user: Translate the below assembly code into C programming language:

```asm
<byteprocess>:
  endbr64
  push   %r13
  mov    %rdi,%r9
  mov    %rsi,%rdi
  push   %r12
  push   %rbp
  mov    %rdx,%rbp
  push   %rbx
  movslq (%rsi),%rax
  movslq %ecx,%rbx
  lea    (%r9,%rax,4),%rdx
  lea    0x1(%rax),%ecx
  cmp    $0x1,%r8d
  je     L73
  imul   $0xaaaaaaab,%r8d,%eax
  mov    %ecx,(%rsi)
  add    $0x2aaaaaaa,%eax
  ror    %eax
  cmp    $0x2aaaaaab,%eax
  sbb    %eax,%eax
  and    $0x17,%eax
  add    $0x385,%eax
  mov    %eax,(%rdx)
  test   %r8d,%r8d
  jle    L4
  movslq %ebx,%rdx
  mov    (%rsi),%eax
  xor    %r10d,%r10d
  movabs $0x48d159e26af37c05,%r11
  lea    0x0(%rbp,%rdx,8),%r12
  nopw   0x0(%rax,%rax,1)
L63:
  mov    %r8d,%esi
  lea    (%rbx,%r10,1),%edx
  sub    %r10d,%esi
  cmp    $0x5,%esi
  jg     L50
  movslq %edx,%rcx
  sub    $0x1,%esi
  lea    0x0(%rbp,%rcx,8),%rdx
  add    %rsi,%rcx
  lea    0x0(%rbp,%rcx,8),%r8
  jmp    L35
  nopl   0x0(%rax)
L11:
  mov    (%rdi),%eax
  add    $0x8,%rdx
L35:
  mov    (%rdx),%rcx
  lea    0x1(%rax),%esi
  cltq
  mov    %esi,(%rdi)
  mov    %ecx,(%r9,%rax,4)
  cmp    %rdx,%r8
  jne    L11
L4:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   0x0(%rax,%rax,1)
L50:
  add    $0x6,%r10d
  mov    %r12,%r13
  mov    $0x28,%ecx
  xor    %esi,%esi
  xchg   %ax,%ax
L57:
  mov    0x0(%r13),%rdx
  add    $0x8,%r13
  shl    %cl,%rdx
  sub    $0x8,%ecx
  or     %rdx,%rsi
  cmp    $0xfffffff8,%ecx
  jne    L57
  mov    $0x4,%ecx
  nopl   0x0(%rax,%rax,1)
L21:
  mov    %rsi,%rdx
  lea    (%rax,%rcx,1),%r13d
  sub    $0x1,%ecx
  shr    $0x2,%rdx
  mov    %rdx,%rax
  mul    %r11
  shr    $0x6,%rdx
  imul   $0x384,%rdx,%rax
  sub    %rax,%rsi
  mov    %esi,(%r9,%r13,4)
  mov    %rdx,%rsi
  mov    (%rdi),%eax
  cmp    $0xffffffff,%ecx
  jne    L21
  add    $0x5,%eax
  add    $0x30,%r12
  mov    %eax,(%rdi)
  cmp    %r10d,%r8d
  jg     L63
  jmp    L4
  nopw   0x0(%rax,%rax,1)
L73:
  mov    %ecx,(%rsi)
  movl   $0x391,(%rdx)
  movslq (%rsi),%rax
  mov    0x0(%rbp,%rbx,8),%rdx
  lea    0x1(%rax),%ecx
  mov    %ecx,(%rsi)
  pop    %rbx
  mov    %edx,(%r9,%rax,4)
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
```

assistant: ```c
void byteprocess(int *chainemc, int *mclength, uint8_t chaine[], int start, int length, int block) {
  int debug = 0;
  int len = 0;
  unsigned int chunkLen = 0;
  uint64_t mantisa = 0ULL;
  uint64_t total = 0ULL;
  if (debug)
    printf("\nEntering byte mode at position %d\n", start);
  if (length == 1) {
    chainemc[(*mclength)++] = 913;
    chainemc[(*mclength)++] = chaine[start];
    if (debug) {
      printf("913 %d\n", chainemc[*mclength - 1]);
    }
  } else {
    if (length % 6 == 0) {
      chainemc[(*mclength)++] = 924;
      if (debug)
        printf("924 ");
    } else {
      chainemc[(*mclength)++] = 901;
      if (debug)
        printf("901 ");
    }
    while (len < length) {
      chunkLen = length - len;
      if (6 <= chunkLen) {
        chunkLen = 6;
        len += chunkLen;
        total = 0ULL;
        while (chunkLen--) {
          mantisa = chaine[start++];
          total |= mantisa << (uint64_t)(chunkLen * 8ULL);
        }
        chunkLen = 5;
        while (chunkLen--) {
          chainemc[*mclength + chunkLen] = (int)(total % 900ULL);
          total /= 900ULL;
        }
        *mclength += 5;
      } else {
        len += chunkLen;
        while (chunkLen--) {
          chainemc[(*mclength)++] = chaine[start++];
        }
      }
    }
  }
}
```