user: Converte this assembly snippet into its equivalent C code:

```asm
<trap>:
  endbr64
  push   %r12
  mov    %rdi,%rcx
  test   %rdi,%rdi
  je     L217
  mov    %esi,%edi
  cmp    $0x2,%esi
  jle    L217
  sub    $0x1,%edi
  xor    %r11d,%r11d
  xor    %r12d,%r12d
L60:
  lea    0x1(%r11),%eax
  cmp    %edi,%r11d
  cltq
  setl   %sil
  mov    -0x4(%rcx,%rax,4),%r8d
  cmp    %r8d,(%rcx,%rax,4)
  jle    L156
  test   %sil,%sil
  je     L156
  nopl   0x0(%rax,%rax,1)
L152:
  cmp    %eax,%edi
  mov    (%rcx,%rax,4),%r8d
  mov    %eax,%r11d
  setg   %sil
  cmp    %r8d,0x4(%rcx,%rax,4)
  setg   %dl
  add    $0x1,%rax
  test   %sil,%dl
  jne    L152
L156:
  movslq %edi,%rax
  mov    (%rcx,%rax,4),%r9d
  cmp    %r9d,-0x4(%rcx,%rax,4)
  jle    L64
  test   %sil,%sil
  je     L64
  lea    -0x1(%rdi),%eax
  cltq
  xchg   %ax,%ax
L24:
  cmp    %eax,%r11d
  mov    (%rcx,%rax,4),%r9d
  mov    %eax,%edi
  setl   %sil
  cmp    %r9d,-0x4(%rcx,%rax,4)
  setg   %dl
  sub    $0x1,%rax
  test   %sil,%dl
  jne    L24
L64:
  cmp    %r8d,%r9d
  jl     L162
  nopl   0x0(%rax,%rax,1)
L189:
  test   %sil,%sil
  je     L67
  lea    0x1(%r11),%eax
  movslq %eax,%rdx
  mov    (%rcx,%rdx,4),%edx
  cmp    %r8d,%edx
  jge    L131
  lea    0x2(%r11),%eax
  xor    %esi,%esi
  cltq
  nopl   0x0(%rax,%rax,1)
L100:
  mov    %eax,%r10d
  add    $0x1,%rax
  add    %edx,%esi
  mov    -0x4(%rcx,%rax,4),%edx
  cmp    %r8d,%edx
  jl     L100
  mov    %r10d,%eax
  sub    %r11d,%eax
  mov    %r10d,%r11d
  sub    $0x1,%eax
  imul   %r8d,%eax
  mov    %edx,%r8d
  sub    %esi,%eax
  add    %eax,%r12d
L137:
  cmp    %edi,%r11d
  setl   %sil
  cmp    %edx,%r9d
  jge    L189
L67:
  cmp    %r8d,%r9d
  jg     L9
L162:
  test   %sil,%sil
  je     L9
L164:
  lea    -0x1(%rdi),%eax
  movslq %eax,%rdx
  mov    (%rcx,%rdx,4),%edx
  cmp    %r9d,%edx
  jge    L87
  lea    -0x2(%rdi),%eax
  xor    %esi,%esi
  cltq
  nopl   (%rax)
L172:
  mov    %eax,%r10d
  sub    $0x1,%rax
  add    %edx,%esi
  mov    0x4(%rcx,%rax,4),%edx
  cmp    %r9d,%edx
  jl     L172
  sub    %r10d,%edi
  sub    $0x1,%edi
  imul   %r9d,%edi
  mov    %edx,%r9d
  sub    %esi,%edi
  add    %edi,%r12d
  mov    %r10d,%edi
  cmp    %edx,%r8d
  jl     L9
L130:
  cmp    %edi,%r11d
  jl     L164
  mov    %r12d,%eax
  pop    %r12
  ret
  nop
L87:
  mov    %edx,%r9d
  mov    %eax,%edi
  cmp    %edx,%r8d
  jge    L130
L9:
  cmp    %edi,%r11d
  jl     L60
  mov    %r12d,%eax
  pop    %r12
  ret
  nopl   0x0(%rax)
L131:
  mov    %edx,%r8d
  mov    %eax,%r11d
  jmp    L137
L217:
  xor    %r12d,%r12d
  mov    %r12d,%eax
  pop    %r12
  ret
```

assistant: ```c
int trap(int *height, int heightSize) {
  if (height == NULL || heightSize < 3) {
    return 0;
  }
  int traped = 0;
  int used = 0;
  int i = 0, ip = 0, j = heightSize - 1, jp = j;
  while (i < j) {
    while (height[i + 1] > height[i] && i < j) {
      i++;
    }
    while (height[j - 1] > height[j] && i < j) {
      j--;
    }
    while (height[i] <= height[j] && i < j) {
      used = 0;
      ip = i + 1;
      while (height[ip] < height[i]) {
        used += height[ip];
        ip++;
      }
      traped += (ip - i - 1) * height[i] - used;
      i = ip;
    }
    while (height[j] <= height[i] && i < j) {
      used = 0;
      jp = j - 1;
      while (height[jp] < height[j]) {
        used += height[jp];
        jp--;
      }
      traped += (j - jp - 1) * height[j] - used;
      j = jp;
    }
  }
  return traped;
}
```