user: 请显示与下面列出的汇编代码相匹配的C语言实现：

```asm
<_acosf>:
  endbr64
  sub    $0x18,%rsp
  movaps %xmm0,%xmm4
  movss  %xmm0,0x8(%rsp)
  pxor   %xmm2,%xmm2
  movaps %xmm0,%xmm1
  xorps  D6(%rip),%xmm1
  cmpltss %xmm2,%xmm0
  andps  %xmm0,%xmm1
  andnps %xmm4,%xmm0
  orps   %xmm0,%xmm1
  comiss D21(%rip),%xmm1
  jbe    L51
  movaps %xmm2,%xmm0
  comiss D187(%rip),%xmm1
  jbe    L91
L39:
  add    $0x18,%rsp
  ret
L91:
  movss  D187(%rip),%xmm0
  subss  %xmm1,%xmm0
  mulss  D21(%rip),%xmm0
  movaps %xmm0,%xmm6
  movss  %xmm0,0xc(%rsp)
  ucomiss %xmm0,%xmm2
  ja     L60
  sqrtss %xmm6,%xmm6
  movaps %xmm6,%xmm0
L67:
  mulss  D53(%rip),%xmm0
  movss  0xc(%rsp),%xmm5
  movaps %xmm5,%xmm1
  mulss  D113(%rip),%xmm1
  addss  D111(%rip),%xmm1
  mulss  %xmm5,%xmm1
  subss  D58(%rip),%xmm1
  movaps %xmm5,%xmm2
  subss  D184(%rip),%xmm2
  mulss  %xmm5,%xmm2
  addss  D52(%rip),%xmm2
  mulss  %xmm5,%xmm2
  mulss  %xmm5,%xmm1
  subss  D26(%rip),%xmm2
  divss  %xmm2,%xmm1
  mulss  %xmm0,%xmm1
  addss  %xmm1,%xmm0
  pxor   %xmm1,%xmm1
  comiss 0x8(%rsp),%xmm1
  jbe    L98
  movss  D108(%rip),%xmm1
  addss  %xmm1,%xmm0
  addss  %xmm1,%xmm0
  jmp    L39
L60:
  movss  0xc(%rsp),%xmm0
  call   <sqrtf@plt>
  jmp    L67
L51:
  movss  D171(%rip),%xmm0
  comiss %xmm1,%xmm0
  ja     L17
  movaps %xmm1,%xmm0
  mulss  %xmm1,%xmm0
  movaps %xmm0,%xmm3
  mulss  D113(%rip),%xmm3
  addss  D111(%rip),%xmm3
  mulss  %xmm0,%xmm3
  subss  D58(%rip),%xmm3
  movaps %xmm0,%xmm2
  subss  D184(%rip),%xmm2
  mulss  %xmm0,%xmm2
  addss  D52(%rip),%xmm2
  mulss  %xmm0,%xmm2
  mulss  %xmm3,%xmm0
  subss  D26(%rip),%xmm2
  divss  %xmm2,%xmm0
  mulss  %xmm1,%xmm0
  addss  %xmm0,%xmm1
  pxor   %xmm0,%xmm0
  comiss 0x8(%rsp),%xmm0
  ja     L104
  movss  D181(%rip),%xmm2
  movaps %xmm2,%xmm0
  subss  %xmm1,%xmm0
  addss  %xmm2,%xmm0
  jmp    L39
L17:
  pxor   %xmm0,%xmm0
  comiss 0x8(%rsp),%xmm0
  ja     L27
  movss  D181(%rip),%xmm2
  movaps %xmm2,%xmm0
  subss  %xmm1,%xmm0
  addss  %xmm2,%xmm0
  jmp    L39
L27:
  movss  D181(%rip),%xmm2
  addss  %xmm2,%xmm1
  movaps %xmm1,%xmm0
  addss  %xmm2,%xmm0
  jmp    L39
L104:
  movss  D181(%rip),%xmm0
  addss  %xmm0,%xmm1
  addss  %xmm1,%xmm0
  jmp    L39
L98:
  xorps  D6(%rip),%xmm0
  jmp    L39
```

tool_calls: name: retrieve_data
arguments: tag: D6
datatype: byte[16]
name: retrieve_data
arguments: tag: D21
datatype: f32
name: retrieve_data
arguments: tag: D187
datatype: f32
name: retrieve_data
arguments: tag: D53
datatype: byte[4]
name: retrieve_data
arguments: tag: D113
datatype: byte[4]
name: retrieve_data
arguments: tag: D111
datatype: byte[4]
name: retrieve_data
arguments: tag: D58
datatype: byte[4]
name: retrieve_data
arguments: tag: D184
datatype: byte[4]
name: retrieve_data
arguments: tag: D52
datatype: byte[4]
name: retrieve_data
arguments: tag: D26
datatype: byte[4]
name: retrieve_data
arguments: tag: D108
datatype: f32
name: retrieve_data
arguments: tag: D171
datatype: byte[4]
name: retrieve_data
arguments: tag: D181
datatype: f32

tool: {"D6": [0x00,0x00,0x00,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00]}

tool: D21: 0.5

tool: D187: 1

tool: {"D53": [0x00,0x00,0x00,0xc0]}

tool: {"D113": [0x3f,0x31,0x18,0xbf]}

tool: {"D111": [0xe0,0xf9,0x39,0x40]}

tool: {"D58": [0x20,0x1b,0x30,0x40]}

tool: {"D184": [0x85,0x57,0x25,0x41]}

tool: {"D52": [0xf7,0xea,0xc6,0x41]}

tool: {"D26": [0x58,0x14,0x84,0x41]}

tool: D108: 1.5707963267948966

tool: {"D171": [0xf3,0x04,0xb5,0x39]}

tool: D181: 0.7853981633974483

assistant: ```c
float _acosf(float x) {
  float y, g;
  float num, den, result;
  long int i;
  y = x;
  if (y < (float)0.0) {
    y = -y;
  }
  if (y > (float)0.5) {
    i = 0;
    if (y > (float)1.0) {
      result = 0.0;
      return result;
    }
    g = ((float)(1.0) - (float)(y));
    g = ((float)(0.5) * (float)(g));
    y = sqrtf(g);
    y = ((float)(y) * (float)(-2.0));
  } else {
    i = 1;
    if (y < (float)(+3.452669830012e-4F)) {
      result = y;
      if (x < (float)0.0) {
        result = ((float)((float)(0.78539816339744830961566084581988L)) + (float)(result));
        result = ((float)(result) + (float)((float)(0.78539816339744830961566084581988L)));
      } else {
        result = ((float)((float)(0.78539816339744830961566084581988L)) - (float)(result));
        result = ((float)(result) + (float)((float)(0.78539816339744830961566084581988L)));
      }
      return result;
    }
    g = ((float)(y) * (float)(y));
  }
  num = ((float)((-5.9450144193246e-1F)) * (float)(g));
  num = ((float)(num) + (float)((+2.9058762374859F)));
  num = ((float)(num) * (float)(g));
  num = ((float)(num) + (float)((-2.7516555290596F)));
  num = ((float)(num) * (float)(g));
  den = ((float)(g) + (float)((-1.0333867072113e+1F)));
  den = ((float)(den) * (float)(g));
  den = ((float)(den) + (float)((+2.4864728969164e+1F)));
  den = ((float)(den) * (float)(g));
  den = ((float)(den) + (float)((-1.6509933202424e+1F)));
  result = ((float)(num) / (float)(den));
  result = ((float)(result) * (float)(y));
  result = ((float)(result) + (float)(y));
  if (x < (float)0.0) {
    if (i == 0) {
      result = ((float)(result) + (float)((float)(1.5707963267948966192313216916398L)));
      result = ((float)(result) + (float)((float)(1.5707963267948966192313216916398L)));
    } else {
      result = ((float)((float)(0.78539816339744830961566084581988L)) + (float)(result));
      result = ((float)(result) + (float)((float)(0.78539816339744830961566084581988L)));
    }
  } else {
    if (i == 1) {
      result = ((float)((float)(0.78539816339744830961566084581988L)) - (float)(result));
      result = ((float)(result) + (float)((float)(0.78539816339744830961566084581988L)));
    } else {
      result = -result;
    }
  }
  return result;
}
```