ylfeng/ReF-Decompile-dataset huggingface dataset:
user: Converte this assembly snippet into its equivalent C code:

```asm
<main>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  lea    D13(%rip),%rbx
  sub    $0x38,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x28(%rsp)
  xor    %eax,%eax
  lea    0xc(%rsp),%r12
  nopw   0x0(%rax,%rax,1)
L3:
  mov    %r12,%rsi
  mov    %rbx,%rdi
  call   <scanf@plt>
  mov    0xc(%rsp),%ebp
  test   %ebp,%ebp
  js     L3
  lea    0x10(%rsp),%r12
  mov    %ebp,%edi
  test   %ebp,%ebp
  jle    L13
  xchg   %ax,%ax
L43:
  xor    %r13d,%r13d
  nopl   0x0(%rax,%rax,1)
L51:
  and    $0xf,%edi
  mov    %r13d,%ebx
  call   <HexNumber@plt>
  mov    0xc(%rsp),%edx
  mov    %r13,%rsi
  mov    %al,0x0(%r13,%r12,1)
  lea    0x1(%rsi),%r13
  test   %edx,%edx
  lea    0xf(%rdx),%edi
  cmovns %edx,%edi
  sar    $0x4,%edi
  mov    %edi,0xc(%rsp)
  cmp    $0xf,%edx
  jg     L51
  sub    $0x1,%ebx
  xor    %edx,%edx
  mov    $0x1,%ecx
  xor    %edi,%edi
  movslq %ebx,%rbx
  jmp    L24
  nopl   0x0(%rax,%rax,1)
L63:
  movzbl (%rbx,%r12,1),%eax
  sub    $0x1,%rbx
L24:
  cmp    %al,(%rdx,%r12,1)
  cmovne %edi,%ecx
  add    $0x1,%rdx
  cmp    %ebx,%edx
  jle    L63
  add    $0x1,%ebp
  test   %ecx,%ecx
  jne    L71
  mov    %ebp,0xc(%rsp)
  mov    %ebp,%edi
  test   %ebp,%ebp
  jg     L43
L13:
  mov    0x28(%rsp),%rax
  sub    %fs:0x28,%rax
  jne    L17
  add    $0x38,%rsp
  xor    %eax,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  cs nopw 0x0(%rax,%rax,1)
L71:
  lea    0x11(%rsp,%rsi,1),%rbp
  lea    D18(%rip),%rbx
L44:
  movsbl (%r12),%esi
  mov    %rbx,%rdi
  add    $0x1,%r12
  call   <printf@plt>
  cmp    %r12,%rbp
  jne    L44
  jmp    L13
L17:
  call   <__stack_chk_fail@plt>
```

tool_calls: name: parse_data
arguments: tag: D13
data_type: string
name: parse_data
arguments: tag: D18
data_type: string

tool: D13: %d

tool: D18: %c

assistant: ```c
int main() {
  int number, i = 0, j = 0, k = 0, palindrom = 1, original;
  char array[20];
  do {
    scanf("%d", &number);
  } while (number < 0);
  original = number;
  do {
    i = 0;
    while (number > 0) {
      array[i] = HexNumber(number % 16);
      number = number / 16;
      i++;
    }
    palindrom = 1;
    for (j = 0, k = i - 1; j <= k; j++, k--) {
      if (array[j] != array[k]) {
        palindrom = 0;
      }
    }
    if (palindrom == 0) {
      original++;
      number = original;
    }
  } while (palindrom == 0);
  for (j = 0; j < i; j++) {
    printf("%c", array[j]);
  }
}
```
user: 这段汇编代码用C语言表示是什么样的：

```asm
<udp_port>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %edi,-0x14(%rbp)
  mov    %esi,-0x18(%rbp)
  mov    -0x14(%rbp),%eax
  mov    %eax,%edi
  call   <ntohs@plt>
  mov    %eax,-0x14(%rbp)
  mov    -0x18(%rbp),%eax
  mov    %eax,%edi
  call   <ntohs@plt>
  mov    %eax,-0x18(%rbp)
  mov    -0x14(%rbp),%eax
  cmp    -0x18(%rbp),%eax
  jge    L37
  cmpl   $0x3ff,-0x14(%rbp)
  jg     L37
  mov    -0x14(%rbp),%eax
  jmp    L115
L37:
  mov    -0x18(%rbp),%eax
  cmp    -0x14(%rbp),%eax
  jge    L15
  cmpl   $0x3ff,-0x18(%rbp)
  jg     L15
  mov    -0x18(%rbp),%eax
  jmp    L115
L15:
  mov    -0x14(%rbp),%eax
  mov    %eax,%edi
  call   <lookup_port_udp@plt>
  mov    %rax,-0x10(%rbp)
  mov    -0x18(%rbp),%eax
  mov    %eax,%edi
  call   <lookup_port_udp@plt>
  mov    %rax,-0x8(%rbp)
  cmpq   $0x0,-0x10(%rbp)
  je     L49
  cmpq   $0x0,-0x8(%rbp)
  jne    L49
  mov    -0x14(%rbp),%eax
  jmp    L115
L49:
  cmpq   $0x0,-0x10(%rbp)
  jne    L123
  cmpq   $0x0,-0x8(%rbp)
  je     L123
  mov    -0x18(%rbp),%eax
  jmp    L115
L123:
  mov    -0x14(%rbp),%eax
  cmp    -0x18(%rbp),%eax
  jge    L34
  mov    -0x14(%rbp),%eax
  jmp    L115
L34:
  mov    -0x18(%rbp),%eax
L115:
  leave
  ret
```

assistant: ```c
uint16_t udp_port(uint16_t src, uint16_t dst) {
  char *tmp1, *tmp2;
  src = ntohs(src);
  dst = ntohs(dst);
  if (src < dst && src < 1024) {
    return src;
  } else if (dst < src && dst < 1024) {
    return dst;
  } else {
    tmp1 = lookup_port_udp(src);
    tmp2 = lookup_port_udp(dst);
    if (tmp1 && !tmp2) {
      return src;
    } else if (!tmp1 && tmp2) {
      return dst;
    } else {
      if (src < dst)
        return src;
      else
        return dst;
    }
  }
}
```
user: 请从给定的汇编指令推导出C源代码：

```asm
<udp_port>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  sub    $0x8,%rsp
  mov    %esi,%ebp
  call   <ntohs@plt>
  mov    %eax,%ebx
  mov    %ebp,%edi
  call   <ntohs@plt>
  mov    %eax,%ebp
  cmp    %eax,%ebx
  setl   %r12b
  cmp    $0x3ff,%ebx
  jg     L60
  test   %r12b,%r12b
  je     L60
L57:
  mov    %ebx,%eax
  add    $0x8,%rsp
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
L60:
  cmp    %ebp,%ebx
  jle    L2
  cmp    $0x3ff,%ebp
  jg     L2
  mov    %ebp,%ebx
  jmp    L57
L2:
  mov    %ebx,%edi
  call   <lookup_port_udp@plt>
  mov    %rax,%r13
  mov    %ebp,%edi
  call   <lookup_port_udp@plt>
  test   %r13,%r13
  je     L90
  test   %rax,%rax
  je     L57
L90:
  test   %r13,%r13
  sete   %dl
  test   %rax,%rax
  setne  %al
  test   %al,%dl
  jne    L28
  test   %r12b,%r12b
  jne    L57
L28:
  mov    %ebp,%ebx
  jmp    L57
```

assistant: ```c
uint16_t udp_port(uint16_t src, uint16_t dst) {
  char *tmp1, *tmp2;
  src = ntohs(src);
  dst = ntohs(dst);
  if (src < dst && src < 1024) {
    return src;
  } else if (dst < src && dst < 1024) {
    return dst;
  } else {
    tmp1 = lookup_port_udp(src);
    tmp2 = lookup_port_udp(dst);
    if (tmp1 && !tmp2) {
      return src;
    } else if (!tmp1 && tmp2) {
      return dst;
    } else {
      if (src < dst)
        return src;
      else
        return dst;
    }
  }
}
```
user: What is the c source code of the assembly code below:

```asm
<udp_port>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  mov    %esi,%ebp
  push   %rbx
  sub    $0x8,%rsp
  call   <ntohs@plt>
  mov    %ebp,%edi
  mov    %eax,%r12d
  call   <ntohs@plt>
  cmp    %eax,%r12d
  mov    %eax,%ebx
  setl   %bpl
  cmp    $0x3ff,%r12d
  jg     L58
  test   %bpl,%bpl
  je     L58
L71:
  add    $0x8,%rsp
  mov    %r12d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   0x0(%rax)
L58:
  cmp    %ebx,%r12d
  jle    L39
  cmp    $0x3ff,%ebx
  jg     L39
L76:
  add    $0x8,%rsp
  mov    %ebx,%r12d
  mov    %r12d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  cs nopw 0x0(%rax,%rax,1)
L39:
  mov    %r12d,%edi
  call   <lookup_port_udp@plt>
  mov    %ebx,%edi
  mov    %rax,%r13
  call   <lookup_port_udp@plt>
  test   %r13,%r13
  je     L47
  test   %rax,%rax
  je     L71
L47:
  test   %r13,%r13
  sete   %dl
  test   %rax,%rax
  setne  %al
  test   %al,%dl
  jne    L76
  test   %bpl,%bpl
  je     L76
  jmp    L71
```

assistant: ```c
uint16_t udp_port(uint16_t src, uint16_t dst) {
  char *tmp1, *tmp2;
  src = ntohs(src);
  dst = ntohs(dst);
  if (src < dst && src < 1024) {
    return src;
  } else if (dst < src && dst < 1024) {
    return dst;
  } else {
    tmp1 = lookup_port_udp(src);
    tmp2 = lookup_port_udp(dst);
    if (tmp1 && !tmp2) {
      return src;
    } else if (!tmp1 && tmp2) {
      return dst;
    } else {
      if (src < dst)
        return src;
      else
        return dst;
    }
  }
}
```
user: 提供的汇编代码用C语言表示会是什么样子:

```asm
<udp_port>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  mov    %esi,%ebp
  push   %rbx
  sub    $0x8,%rsp
  call   <ntohs@plt>
  mov    %ebp,%edi
  mov    %eax,%r12d
  call   <ntohs@plt>
  cmp    %eax,%r12d
  mov    %eax,%ebx
  setl   %bpl
  cmp    $0x3ff,%r12d
  jg     L5
  test   %bpl,%bpl
  je     L5
L86:
  add    $0x8,%rsp
  mov    %r12d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  nopl   0x0(%rax)
L5:
  cmp    %ebx,%r12d
  jle    L27
  cmp    $0x3ff,%ebx
  jg     L27
L58:
  add    $0x8,%rsp
  mov    %ebx,%r12d
  mov    %r12d,%eax
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
  cs nopw 0x0(%rax,%rax,1)
L27:
  mov    %r12d,%edi
  call   <lookup_port_udp@plt>
  mov    %ebx,%edi
  mov    %rax,%r13
  call   <lookup_port_udp@plt>
  test   %r13,%r13
  je     L71
  test   %rax,%rax
  je     L86
L71:
  test   %r13,%r13
  sete   %dl
  test   %rax,%rax
  setne  %al
  test   %al,%dl
  jne    L58
  test   %bpl,%bpl
  je     L58
  jmp    L86
```

assistant: ```c
uint16_t udp_port(uint16_t src, uint16_t dst) {
  char *tmp1, *tmp2;
  src = ntohs(src);
  dst = ntohs(dst);
  if (src < dst && src < 1024) {
    return src;
  } else if (dst < src && dst < 1024) {
    return dst;
  } else {
    tmp1 = lookup_port_udp(src);
    tmp2 = lookup_port_udp(dst);
    if (tmp1 && !tmp2) {
      return src;
    } else if (!tmp1 && tmp2) {
      return dst;
    } else {
      if (src < dst)
        return src;
      else
        return dst;
    }
  }
}
```
user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<inbyte>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x10,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,-0x8(%rbp)
  xor    %eax,%eax
  movb   $0x0,-0x9(%rbp)
  lea    -0x9(%rbp),%rax
  mov    $0x1,%edx
  mov    %rax,%rsi
  mov    $0x0,%edi
  call   <read@plt>
  movzbl -0x9(%rbp),%eax
  movsbl %al,%eax
  mov    -0x8(%rbp),%rdx
  sub    %fs:0x28,%rdx
  je     L2
  call   <__stack_chk_fail@plt>
L2:
  leave
  ret
```

assistant: ```c
int inbyte(void) {
  char ch = 0;
  read(0, &ch, 1);
  return ch;
}
```
user: 下面的汇编指令对应的C源代码是什么：

```asm
<inbyte>:
  endbr64
  sub    $0x18,%rsp
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  movb   $0x0,0x7(%rsp)
  lea    0x7(%rsp),%rsi
  mov    $0x1,%edx
  mov    $0x0,%edi
  call   <read@plt>
  movsbl 0x7(%rsp),%eax
  mov    0x8(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L8
  add    $0x18,%rsp
  ret
L8:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int inbyte(void) {
  char ch = 0;
  read(0, &ch, 1);
  return ch;
}
```
user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<inbyte>:
  endbr64
  sub    $0x18,%rsp
  mov    $0x1,%edx
  xor    %edi,%edi
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  lea    0x7(%rsp),%rsi
  movb   $0x0,0x7(%rsp)
  call   <read@plt>
  movsbl 0x7(%rsp),%eax
  mov    0x8(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L2
  add    $0x18,%rsp
  ret
L2:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int inbyte(void) {
  char ch = 0;
  read(0, &ch, 1);
  return ch;
}
```
user: 这段汇编代码用C语言表示是什么样的?

```asm
<inbyte>:
  endbr64
  sub    $0x18,%rsp
  mov    $0x1,%edx
  xor    %edi,%edi
  mov    %fs:0x28,%rax
  mov    %rax,0x8(%rsp)
  xor    %eax,%eax
  lea    0x7(%rsp),%rsi
  movb   $0x0,0x7(%rsp)
  call   <read@plt>
  movsbl 0x7(%rsp),%eax
  mov    0x8(%rsp),%rdx
  sub    %fs:0x28,%rdx
  jne    L0
  add    $0x18,%rsp
  ret
L0:
  call   <__stack_chk_fail@plt>
```

assistant: ```c
int inbyte(void) {
  char ch = 0;
  read(0, &ch, 1);
  return ch;
}
```
user: 下面的汇编指令对应的C源代码是什么：

```asm
<main>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x20,%rsp
  mov    %edi,-0x14(%rbp)
  mov    %rsi,-0x20(%rbp)
  mov    $0x0,%eax
  call   <rand@plt>
  mov    %eax,-0x4(%rbp)
  cmpl   $0x0,-0x4(%rbp)
  jle    L4
  movl   $0x2a,-0x8(%rbp)
  jmp    L12
L4:
  movl   $0x7,-0x8(%rbp)
L12:
  mov    -0x8(%rbp),%eax
  leave
  ret
```

assistant: ```c
int main(int argc, char **argv) {
  int x;
  int r = rand();
  if (!(r <= 0)) {
    x = 42;
  } else {
    x = 7;
  }
  return x;
}
```
user: 提供的汇编代码用C语言表示会是什么样子：

```asm
<main>:
  endbr64
  sub    $0x8,%rsp
  mov    $0x0,%eax
  call   <rand@plt>
  test   %eax,%eax
  mov    $0x2a,%eax
  mov    $0x7,%edx
  cmovle %edx,%eax
  add    $0x8,%rsp
  ret
```

assistant: ```c
int main(int argc, char **argv) {
  int x;
  int r = rand();
  if (!(r <= 0)) {
    x = 42;
  } else {
    x = 7;
  }
  return x;
}
```
user: What would the C source look like for the assembly code provided here:

```asm
<main>:
  endbr64
  sub    $0x8,%rsp
  xor    %eax,%eax
  call   <rand@plt>
  mov    $0x7,%edx
  test   %eax,%eax
  mov    $0x2a,%eax
  cmovle %edx,%eax
  add    $0x8,%rsp
  ret
```

assistant: ```c
int main(int argc, char **argv) {
  int x;
  int r = rand();
  if (!(r <= 0)) {
    x = 42;
  } else {
    x = 7;
  }
  return x;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<main>:
  endbr64
  sub    $0x8,%rsp
  xor    %eax,%eax
  call   <rand@plt>
  mov    $0x7,%edx
  test   %eax,%eax
  mov    $0x2a,%eax
  cmovle %edx,%eax
  add    $0x8,%rsp
  ret
```

assistant: ```c
int main(int argc, char **argv) {
  int x;
  int r = rand();
  if (!(r <= 0)) {
    x = 42;
  } else {
    x = 7;
  }
  return x;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<fft>:
  endbr64
  push   %r13
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%r9
  mov    %rsi,%r8
  mov    %rdx,%rbp
  mov    %rcx,%rbx
  mov    $0x0,%ecx
  mov    $0x200,%r10d
  jmp    L54
L60:
  lea    0x1(%rdi),%eax
  cmp    $0x3ff,%eax
  jg     L67
L28:
  mov    %eax,%edi
  or     %r10d,%edi
  and    %r11d,%eax
  movslq %eax,%r12
  shl    $0x3,%r12
  lea    (%r9,%r12,1),%r13
  movsd  0x0(%r13),%xmm0
  movslq %edi,%rdx
  shl    $0x3,%rdx
  lea    (%r9,%rdx,1),%rsi
  movsd  (%rsi),%xmm1
  movapd %xmm0,%xmm2
  subsd  %xmm1,%xmm2
  movsd  %xmm2,(%rsi)
  addsd  %xmm1,%xmm0
  movsd  %xmm0,0x0(%r13)
  add    %r8,%r12
  movsd  (%r12),%xmm0
  add    %r8,%rdx
  movsd  (%rdx),%xmm1
  movapd %xmm0,%xmm2
  subsd  %xmm1,%xmm2
  movsd  %xmm2,(%rdx)
  addsd  %xmm1,%xmm0
  movsd  %xmm0,(%r12)
  shl    %cl,%eax
  and    $0x3ff,%eax
  je     L60
  cltq
  movsd  0x0(%rbp,%rax,8),%xmm0
  movsd  (%rsi),%xmm4
  movsd  (%rbx,%rax,8),%xmm3
  movsd  (%rdx),%xmm1
  movapd %xmm0,%xmm2
  mulsd  %xmm1,%xmm2
  movapd %xmm4,%xmm5
  mulsd  %xmm3,%xmm5
  addsd  %xmm5,%xmm2
  movsd  %xmm2,(%rdx)
  mulsd  %xmm4,%xmm0
  mulsd  %xmm3,%xmm1
  subsd  %xmm1,%xmm0
  movsd  %xmm0,(%rsi)
  jmp    L60
L67:
  sar    %r10d
  add    $0x1,%ecx
  cmp    $0xa,%ecx
  je     L34
L54:
  mov    %r10d,%eax
  mov    %r10d,%r11d
  not    %r11d
  cmp    $0x3ff,%r10d
  jle    L28
  jmp    L67
L34:
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
```

assistant: ```c
void fft(double real[1024], double img[1024], double real_twid[1024 / 2], double img_twid[1024 / 2]) {
  int even, odd, span, log, rootindex;
  double temp;
  log = 0;
outer:
  for (span = 1024 >> 1; span; span >>= 1, log++) {
  inner:
    for (odd = span; odd < 1024; odd++) {
      odd |= span;
      even = odd ^ span;
      temp = real[even] + real[odd];
      real[odd] = real[even] - real[odd];
      real[even] = temp;
      temp = img[even] + img[odd];
      img[odd] = img[even] - img[odd];
      img[even] = temp;
      rootindex = (even << log) & (1024 - 1);
      if (rootindex) {
        temp = real_twid[rootindex] * real[odd] - img_twid[rootindex] * img[odd];
        img[odd] = real_twid[rootindex] * img[odd] + img_twid[rootindex] * real[odd];
        real[odd] = temp;
      }
    }
  }
}
```
user: Translate the below assembly code into C programming language:

```asm
<fft>:
  endbr64
  push   %r13
  mov    %rdi,%r9
  mov    %rsi,%r8
  mov    $0x200,%r10d
  push   %r12
  push   %rbp
  mov    %rdx,%rbp
  push   %rbx
  mov    %rcx,%rbx
  xor    %ecx,%ecx
  xchg   %ax,%ax
L4:
  mov    %r10d,%r11d
  mov    %r10d,%eax
  not    %r11d
  nopl   0x0(%rax)
L24:
  mov    %eax,%edi
  and    %r11d,%eax
  movslq %eax,%r12
  or     %r10d,%edi
  shl    %cl,%eax
  shl    $0x3,%r12
  movslq %edi,%rdx
  lea    (%r9,%r12,1),%r13
  shl    $0x3,%rdx
  add    %r8,%r12
  movsd  0x0(%r13),%xmm0
  lea    (%r9,%rdx,1),%rsi
  add    %r8,%rdx
  movsd  (%rsi),%xmm1
  movapd %xmm0,%xmm2
  subsd  %xmm1,%xmm2
  addsd  %xmm1,%xmm0
  movsd  %xmm2,(%rsi)
  movsd  %xmm0,0x0(%r13)
  movsd  (%r12),%xmm0
  movsd  (%rdx),%xmm1
  movapd %xmm0,%xmm2
  addsd  %xmm1,%xmm0
  subsd  %xmm1,%xmm2
  movsd  %xmm2,(%rdx)
  movsd  %xmm0,(%r12)
  and    $0x3ff,%eax
  je     L18
  cltq
  movsd  (%rsi),%xmm4
  movsd  (%rdx),%xmm3
  movsd  0x0(%rbp,%rax,8),%xmm0
  movsd  (%rbx,%rax,8),%xmm1
  movapd %xmm4,%xmm5
  mulsd  %xmm1,%xmm5
  movapd %xmm0,%xmm2
  mulsd  %xmm3,%xmm2
  mulsd  %xmm4,%xmm0
  mulsd  %xmm3,%xmm1
  addsd  %xmm5,%xmm2
  subsd  %xmm1,%xmm0
  movsd  %xmm2,(%rdx)
  movsd  %xmm0,(%rsi)
L18:
  lea    0x1(%rdi),%eax
  cmp    $0x3ff,%eax
  jle    L24
  add    $0x1,%ecx
  sar    %r10d
  cmp    $0xa,%ecx
  jne    L4
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
```

assistant: ```c
void fft(double real[1024], double img[1024], double real_twid[1024 / 2], double img_twid[1024 / 2]) {
  int even, odd, span, log, rootindex;
  double temp;
  log = 0;
outer:
  for (span = 1024 >> 1; span; span >>= 1, log++) {
  inner:
    for (odd = span; odd < 1024; odd++) {
      odd |= span;
      even = odd ^ span;
      temp = real[even] + real[odd];
      real[odd] = real[even] - real[odd];
      real[even] = temp;
      temp = img[even] + img[odd];
      img[odd] = img[even] - img[odd];
      img[even] = temp;
      rootindex = (even << log) & (1024 - 1);
      if (rootindex) {
        temp = real_twid[rootindex] * real[odd] - img_twid[rootindex] * img[odd];
        img[odd] = real_twid[rootindex] * img[odd] + img_twid[rootindex] * real[odd];
        real[odd] = temp;
      }
    }
  }
}
```
user: Converte this assembly snippet into its equivalent C code:

```asm
<fft>:
  endbr64
  push   %r13
  mov    %rdi,%r9
  mov    %rsi,%r8
  mov    $0x200,%r10d
  push   %r12
  push   %rbp
  mov    %rdx,%rbp
  push   %rbx
  mov    %rcx,%rbx
  xor    %ecx,%ecx
  xchg   %ax,%ax
L20:
  mov    %r10d,%r11d
  mov    %r10d,%eax
  not    %r11d
  nopl   0x0(%rax)
L19:
  mov    %eax,%edi
  and    %r11d,%eax
  movslq %eax,%r12
  or     %r10d,%edi
  shl    %cl,%eax
  shl    $0x3,%r12
  movslq %edi,%rdx
  lea    (%r9,%r12,1),%r13
  shl    $0x3,%rdx
  add    %r8,%r12
  movsd  0x0(%r13),%xmm0
  lea    (%r9,%rdx,1),%rsi
  add    %r8,%rdx
  movsd  (%rsi),%xmm1
  movapd %xmm0,%xmm2
  subsd  %xmm1,%xmm2
  addsd  %xmm1,%xmm0
  movsd  %xmm2,(%rsi)
  movsd  %xmm0,0x0(%r13)
  movsd  (%r12),%xmm0
  movsd  (%rdx),%xmm1
  movapd %xmm0,%xmm2
  addsd  %xmm1,%xmm0
  subsd  %xmm1,%xmm2
  movsd  %xmm2,(%rdx)
  movsd  %xmm0,(%r12)
  and    $0x3ff,%eax
  je     L25
  cltq
  movsd  (%rsi),%xmm4
  movsd  (%rdx),%xmm3
  movsd  0x0(%rbp,%rax,8),%xmm0
  movsd  (%rbx,%rax,8),%xmm1
  movapd %xmm4,%xmm5
  mulsd  %xmm1,%xmm5
  movapd %xmm0,%xmm2
  mulsd  %xmm3,%xmm2
  mulsd  %xmm4,%xmm0
  mulsd  %xmm3,%xmm1
  addsd  %xmm5,%xmm2
  subsd  %xmm1,%xmm0
  movsd  %xmm2,(%rdx)
  movsd  %xmm0,(%rsi)
L25:
  lea    0x1(%rdi),%eax
  cmp    $0x3ff,%eax
  jle    L19
  add    $0x1,%ecx
  sar    %r10d
  cmp    $0xa,%ecx
  jne    L20
  pop    %rbx
  pop    %rbp
  pop    %r12
  pop    %r13
  ret
```

assistant: ```c
void fft(double real[1024], double img[1024], double real_twid[1024 / 2], double img_twid[1024 / 2]) {
  int even, odd, span, log, rootindex;
  double temp;
  log = 0;
outer:
  for (span = 1024 >> 1; span; span >>= 1, log++) {
  inner:
    for (odd = span; odd < 1024; odd++) {
      odd |= span;
      even = odd ^ span;
      temp = real[even] + real[odd];
      real[odd] = real[even] - real[odd];
      real[even] = temp;
      temp = img[even] + img[odd];
      img[odd] = img[even] - img[odd];
      img[even] = temp;
      rootindex = (even << log) & (1024 - 1);
      if (rootindex) {
        temp = real_twid[rootindex] * real[odd] - img_twid[rootindex] * img[odd];
        img[odd] = real_twid[rootindex] * img[odd] + img_twid[rootindex] * real[odd];
        real[odd] = temp;
      }
    }
  }
}
```
user: 请将这段汇编代码片段转换成等效的C代码:

```asm
<defangIPaddr>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x30,%rsp
  mov    %rdi,-0x28(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  add    $0x6,%eax
  mov    %eax,-0x1c(%rbp)
  mov    -0x1c(%rbp),%eax
  add    $0x1,%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x8(%rbp)
  mov    -0x1c(%rbp),%edx
  mov    -0x8(%rbp),%rax
  mov    $0x30,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  mov    -0x1c(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x8(%rbp),%rax
  add    %rdx,%rax
  movb   $0x0,(%rax)
  mov    -0x8(%rbp),%rax
  mov    %rax,-0x18(%rbp)
  mov    -0x28(%rbp),%rax
  mov    %rax,-0x10(%rbp)
  jmp    L36
L28:
  mov    -0x10(%rbp),%rax
  movzbl (%rax),%eax
  cmp    $0x2e,%al
  jne    L1
  mov    -0x18(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x18(%rbp)
  movb   $0x5b,(%rax)
  mov    -0x18(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x18(%rbp)
  movb   $0x2e,(%rax)
  mov    -0x18(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x18(%rbp)
  movb   $0x5d,(%rax)
  jmp    L10
L1:
  mov    -0x18(%rbp),%rax
  lea    0x1(%rax),%rdx
  mov    %rdx,-0x18(%rbp)
  mov    -0x10(%rbp),%rdx
  movzbl (%rdx),%edx
  mov    %dl,(%rax)
L10:
  addq   $0x1,-0x10(%rbp)
L36:
  mov    -0x10(%rbp),%rax
  movzbl (%rax),%eax
  test   %al,%al
  jne    L28
  mov    -0x8(%rbp),%rax
  leave
  ret
```

assistant: ```c
char *defangIPaddr(char *address) {
  int len = strlen(address) + 6;
  char *defang = malloc(sizeof(char) * (len + 1));
  memset(defang, '0', len);
  defang[len] = '\0';
  char *p1 = defang, *p2 = address;
  while (*p2 != '\0') {
    if (*p2 == '.') {
      *p1++ = '[';
      *p1++ = '.';
      *p1++ = ']';
    } else {
      *p1++ = *p2;
    }
    p2++;
  }
  return defang;
}
```
user: What would the C source look like for the assembly code provided here?

```asm
<defangIPaddr>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbx
  call   <strlen@plt>
  lea    0x6(%rax),%r12d
  lea    0x7(%rax),%edi
  call   <malloc@plt>
  mov    %rax,%rbp
  mov    %r12d,%edx
  mov    $0x30,%esi
  mov    %rax,%rdi
  call   <memset@plt>
  movslq %r12d,%r12
  movb   $0x0,0x0(%rbp,%r12,1)
  movzbl (%rbx),%eax
  test   %al,%al
  je     L34
  mov    %rbp,%rdx
  jmp    L18
L4:
  movb   $0x5b,(%rdx)
  movb   $0x2e,0x1(%rdx)
  movb   $0x5d,0x2(%rdx)
  lea    0x3(%rdx),%rdx
L29:
  add    $0x1,%rbx
  movzbl (%rbx),%eax
  test   %al,%al
  je     L34
L18:
  cmp    $0x2e,%al
  je     L4
  mov    %al,(%rdx)
  lea    0x1(%rdx),%rdx
  jmp    L29
L34:
  mov    %rbp,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
char *defangIPaddr(char *address) {
  int len = strlen(address) + 6;
  char *defang = malloc(sizeof(char) * (len + 1));
  memset(defang, '0', len);
  defang[len] = '\0';
  char *p1 = defang, *p2 = address;
  while (*p2 != '\0') {
    if (*p2 == '.') {
      *p1++ = '[';
      *p1++ = '.';
      *p1++ = ']';
    } else {
      *p1++ = *p2;
    }
    p2++;
  }
  return defang;
}
```
user: 请显示与下面列出的汇编代码相匹配的C语言实现:

```asm
<defangIPaddr>:
  endbr64
  push   %r12
  push   %rbp
  push   %rbx
  mov    %rdi,%rbx
  call   <strlen@plt>
  lea    0x7(%rax),%edi
  lea    0x6(%rax),%ebp
  call   <malloc@plt>
  mov    %ebp,%edx
  mov    $0x30,%esi
  movslq %ebp,%rbp
  mov    %rax,%r12
  mov    %rax,%rdi
  call   <memset@plt>
  movb   $0x0,(%r12,%rbp,1)
  movzbl (%rbx),%eax
  test   %al,%al
  je     L3
  mov    %r12,%rdx
  jmp    L4
  nopl   0x0(%rax)
L14:
  add    $0x1,%rbx
  mov    %al,(%rdx)
  add    $0x1,%rdx
  movzbl (%rbx),%eax
  test   %al,%al
  je     L3
L4:
  cmp    $0x2e,%al
  jne    L14
  mov    $0x2e5b,%eax
  add    $0x1,%rbx
  movb   $0x5d,0x2(%rdx)
  add    $0x3,%rdx
  mov    %ax,-0x3(%rdx)
  movzbl (%rbx),%eax
  test   %al,%al
  jne    L4
L3:
  mov    %r12,%rax
  pop    %rbx
  pop    %rbp
  pop    %r12
  ret
```

assistant: ```c
char *defangIPaddr(char *address) {
  int len = strlen(address) + 6;
  char *defang = malloc(sizeof(char) * (len + 1));
  memset(defang, '0', len);
  defang[len] = '\0';
  char *p1 = defang, *p2 = address;
  while (*p2 != '\0') {
    if (*p2 == '.') {
      *p1++ = '[';
      *p1++ = '.';
      *p1++ = ']';
    } else {
      *p1++ = *p2;
    }
    p2++;
  }
  return defang;
}
```