user: What would the C source look like for the assembly code provided here?

```asm
<write_as_matrix>:
  endbr64
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %r9,%rbx
  sub    $0x28,%rsp
  mov    (%rdx),%ebp
  mov    (%rcx),%r13d
  mov    0x68(%rsp),%rax
  mov    0x78(%rsp),%r12
  mov    %r8,0x18(%rsp)
  mov    %rsi,0x10(%rsp)
  mov    (%rdi),%rdi
  mov    (%rax),%r8d
  test   %r8d,%r8d
  je     L81
  lea    D17(%rip),%rsi
  call   <fopen@plt>
  mov    %rax,%r15
  test   %r15,%r15
  je     L234
L228:
  mov    0x98(%rsp),%rax
  mov    (%rax),%esi
  test   %esi,%esi
  jne    L100
L183:
  movq   $0x0,(%rsp)
  movslq %ebp,%r14
  test   %ebp,%ebp
  jle    L125
  mov    %r13d,0x8(%rsp)
  mov    0x60(%rsp),%r13
  nopl   0x0(%rax)
L229:
  mov    0x90(%rsp),%rax
  mov    (%rax),%ecx
  test   %ecx,%ecx
  jne    L115
L104:
  mov    0x8(%rsp),%edx
  test   %edx,%edx
  jle    L0
  mov    0x10(%rsp),%rbp
  xor    %ebx,%ebx
  add    (%rsp),%rbp
  jmp    L167
  nopl   0x0(%rax,%rax,1)
L57:
  mov    %r15,%rsi
  test   %edx,%edx
  je     L37
  cmp    $0x2,%edx
  mov    %edx,0xc(%rsp)
  jg     L210
  mov    $0x31,%edi
  call   <fputc@plt>
  mov    (%r12),%rdi
  mov    %r15,%rsi
  call   <fputs@plt>
  mov    0xc(%rsp),%edx
  xor    %edi,%edi
  cmp    $0x2,%edx
  sete   %dil
  add    $0x31,%edi
L93:
  mov    %r15,%rsi
  call   <fputc@plt>
L194:
  add    $0x1,%ebx
  add    %r14,%rbp
  cmp    %ebx,0x8(%rsp)
  je     L0
L28:
  mov    (%r12),%rdi
  mov    %r15,%rsi
  call   <fputs@plt>
L167:
  movsbl 0x0(%rbp),%edx
  mov    0x0(%r13),%eax
  mov    %edx,%edi
  test   %eax,%eax
  jne    L57
  test   %edx,%edx
  jne    L151
  mov    0x88(%rsp),%rax
  mov    %r15,%rsi
  add    $0x1,%ebx
  add    %r14,%rbp
  mov    (%rax),%rdi
  call   <fputs@plt>
  cmp    %ebx,0x8(%rsp)
  jne    L28
L0:
  mov    0x80(%rsp),%rax
  mov    %r15,%rsi
  mov    (%rax),%rdi
  call   <fputs@plt>
  addq   $0x1,(%rsp)
  mov    (%rsp),%rax
  cmp    %rax,%r14
  jne    L229
L125:
  mov    %r15,%rdi
  call   <fclose@plt>
  xor    %edx,%edx
L171:
  mov    0xa0(%rsp),%rax
  mov    %edx,(%rax)
  add    $0x28,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  ret
  nop
L151:
  add    $0x2f,%edi
  movsbl %dil,%edi
  jmp    L93
  nopl   0x0(%rax)
L210:
  mov    $0x32,%edi
  call   <fputc@plt>
  mov    (%r12),%rdi
  mov    %r15,%rsi
  call   <fputs@plt>
  mov    $0x32,%edi
  jmp    L93
L37:
  mov    0x88(%rsp),%rax
  mov    (%rax),%rdi
  call   <fputs@plt>
  mov    (%r12),%rdi
  mov    %r15,%rsi
  call   <fputs@plt>
  mov    0x88(%rsp),%rax
  mov    %r15,%rsi
  mov    (%rax),%rdi
  call   <fputs@plt>
  jmp    L194
  nopl   0x0(%rax)
L115:
  mov    0x18(%rsp),%rax
  mov    (%rsp),%rcx
  mov    %r15,%rdi
  mov    (%rax,%rcx,8),%rsi
  mov    0x70(%rsp),%rax
  mov    (%rax),%edx
  call   <put_name@plt>
  mov    (%r12),%rdi
  mov    %r15,%rsi
  call   <fputs@plt>
  jmp    L104
L81:
  lea    D1(%rip),%rsi
  call   <fopen@plt>
  mov    %rax,%r15
  test   %r15,%r15
  jne    L228
L234:
  mov    $0x1,%edx
  jmp    L171
L100:
  test   %r13d,%r13d
  jle    L174
  lea    -0x1(%r13),%eax
  mov    %ebp,0x8(%rsp)
  mov    0x70(%rsp),%rbp
  lea    0x8(%rbx,%rax,8),%r14
  jmp    L45
L3:
  mov    (%r12),%rdi
  mov    %r15,%rsi
  call   <fputs@plt>
L45:
  mov    (%rbx),%rsi
  mov    0x0(%rbp),%edx
  mov    %r15,%rdi
  add    $0x8,%rbx
  call   <put_name@plt>
  cmp    %r14,%rbx
  jne    L3
  mov    0x8(%rsp),%ebp
L174:
  mov    0x80(%rsp),%rax
  mov    %r15,%rsi
  mov    (%rax),%rdi
  call   <fputs@plt>
  jmp    L183
```

tool_calls: name: parse_data
arguments: data_label: D17
data_type: string
name: parse_data
arguments: data_label: D1
data_type: string

tool: D17: a

tool: D1: w

assistant: ```c
void write_as_matrix(char **file, char *x, int *N, int *M, char **rnames, char **cnames, int *asalleles, int *append, int *quote, char **sep, char **eol, char **na, int *row_names, int *col_names, int *iferror) {
  int zerom = (int)'0' - 1;
  int nrow = *N;
  int ncol = *M;
  FILE *outfile;
  int i = 0, j = 0, ij = 0;
  if (*append)
    outfile = fopen(*file, "a");
  else
    outfile = fopen(*file, "w");
  if (!outfile) {
    *iferror = 1;
    return;
  }
  if (*col_names) {
    for (i = 0; i < ncol; i++) {
      if (i)
        fputs(*sep, outfile);
      put_name(outfile, cnames[i], *quote);
    }
    fputs(*eol, outfile);
  }
  for (i = 0; i < nrow; i++) {
    if (*row_names) {
      put_name(outfile, rnames[i], *quote);
      fputs(*sep, outfile);
    }
    for (j = 0, ij = i; j < ncol; j++, ij += nrow) {
      if (j)
        fputs(*sep, outfile);
      int g = (int)x[ij];
      if (*asalleles) {
        if (!g) {
          fputs(*na, outfile);
          fputs(*sep, outfile);
          fputs(*na, outfile);
        } else {
          fputc(g < 3 ? '1' : '2', outfile);
          fputs(*sep, outfile);
          fputc(g < 2 ? '1' : '2', outfile);
        }
      } else {
        if (!g)
          fputs(*na, outfile);
        else {
          g += zerom;
          fputc((char)g, outfile);
        }
      }
    }
    fputs(*eol, outfile);
  }
  fclose(outfile);
  *iferror = 0;
  return;
}
```