rsp),%edi
  xor    %edx,%edx
  mov    %edi,%eax
  neg    %eax
  test   %edi,%edi
  cmovg  %edx,%eax
  cmp    %edi,%ebp
  movslq %edi,%rdx
  cmovle %rbp,%rdx
  cmp    %eax,%edx
  jl     L124
  mov    0x10(%rsp),%rdi
  cltq
  mov    (%rdi),%rcx
  nopl   0x0(%rax,%rax,1)
L141:
  mov    %eax,(%rcx,%rax,4)
  add    $0x1,%rax
  cmp    %eax,%edx
  jge    L141
L124:
  cmp    %ebp,%edx
  jl     L54
L143:
  mov    0x18(%rsp),%eax
  test   %eax,%eax
  jle    L16
  mov    0x10(%rsp),%rdi
  mov    0x1c(%rsp),%eax
  mov    $0x1,%edx
  mov    %r13,%r11
  mov    %edx,%r12d
  sub    %r13d,%edx
  lea    0x8(%rdi),%r14
  mov    0x18(%rsp),%edi
  sub    %eax,%r12d
  add    $0x1,%eax
  sub    %r13d,%eax
  mov    %edx,0x8(%rsp)
  add    %r12d,%edi
  mov    %eax,0xc(%rsp)
  mov    %edi,(%rsp)
  nopl   (%rax)
L14:
  mov    0x8(%rsp),%eax
  xor    %edx,%edx
  test   %r12d,%r12d
  cmovns %r12d,%edx
  lea    (%rax,%r11,1),%r15d
  mov    0xc(%rsp),%eax
  lea    (%rax,%r11,1),%r8d
  cmp    %ebp,%r8d
  cmovg  %ebp,%r8d
  test   %r12d,%r12d
  jle    L108
  mov    (%r14),%rcx
  movslq %edx,%rax
  movl   $0x3e8,-0x4(%rcx,%rax,4)
L108:
  cmp    %edx,%r8d
  jl     L7
  movslq %edx,%rdx
  mov    (%r14),%r9
  lea    -0x8(%r14),%r13
  lea    0x0(,%rdx,4),%rcx
  jmp    L81
  nopl   0x0(%rax)
L104:
  mov    0x0(%r13),%r10
  mov    -0x4(%r9,%rcx,1),%edi
  movzbl -0x1(%rbx,%rdx,1),%esi
  mov    (%r10,%rcx,1),%eax
  add    $0x1,%edi
  add    $0x1,%eax
  cmp    %sil,(%r11)
  setne  %sil
  movzbl %sil,%esi
  add    -0x4(%r10,%rcx,1),%esi
  cmp    %esi,%eax
  mov    %esi,%r10d
  cmovle %eax,%r10d
  cmp    %edi,%eax
  cmovg  %edi,%eax
  cmp    %esi,%edi
  cmovge %r10d,%eax
  add    $0x1,%rdx
  mov    %eax,(%r9,%rcx,1)
  add    $0x4,%rcx
  cmp    %edx,%r8d
  jl     L7
L81:
  test   %edx,%edx
  jne    L104
  add    $0x1,%rdx
  mov    %r15d,(%r9)
  add    $0x4,%rcx
  cmp    %edx,%r8d
  jge    L81
L7:
  cmp    %ebp,%r8d
  jge    L149
  mov    (%r14),%rax
  movslq %r8d,%r8
  movl   $0x3e8,0x4(%rax,%r8,4)
L149:
  add    $0x1,%r12d
  add    $0x8,%r14
  add    $0x1,%r11
  cmp    (%rsp),%r12d
  jne    L14
L16:
  mov    0x18(%rsp),%ebx
  mov    0x1c(%rsp),%ecx
  mov    $0x0,%edx
  mov    %ebx,%eax
  sub    %ecx,%eax
  cmovs  %edx,%eax
  add    %ebx,%ecx
  movslq %ebx,%rdx
  mov    0x10(%rsp),%rbx
  cmp    %ebp,%ecx
  mov    (%rbx,%rdx,8),%rsi
  cmovg  %ebp,%ecx
  movslq %eax,%rdx
  mov    (%rsi,%rdx,4),%r12d
  lea    0x1(%rax),%edx
  movslq %edx,%rax
  cmp    %edx,%ecx
  jl     L89
  nopl   0x0(%rax,%rax,1)
L133:
  mov    (%rsi,%rax,4),%edx
  cmp    %edx,%r12d
  cmovg  %edx,%r12d
  add    $0x1,%rax
  cmp    %eax,%ecx
  jge    L133
L89:
  mov    0x10(%rsp),%rdi
  call   <free@plt>
L94:
  add    $0x28,%rsp
  mov    %r12d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L54:
  mov    0x10(%rsp),%rax
  mov    (%rax),%rax
  movl   $0x3e8,0x4(%rax,%rdx,4)
  jmp    L143
L116:
  mov    $0xffffffff,%r12d
  jmp    L94
```

assistant: ```c
int narrowbandUnitCostDistanceNoEndPenaltySeq2(char *seq1, char *seq2, int len1, int len2, int maxerr) {
  int **S;
  int score;
  int row, col;
  int match;
  int left, up, diagonal;
  int from, to;
  if (len1 > len2) {
    return (-1);
  }
  S = (int **)calloc((len1 + 1), sizeof(int *));
  for (row = 0; row <= len1; row++) {
    S[row] = (int *)calloc(len2 + 1, sizeof(int));
  }
  row = 0;
  from = row - maxerr;
  to = row + maxerr;
  if (from < 0)
    from = 0;
  if (to > len2)
    to = len2;
  for (col = from; col <= to; col++) {
    S[0][col] = col;
  }
  if (to + 1 <= len2) {
    S[0][to + 1] = 1000;
  }
  for (row = 1; row <= len1; row++) {
    from = row - maxerr;
    to = row + maxerr;
    if (from < 0)
      from = 0;
    if (to > len2)
      to = len2;
    if (from > 0)
      S[row][from - 1] = 1000;
    for (col = from; col <= to; col++) {
      if (col == 0)
        S[row][0] = row;
      else {
        match = (seq1[row - 1] == seq2[col - 1]) ? 0 : 1;
        up = S[row - 1][col] + 1;
        left = S[row][col - 1] + 1;
        diagonal = S[row - 1][col - 1] + match;
        S[row][col] = ((diagonal <= left) ? ((diagonal <= up) ? diagonal : up) : ((left <= up) ? left : up));
      }
    }
    if (to + 1 <= len2) {
      S[row][to + 1] = 1000;
    }
  }
  row = len1;
  from = row - maxerr;
  to = row + maxerr;
  if (from < 0)
    from = 0;
  if (to > len2)
    to = len2;
  score = S[row][from];
  for (col = from + 1; col <= to; col++) {
    if (S[row][col] < score) {
      score = S[row][col];
    }
  }
  free(S);
  return (score);
}
```