user: Demonstrate the C code that generates the assembly output below:

```asm
<narrowbandUnitCostDistanceNoEndPenaltySeq2LowMem>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x48,%rsp
  mov    %rdi,0x8(%rsp)
  mov    %edx,0x34(%rsp)
  mov    %r8d,0x24(%rsp)
  mov    %ecx,0x20(%rsp)
  cmp    %ecx,%edx
  jg     L213
  mov    %rsi,%r15
  mov    %edx,%ebx
  mov    %r8d,%r14d
  lea    0x1(%rdx),%edi
  movslq %edi,%rdi
  mov    $0x8,%esi
  call   <calloc@plt>
  mov    %rax,0x28(%rsp)
  mov    %ebx,%ecx
  test   %ebx,%ebx
  js     L224
  mov    %r14d,%ebx
  neg    %ebx
  mov    %r14d,%r12d
  mov    %rax,%rbp
  mov    %ecx,%eax
  sub    %r14d,%eax
  lea    0x1(%rax),%r14d
  mov    $0x0,%r13d
  mov    %r15,(%rsp)
  mov    0x20(%rsp),%r15d
  jmp    L380
L23:
  sub    %edx,%eax
  lea    0x1(%rsi,%rax,1),%edi
  add    %ecx,%edi
  movslq %edi,%rdi
  mov    $0x4,%esi
  call   <calloc@plt>
  mov    %rax,0x0(%rbp)
  add    $0x1,%ebx
  add    $0x1,%r12d
  add    $0x8,%rbp
  cmp    %r14d,%ebx
  je     L143
L380:
  mov    %r12d,%eax
  test   %ebx,%ebx
  setg   %sil
  movzbl %sil,%esi
  mov    $0x0,%edx
  cmovns %ebx,%edx
  mov    $0x1,%ecx
  cmp    %r12d,%r15d
  jg     L23
  mov    %r15d,%eax
  mov    %r13d,%ecx
  jmp    L23
L143:
  mov    (%rsp),%r15
L224:
  cmpl   $0x0,0x24(%rsp)
  js     L301
  mov    0x24(%rsp),%ebx
  cmp    %ebx,0x20(%rsp)
  jle    L160
  mov    0x24(%rsp),%eax
  lea    0x1(%rax),%edx
  mov    $0x1,%esi
  movl   $0x0,(%rsp)
  mov    $0x0,%eax
  jmp    L62
L265:
  movl   $0x1,(%rsp)
  jmp    L182
L206:
  cmp    %r13d,0x20(%rsp)
  jle    L104
  add    $0x1,%r8d
  movl   $0x1,0x1c(%rsp)
  mov    $0x0,%ebp
  movl   $0x0,0x18(%rsp)
  jmp    L250
L322:
  mov    -0x8(%r10),%rbp
  mov    (%rsp),%edi
  lea    (%rax,%rdi,1),%edx
  movslq %edx,%rdx
  mov    0x0(%rbp,%rdx,4),%edx
  add    $0x1,%edx
  mov    (%r10),%r11
  mov    -0x4(%r11,%rcx,1),%edi
  add    $0x1,%edi
  mov    0x8(%rsp),%esi
  add    %eax,%esi
  movslq %esi,%rsi
  movzbl (%r12),%r9d
  cmp    %r9b,-0x1(%rbx,%rsi,1)
  setne  %sil
  movzbl %sil,%esi
  mov    0x14(%rsp),%r9d
  add    %eax,%r9d
  movslq %r9d,%r9
  add    0x0(%rbp,%r9,4),%esi
  cmp    %esi,%edx
  mov    %esi,%r9d
  cmovle %edx,%r9d
  cmp    %edi,%edx
  cmovg  %edi,%edx
  cmp    %esi,%edi
  cmovge %r9d,%edx
  mov    %edx,(%r11,%rcx,1)
L325:
  add    $0x1,%eax
  add    $0x4,%rcx
  cmp    %r8d,%eax
  je     L203
L293:
  test   %eax,%eax
  jne    L322
  mov    (%r10),%rdx
  mov    %r14d,(%rdx)
  jmp    L325
L203:
  cmpl   $0x0,0x1c(%rsp)
  je     L179
  add    $0x1,%r8d
  movslq %r8d,%r8
  mov    (%r10),%rax
  movl   $0x3e8,-0x4(%rax,%r8,4)
L179:
  add    $0x1,%r15d
  add    $0x1,%r13d
  add    $0x1,%r12
  add    $0x8,%r10
  cmp    0x30(%rsp),%r13d
  je     L47
  mov    0x18(%rsp),%eax
  mov    %eax,(%rsp)
L158:
  mov    0x24(%rsp),%eax
  lea    (%r15,%rax,1),%r14d
  mov    %r15d,%ebp
  mov    %r13d,%r8d
  test   %r15d,%r15d
  jle    L206
  cmp    %r13d,0x20(%rsp)
  jle    L89
  sub    %r15d,%r8d
  add    $0x1,%r8d
  movl   $0x1,0x1c(%rsp)
  jmp    L183
L47:
  mov    0x34(%rsp),%ebx
  mov    %ebx,%eax
  mov    0x24(%rsp),%ecx
  sub    %ecx,%eax
  add    %ebx,%ecx
  mov    %ecx,%edx
  mov    $0x1,%edi
  test   %eax,%eax
  jle    L404
L127:
  mov    $0x0,%esi
  cmp    %edx,0x20(%rsp)
  jle    L243
  mov    %edx,0x20(%rsp)
  mov    $0x1,%esi
L243:
  movslq 0x34(%rsp),%rdx
  mov    0x28(%rsp),%rbx
  mov    (%rbx,%rdx,8),%rcx
  mov    (%rcx),%ebp
  mov    0x20(%rsp),%edx
  sub    %eax,%edx
  lea    0x1(%rdi,%rdx,1),%edx
  add    %esi,%edx
  cmp    $0x1,%edx
  jle    L388
  lea    0x4(%rcx),%rax
  lea    -0x2(%rdx),%edx
  lea    0x8(%rcx,%rdx,4),%rcx
L132:
  mov    (%rax),%edx
  cmp    %edx,%ebp
  cmovg  %edx,%ebp
  add    $0x4,%rax
  cmp    %rcx,%rax
  jne    L132
L388:
  mov    0x34(%rsp),%eax
  test   %eax,%eax
  js     L223
  mov    0x28(%rsp),%rcx
  mov    %rcx,%rbx
  mov    %eax,%eax
  lea    0x8(%rcx,%rax,8),%r12
L181:
  mov    (%rbx),%rdi
  call   <free@plt>
  add    $0x8,%rbx
  cmp    %r12,%rbx
  jne    L181
L223:
  mov    0x28(%rsp),%rdi
  call   <free@plt>
L335:
  mov    %ebp,%eax
  add    $0x48,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
L404:
  mov    $0x0,%edi
  mov    $0x0,%eax
  jmp    L127
L213:
  mov    $0xffffffff,%ebp
  jmp    L335
L89:
  mov    0x38(%rsp),%r8d
  sub    %r13d,%r8d
  movl   $0x0,0x1c(%rsp)
L183:
  mov    (%r10),%rax
  movl   $0x3e8,(%rax)
  movl   $0x1,0x18(%rsp)
L250:
  mov    0x18(%rsp),%eax
  add    %eax,%r8d
  cmp    %r8d,%eax
  jge    L203
  movslq %eax,%rcx
  shl    $0x2,%rcx
  sub    %eax,%ebp
  mov    %ebp,0x8(%rsp)
  mov    (%rsp),%edi
  sub    $0x1,%edi
  mov    %edi,0x14(%rsp)
  jmp    L293
L399:
  mov    0x20(%rsp),%eax
  mov    0x24(%rsp),%ebx
  lea    0x1(%rax,%rbx,1),%edx
  mov    $0x0,%esi
  jmp    L99
L301:
  mov    0x24(%rsp),%ebx
  cmp    %ebx,0x20(%rsp)
  jle    L399
  mov    0x24(%rsp),%eax
  lea    0x1(%rax,%rax,1),%edx
  mov    $0x1,%esi
L99:
  mov    0x28(%rsp),%rax
  mov    (%rax),%rax
  movl   $0x3e8,(%rax)
  add    $0x1,%edx
  cmp    $0x1,%edx
  jle    L265
  movl   $0x1,(%rsp)
  mov    $0x1,%eax
L62:
  mov    0x28(%rsp),%rbx
  mov    (%rbx),%rcx
  cltq
L249:
  mov    %eax,(%rcx,%rax,4)
  add    $0x1,%rax
  cmp    %eax,%edx
  jg     L249
L182:
  test   %esi,%esi
  je     L290
  lea    0x1(%rdx),%eax
  cltq
  mov    0x28(%rsp),%rbx
  mov    (%rbx),%rdx
  movl   $0x3e8,-0x4(%rdx,%rax,4)
L290:
  mov    0x34(%rsp),%ecx
  test   %ecx,%ecx
  jle    L47
  mov    $0x1,%eax
  mov    %eax,%ebx
  mov    0x24(%rsp),%eax
  sub    %eax,%ebx
  lea    0x1(%rax),%r14d
  mov    0x8(%rsp),%r12
  mov    0x28(%rsp),%rdi
  lea    0x8(%rdi),%r10
  add    %r14d,%ecx
  mov    %ecx,0x30(%rsp)
  mov    0x20(%rsp),%ecx
  lea    0x1(%rcx,%rax,2),%eax
  mov    %eax,0x38(%rsp)
  lea    0x1(%rcx),%eax
  mov    %eax,0x3c(%rsp)
  mov    %r14d,%r13d
  mov    %r15,%rax
  mov    %ebx,%r15d
  mov    %rax,%rbx
  jmp    L158
L104:
  mov    0x3c(%rsp),%r8d
  movl   $0x0,0x1c(%rsp)
  mov    $0x0,%ebp
  movl   $0x0,0x18(%rsp)
  jmp    L250
L160:
  mov    0x20(%rsp),%eax
  lea    0x1(%rax),%edx
  test   %edx,%edx
  jle    L98
  mov    $0x0,%esi
  movl   $0x0,(%rsp)
  mov    $0x0,%eax
  jmp    L62
L98:
  movl   $0x0,(%rsp)
  jmp    L290
```

assistant: ```c
int narrowbandUnitCostDistanceNoEndPenaltySeq2LowMem(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;
  int rowlength;
  int leftboundary, rightboundary;
  int previousleftboundary;
  if (len1 > len2) {
    return (-1);
  }
  S = (int **)calloc((len1 + 1), sizeof(int *));
  for (row = 0; row <= len1; row++) {
    from = row - maxerr;
    to = row + maxerr;
    leftboundary = 0;
    if (from <= 0)
      from = 0;
    else
      leftboundary = 1;
    rightboundary = 0;
    if (to >= len2)
      to = len2;
    else
      rightboundary = 1;
    rowlength = to - from + 1;
    S[row] = (int *)calloc(leftboundary + rowlength + rightboundary, sizeof(int));
  }
  row = 0;
  from = row - maxerr;
  to = row + maxerr;
  leftboundary = 0;
  if (from <= 0)
    from = 0;
  else
    leftboundary = 1;
  rightboundary = 0;
  if (to >= len2)
    to = len2;
  else
    rightboundary = 1;
  rowlength = to - from + 1;
  if (leftboundary) {
    S[row][0] = 1000;
  }
  for (col = leftboundary; col <= leftboundary + rowlength - 1; col++) {
    S[row][col] = col;
  }
  if (rightboundary) {
    S[row][leftboundary + rowlength + rightboundary - 1] = 1000;
  }
  previousleftboundary = leftboundary;
  for (row = 1; row <= len1; row++) {
    from = row - maxerr;
    to = row + maxerr;
    leftboundary = 0;
    if (from <= 0)
      from = 0;
    else
      leftboundary = 1;
    rightboundary = 0;
    if (to >= len2)
      to = len2;
    else
      rightboundary = 1;
    rowlength = to - from + 1;
    if (leftboundary) {
      S[row][0] = 1000;
    }
    for (col = leftboundary; col <= leftboundary + rowlength - 1; col++) {
      if (col == 0)
        S[row][0] = row;
      else {
        match = (seq1[row - 1] == seq2[from + col - leftboundary - 1]) ? 0 : 1;
        up = S[row - 1][col + previousleftboundary] + 1;
        left = S[row][col - 1] + 1;
        diagonal = S[row - 1][col - (1 - previousleftboundary)] + match;
        S[row][col] = ((diagonal <= left) ? ((diagonal <= up) ? diagonal : up) : ((left <= up) ? left : up));
      }
    }
    if (rightboundary) {
      S[row][leftboundary + rowlength + rightboundary - 1] = 1000;
    }
    previousleftboundary = leftboundary;
  }
  row = len1;
  from = row - maxerr;
  to = row + maxerr;
  leftboundary = 0;
  if (from <= 0)
    from = 0;
  else
    leftboundary = 1;
  rightboundary = 0;
  if (to >= len2)
    to = len2;
  else
    rightboundary = 1;
  rowlength = to - from + 1;
  score = S[row][0];
  for (col = 1; col <= leftboundary + rowlength + rightboundary - 1; col++) {
    if (S[row][col] < score) {
      score = S[row][col];
    }
  }
  for (row = 0; row <= len1; row++) {
    free(S[row]);
  }
  free(S);
  return (score);
}
```