user: 请从给定的汇编指令推导出C源代码:

```asm
<power_even>:
  endbr64
  cmp    $0x1,%esi
  je     L34
  mov    %esi,%edx
  mov    %esi,%eax
  shr    $0x1f,%edx
  add    %edx,%eax
  sar    %eax
  cmp    $0x1,%eax
  je     L156
  mov    %eax,%ecx
  push   %r15
  mov    %edi,%r10d
  push   %r14
  mov    %ecx,%eax
  imul   %edi,%r10d
  push   %r13
  shr    $0x1f,%eax
  push   %r12
  add    %ecx,%eax
  push   %rbp
  sar    %eax
  mov    %r10d,%r9d
  push   %rbx
  sub    $0x48,%rsp
  movl   $0x1,0x14(%rsp)
  cmp    $0x1,%eax
  je     L172
L127:
  mov    %eax,0x18(%rsp)
  movl   $0x1,0x10(%rsp)
  mov    %eax,0x1c(%rsp)
L95:
  mov    0x18(%rsp),%esi
  mov    %esi,%eax
  shr    $0x1f,%eax
  add    %esi,%eax
  sar    %eax
  mov    %eax,0x18(%rsp)
  mov    %eax,%edx
  cmp    $0x1,%eax
  je     L176
  mov    %edx,%eax
  movl   $0x1,0x8(%rsp)
  shr    $0x1f,%eax
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edx
  cmp    $0x1,%eax
  je     L134
L96:
  mov    %eax,%ecx
  movl   $0x1,0xc(%rsp)
  mov    %ecx,%eax
  shr    $0x1f,%eax
  add    %ecx,%eax
  sar    %eax
  mov    %eax,%ecx
  cmp    $0x1,%eax
  je     L58
L145:
  mov    %eax,%ebx
  mov    $0x1,%r11d
  mov    %ebx,%eax
  shr    $0x1f,%eax
  add    %ebx,%eax
  sar    %eax
  mov    %eax,%ebx
  cmp    $0x1,%eax
  je     L132
L63:
  mov    %eax,%ebp
  mov    $0x1,%r12d
  mov    %ebp,%eax
  shr    $0x1f,%eax
  add    %ebp,%eax
  sar    %eax
  cmp    $0x1,%eax
  je     L67
L169:
  mov    %eax,%r14d
  mov    %eax,%r8d
  mov    $0x1,%r15d
  mov    %ebx,%r10d
  mov    %r14d,%eax
  shr    $0x1f,%eax
  add    %r14d,%eax
  sar    %eax
  cmp    $0x1,%eax
  je     L137
L126:
  mov    %r11d,%r14d
  mov    %eax,%r13d
  mov    $0x1,%ebx
  mov    %eax,%r11d
L94:
  mov    %r13d,%esi
  mov    $0x1,%ebp
L146:
  mov    %esi,%eax
  mov    %r9d,0x3c(%rsp)
  shr    $0x1f,%eax
  mov    %edx,0x38(%rsp)
  add    %esi,%eax
  mov    %ecx,0x34(%rsp)
  sar    %eax
  mov    %r10d,0x30(%rsp)
  mov    %eax,%esi
  mov    %r8d,0x2c(%rsp)
  mov    %r11d,0x28(%rsp)
  mov    %edi,0x20(%rsp)
  mov    %eax,0x24(%rsp)
  call   <power_even>
  mov    0x24(%rsp),%esi
  mov    0x20(%rsp),%edi
  imul   %eax,%ebp
  mov    0x28(%rsp),%r11d
  mov    0x2c(%rsp),%r8d
  cmp    $0x1,%esi
  mov    0x30(%rsp),%r10d
  mov    0x34(%rsp),%ecx
  mov    0x38(%rsp),%edx
  mov    0x3c(%rsp),%r9d
  jne    L146
  mov    %r13d,%eax
  imul   %edi,%ebp
  shr    $0x1f,%eax
  add    %r13d,%eax
  sar    %eax
  imul   %ebp,%ebx
  mov    %eax,%r13d
  cmp    $0x1,%eax
  jne    L94
  mov    %r11d,%eax
  mov    %r14d,%r11d
  mov    %eax,%r14d
  mov    %ebx,%eax
  imul   %edi,%eax
  imul   %edi,%eax
  imul   %eax,%r15d
  mov    %r14d,%eax
  shr    $0x1f,%eax
  add    %r14d,%eax
  sar    %eax
  cmp    $0x1,%eax
  jne    L126
L137:
  mov    %r15d,%eax
  mov    %r8d,%ebp
  mov    %r10d,%ebx
  imul   %r9d,%eax
  imul   %edi,%eax
  imul   %edi,%eax
  imul   %eax,%r12d
  mov    %ebp,%eax
  shr    $0x1f,%eax
  add    %ebp,%eax
  sar    %eax
  cmp    $0x1,%eax
  jne    L169
L67:
  mov    %r12d,%eax
  imul   %r9d,%eax
  imul   %edi,%eax
  imul   %edi,%eax
  imul   %eax,%r11d
  mov    %ebx,%eax
  shr    $0x1f,%eax
  add    %ebx,%eax
  sar    %eax
  mov    %eax,%ebx
  cmp    $0x1,%eax
  jne    L63
L132:
  mov    %r11d,%eax
  imul   %r9d,%eax
  imul   %edi,%eax
  imul   %edi,%eax
  imul   0xc(%rsp),%eax
  mov    %eax,0xc(%rsp)
  mov    %ecx,%eax
  shr    $0x1f,%eax
  add    %ecx,%eax
  sar    %eax
  mov    %eax,%ecx
  cmp    $0x1,%eax
  jne    L145
L58:
  mov    0xc(%rsp),%eax
  imul   %r9d,%eax
  imul   %edi,%eax
  imul   %edi,%eax
  imul   0x8(%rsp),%eax
  mov    %eax,0x8(%rsp)
  mov    %edx,%eax
  shr    $0x1f,%eax
  add    %edx,%eax
  sar    %eax
  mov    %eax,%edx
  cmp    $0x1,%eax
  jne    L96
L134:
  mov    0x8(%rsp),%eax
  imul   %r9d,%eax
  imul   %edi,%eax
  imul   %edi,%eax
  imul   0x10(%rsp),%eax
  mov    %eax,0x10(%rsp)
  jmp    L95
L176:
  mov    0x10(%rsp),%eax
  mov    0x1c(%rsp),%ecx
  imul   %r9d,%eax
  imul   %edi,%eax
  imul   %edi,%eax
  imul   0x14(%rsp),%eax
  mov    %eax,0x14(%rsp)
  mov    %ecx,%eax
  shr    $0x1f,%eax
  add    %ecx,%eax
  sar    %eax
  cmp    $0x1,%eax
  jne    L127
L172:
  mov    %edi,%eax
  mov    0x14(%rsp),%r9d
  add    $0x48,%rsp
  imul   %edi,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  pop    %r14
  pop    %r15
  imul   %eax,%r9d
  mov    %r9d,%eax
  imul   %edi,%eax
  imul   %eax,%edi
  mov    %edi,%eax
  ret
L156:
  imul   %edi,%eax
  imul   %eax,%edi
L34:
  mov    %edi,%eax
  ret
```

assistant: ```c
int power_even(int number, int even) {
  if (even == 1) {
    return number;
  } else {
    return power_even(number, even / 2) * power_even(number, even / 2);
  }
}
```