user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<atan2>:
  endbr64
  movq   %xmm1,%rdx
  movq   %xmm1,%rsi
  sar    $0x20,%rsi
  mov    %esi,%edi
  and    $0x7fffffff,%edi
  movd   %xmm1,%eax
  neg    %eax
  or     %edx,%eax
  shr    $0x1f,%eax
  or     %edi,%eax
  cmp    $0x7ff00000,%eax
  ja     L375
  movq   %xmm0,%rcx
  movq   %xmm0,%r9
  sar    $0x20,%r9
  mov    %r9d,%r8d
  and    $0x7fffffff,%r8d
  movd   %xmm0,%eax
  neg    %eax
  or     %ecx,%eax
  shr    $0x1f,%eax
  or     %r8d,%eax
  cmp    $0x7ff00000,%eax
  ja     L375
  push   %rbx
  lea    -0x3ff00000(%rsi),%eax
  or     %edx,%eax
  je     L229
  mov    %esi,%ebx
  sar    $0x1e,%ebx
  and    $0x2,%ebx
  mov    %r9d,%eax
  shr    $0x1f,%eax
  or     %eax,%ebx
  or     %r8d,%ecx
  jne    L320
  cmp    $0x2,%ebx
  je     L239
  movsd  D68(%rip),%xmm2
  jg     L177
  movapd %xmm0,%xmm2
  cmp    $0x1,%ebx
  jbe    L177
L320:
  or     %edi,%edx
  je     L373
  cmp    $0x7ff00000,%edi
  je     L166
  cmp    $0x7ff00000,%r8d
  je     L312
L61:
  sub    %edi,%r8d
  mov    %r8d,%eax
  sar    $0x14,%eax
  movsd  D142(%rip),%xmm2
  cmp    $0x3cfffff,%r8d
  jg     L266
  test   %esi,%esi
  jns    L22
  pxor   %xmm2,%xmm2
  cmp    $0xffffffc4,%eax
  jge    L22
L266:
  cmp    $0x1,%ebx
  je     L288
  cmp    $0x2,%ebx
  je     L183
  test   %ebx,%ebx
  je     L177
  subsd  D26(%rip),%xmm2
  subsd  D117(%rip),%xmm2
  jmp    L177
L375:
  movapd %xmm1,%xmm2
  addsd  %xmm0,%xmm2
  movapd %xmm2,%xmm0
  ret
L229:
  call   <atan@plt>
  movapd %xmm0,%xmm2
L177:
  movapd %xmm2,%xmm0
  pop    %rbx
  ret
L373:
  movsd  D127(%rip),%xmm2
  test   %r9d,%r9d
  js     L177
  movsd  D142(%rip),%xmm2
  jmp    L177
L166:
  cmp    $0x7ff00000,%r8d
  je     L219
  cmp    $0x2,%ebx
  je     L284
  movsd  D68(%rip),%xmm2
  jg     L177
  pxor   %xmm2,%xmm2
  test   %ebx,%ebx
  je     L177
  cmp    $0x1,%ebx
  jne    L61
  movsd  D154(%rip),%xmm2
  jmp    L177
L219:
  cmp    $0x2,%ebx
  je     L199
  movsd  D145(%rip),%xmm2
  jg     L177
  movsd  D92(%rip),%xmm2
  test   %ebx,%ebx
  je     L177
  cmp    $0x1,%ebx
  jne    L312
  movsd  D71(%rip),%xmm2
  jmp    L177
L312:
  movsd  D127(%rip),%xmm2
  test   %r9d,%r9d
  js     L177
  movsd  D142(%rip),%xmm2
  jmp    L177
L22:
  divsd  %xmm1,%xmm0
  andpd  D59(%rip),%xmm0
  call   <atan@plt>
  movapd %xmm0,%xmm2
  jmp    L266
L288:
  movq   %xmm2,%rax
  movq   %xmm2,%rdx
  sar    $0x20,%rdx
  lea    -0x80000000(%rdx),%edx
  shl    $0x20,%rdx
  mov    %eax,%eax
  or     %rdx,%rax
  movq   %rax,%xmm2
  jmp    L177
L183:
  subsd  D26(%rip),%xmm2
  movapd %xmm2,%xmm0
  movsd  D117(%rip),%xmm2
  subsd  %xmm0,%xmm2
  jmp    L177
L239:
  movsd  D117(%rip),%xmm2
  jmp    L177
L199:
  movsd  D131(%rip),%xmm2
  jmp    L177
L284:
  movsd  D117(%rip),%xmm2
  jmp    L177
```

tool_calls: name: disassemble_data
arguments: data_label: D68
data_type: byte[8]
name: disassemble_data
arguments: data_label: D142
data_type: byte[8]
name: disassemble_data
arguments: data_label: D26
data_type: byte[8]
name: disassemble_data
arguments: data_label: D117
data_type: byte[8]
name: disassemble_data
arguments: data_label: D127
data_type: byte[8]
name: disassemble_data
arguments: data_label: D154
data_type: f32[2]
name: disassemble_data
arguments: data_label: D145
data_type: byte[8]
name: disassemble_data
arguments: data_label: D92
data_type: byte[8]
name: disassemble_data
arguments: data_label: D71
data_type: byte[8]
name: disassemble_data
arguments: data_label: D59
data_type: qword[2]
name: disassemble_data
arguments: data_label: D131
data_type: byte[8]

tool: {"D68": [0x18,0x2d,0x44,0x54,0xfb,0x21,0x09,0xc0]}

tool: {"D142": [0x18,0x2d,0x44,0x54,0xfb,0x21,0xf9,0x3f]}

tool: {"D26": [0x07,0x5c,0x14,0x33,0x26,0xa6,0xa1,0x3c]}

tool: {"D117": [0x18,0x2d,0x44,0x54,0xfb,0x21,0x09,0x40]}

tool: {"D127": [0x18,0x2d,0x44,0x54,0xfb,0x21,0xf9,0xbf]}

tool: {"D154": [0.0,-0.0]}

tool: {"D145": [0xd2,0x21,0x33,0x7f,0x7c,0xd9,0x02,0xc0]}

tool: {"D92": [0x18,0x2d,0x44,0x54,0xfb,0x21,0xe9,0x3f]}

tool: {"D71": [0x18,0x2d,0x44,0x54,0xfb,0x21,0xe9,0xbf]}

tool: {"D59": [0x7fffffffffffffff,0x0000000000000000]}

tool: {"D131": [0xd2,0x21,0x33,0x7f,0x7c,0xd9,0x02,0x40]}

assistant: ```c
double atan2(double y, double x) {
  double z;
  int k, m, hx, hy, ix, iy;
  unsigned lx, ly;
  hx = *(1 + (int *)&x);
  ix = hx & 0x7fffffff;
  lx = *(int *)&x;
  hy = *(1 + (int *)&y);
  iy = hy & 0x7fffffff;
  ly = *(int *)&y;
  if (((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000)) {
    return x + y;
  }
  if (((hx - 0x3ff00000) | lx) == 0) {
    return atan(y);
  }
  m = ((hy >> 31) & 1) | ((hx >> 30) & 2);
  if ((iy | ly) == 0) {
    switch (m) {
    case 0:
    case 1: {
      return y;
    }
    case 2: {
      return 3.1415926535897931160E+00 + 1.0e-300;
    }
    case 3: {
      return -3.1415926535897931160E+00 - 1.0e-300;
    }
    }
  }
  if ((ix | lx) == 0) {
    return (hy < 0) ? -1.5707963267948965580E+00 - 1.0e-300 : 1.5707963267948965580E+00 + 1.0e-300;
  }
  if (ix == 0x7ff00000) {
    if (iy == 0x7ff00000) {
      switch (m) {
      case 0: {
        return 7.8539816339744827900E-01 + 1.0e-300;
      }
      case 1: {
        return -7.8539816339744827900E-01 - 1.0e-300;
      }
      case 2: {
        return 3.0 * 7.8539816339744827900E-01 + 1.0e-300;
      }
      case 3: {
        return -3.0 * 7.8539816339744827900E-01 - 1.0e-300;
      }
      }
    } else {
      switch (m) {
      case 0: {
        return 0.0;
      }
      case 1: {
        return -0.0;
      }
      case 2: {
        return 3.1415926535897931160E+00 + 1.0e-300;
      }
      case 3: {
        return -3.1415926535897931160E+00 - 1.0e-300;
      }
      }
    }
  }
  if (iy == 0x7ff00000) {
    return (hy < 0) ? -1.5707963267948965580E+00 - 1.0e-300 : 1.5707963267948965580E+00 + 1.0e-300;
  }
  k = (iy - ix) >> 20;
  if (k > 60) {
    z = 1.5707963267948965580E+00 + 0.5 * 1.2246467991473531772E-16;
  } else if (hx < 0 && k < -60) {
    z = 0.0;
  } else {
    z = atan(fabs(y / x));
  }
  switch (m) {
  case 0: {
    return z;
  }
  case 1: {
    *(1 + (int *)&z) ^= 0x80000000;
    return z;
  }
  case 2: {
    return 3.1415926535897931160E+00 - (z - 1.2246467991473531772E-16);
  }
  default: {
    return (z - 1.2246467991473531772E-16) - 3.1415926535897931160E+00;
  }
  }
}
```