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

```asm
<micro_apply_bitmask>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  push   %r15
  push   %r14
  push   %r13
  push   %r12
  push   %rbx
  sub    $0x48,%rsp
  mov    %rdi,%r12
  mov    %esi,%ebx
  mov    %fs:0x28,%rax
  mov    %rax,-0x38(%rbp)
  xor    %eax,%eax
  mov    %esi,%eax
  imul   %esi,%eax
  cltq
  lea    0xf(%rax),%rdx
  mov    %rdx,%rsi
  and    $0xfffffffffffffff0,%rsi
  and    $0xfffffffffffff000,%rdx
  mov    %rsp,%rcx
  sub    %rdx,%rcx
L31:
  cmp    %rcx,%rsp
  je     L231
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L31
L231:
  mov    %rsi,%rdx
  and    $0xfff,%edx
  sub    %rdx,%rsp
  test   %rdx,%rdx
  je     L160
  orq    $0x0,-0x8(%rsp,%rdx,1)
L160:
  mov    %rsp,%r13
  add    $0xf,%rax
  mov    %rax,%rdx
  and    $0xfffffffffffffff0,%rdx
  and    $0xfffffffffffff000,%rax
  mov    %rsp,%rcx
  sub    %rax,%rcx
L79:
  cmp    %rcx,%rsp
  je     L232
  sub    $0x1000,%rsp
  orq    $0x0,0xff8(%rsp)
  jmp    L79
L232:
  mov    %rdx,%rax
  and    $0xfff,%eax
  sub    %rax,%rsp
  test   %rax,%rax
  je     L238
  orq    $0x0,-0x8(%rsp,%rax,1)
L238:
  mov    %rsp,%r14
  mov    %ebx,%eax
  mov    %rax,%rdi
  mov    $0x0,%r15d
  movslq %ebx,%rax
  test   %ebx,%ebx
  jle    L212
  mov    %r13,-0x68(%rbp)
  mov    %r14,-0x70(%rbp)
  mov    %rax,%r9
  mov    %rdi,%r14
  jmp    L23
L247:
  lea    0x1(%rdx),%eax
  add    %r9,%rcx
  add    %r9,%r8
  add    %r10d,%esi
  cmp    %eax,%ebx
  je     L205
  mov    %eax,%edx
L55:
  mov    %rcx,%rdi
  movb   $0x0,(%rcx)
  testb  $0xf0,(%r8)
  jne    L247
  mov    $0x1,%eax
  test   $0x1,%dl
  je     L122
  mov    $0x0,%eax
L122:
  mov    %al,(%rdi)
  mov    %edx,%eax
  shr    $0x1f,%eax
  add    %edx,%eax
  sar    %eax
  add    %r11d,%eax
  test   $0x1,%al
  jne    L140
  addb   $0x2,(%rdi)
L140:
  movslq %esi,%rax
  imul   $0x55555556,%rax,%rax
  shr    $0x20,%rax
  mov    %esi,%r13d
  sar    $0x1f,%r13d
  sub    %r13d,%eax
  lea    (%rax,%rax,2),%r13d
  mov    %esi,%eax
  sub    %r13d,%eax
  test   $0x1,%r13b
  jne    L143
  addb   $0x4,(%rdi)
L143:
  lea    (%rdx,%r10,1),%r13d
  add    %r13d,%eax
  test   $0x1,%al
  jne    L247
  addb   $0x8,(%rdi)
  jmp    L247
L205:
  add    $0x1,%r15
  cmp    %r14,%r15
  je     L311
L23:
  mov    %r15d,%r10d
  movslq %r15d,%r11
  imul   $0x55555556,%r11,%r11
  shr    $0x20,%r11
  mov    %r15d,%eax
  sar    $0x1f,%eax
  sub    %eax,%r11d
  mov    -0x68(%rbp),%rax
  lea    (%rax,%r15,1),%rcx
  lea    (%r12,%r15,1),%r8
  mov    $0x0,%esi
  mov    $0x0,%edx
  jmp    L55
L311:
  mov    -0x68(%rbp),%r13
  mov    -0x70(%rbp),%r14
  mov    %edx,%r9d
  mov    $0x0,%r8d
  cltq
L213:
  mov    %r8,%rsi
  mov    $0x0,%edi
L97:
  movzbl (%r12,%rsi,1),%ecx
  and    $0x1,%ecx
  neg    %ecx
  xor    0x0(%r13,%rsi,1),%cl
  mov    %cl,(%r14,%rsi,1)
  mov    %edi,%ecx
  add    $0x1,%edi
  add    %rax,%rsi
  cmp    %ecx,%edx
  jne    L97
  lea    0x1(%r8),%rcx
  cmp    %r9,%r8
  je     L212
  mov    %rcx,%r8
  jmp    L213
L212:
  mov    $0x0,%r15d
L289:
  mov    %r15d,%edx
  mov    %ebx,%esi
  mov    %r14,%rdi
  call   <micro_evaluate@plt>
  mov    %eax,-0x60(%rbp,%r15,4)
  add    $0x1,%r15
  cmp    $0x8,%r15
  jne    L289
  mov    -0x60(%rbp),%ecx
  mov    -0x5c(%rbp),%edx
  mov    $0x1,%eax
  cmp    %edx,%ecx
  jl     L43
  mov    %ecx,%edx
  mov    $0x0,%eax
L43:
  mov    -0x58(%rbp),%ecx
  cmp    %edx,%ecx
  jg     L104
  mov    %edx,%ecx
L71:
  cmp    %ecx,-0x54(%rbp)
  mov    $0x3,%edx
  cmovg  %edx,%eax
  test   %ebx,%ebx
  jle    L316
  mov    $0x1,%r8d
  mov    %eax,%ecx
  shl    %cl,%r8d
  mov    %ebx,%r11d
  mov    $0x0,%r10d
  movslq %ebx,%r9
  jmp    L34
L104:
  mov    $0x2,%eax
  jmp    L71
L174:
  add    $0x1,%ecx
  add    %r9,%rdx
  cmp    %ecx,%ebx
  je     L240
L46:
  movzbl 0x0(%r13,%rdx,1),%esi
  test   %r8d,%esi
  je     L174
  testb  $0x1,(%r12,%rdx,1)
  sete   (%r12,%rdx,1)
  jmp    L174
L240:
  add    $0x1,%r10
  cmp    %r11,%r10
  je     L316
L34:
  mov    %r10,%rdx
  mov    $0x0,%ecx
  jmp    L46
L316:
  mov    -0x38(%rbp),%rdx
  sub    %fs:0x28,%rdx
  jne    L255
  lea    -0x28(%rbp),%rsp
  pop    %rbx
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  pop    %rbp
  ret
L255:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int micro_apply_bitmask(unsigned char *grid, int size) {
  int x, y;
  unsigned char p;
  int pattern, value[8];
  int best_val, best_pattern;
  unsigned char mask[size * size];
  unsigned char eval[size * size];
  for (x = 0; x < size; x++) {
    for (y = 0; y < size; y++) {
      mask[(y * size) + x] = 0x00;
      if (!(grid[(y * size) + x] & 0xf0)) {
        if ((y & 1) == 0) {
          mask[(y * size) + x] += 0x01;
        }
        if ((((y / 2) + (x / 3)) & 1) == 0) {
          mask[(y * size) + x] += 0x02;
        }
        if (((((y * x) & 1) + ((y * x) % 3)) & 1) == 0) {
          mask[(y * size) + x] += 0x04;
        }
        if (((((y + x) & 1) + ((y * x) % 3)) & 1) == 0) {
          mask[(y * size) + x] += 0x08;
        }
      }
    }
  }
  for (x = 0; x < size; x++) {
    for (y = 0; y < size; y++) {
      if (grid[(y * size) + x] & 0x01) {
        p = 0xff;
      } else {
        p = 0x00;
      }
      eval[(y * size) + x] = mask[(y * size) + x] ^ p;
    }
  }
  for (pattern = 0; pattern < 8; pattern++) {
    value[pattern] = micro_evaluate(eval, size, pattern);
  }
  best_pattern = 0;
  best_val = value[0];
  for (pattern = 1; pattern < 4; pattern++) {
    if (value[pattern] > best_val) {
      best_pattern = pattern;
      best_val = value[pattern];
    }
  }
  for (x = 0; x < size; x++) {
    for (y = 0; y < size; y++) {
      if (mask[(y * size) + x] & (0x01 << best_pattern)) {
        if (grid[(y * size) + x] & 0x01) {
          grid[(y * size) + x] = 0x00;
        } else {
          grid[(y * size) + x] = 0x01;
        }
      }
    }
  }
  return best_pattern;
}
```