Something

int __usercall sub_5C81E0<eax>(CDataStore *a1<ecx>, int _EDI<edi>, int _ESI<esi>){  int result; // eax@1  int value; // [sp+18h] [bp-4h]@1  int v5; // [sp+Ch] [bp-10h]@1  signed int v6; // [sp+10h] [bp-Ch]@1  signed int v8; // [sp+14h] [bp-8h]@1  CDataStore_ReadInt32(a1, &value);  v5 = (value & 0x7FF) << 21 >> 21;  __asm  {    fild    [ebp+var_10]    fld     ds:dbl_8901E8  }  v6 = (signed int)((((unsigned int)value >> 11) & 0x7FF) << 21) >> 21;  __asm  {    fmul    st(1), st    fxch    st(1)    fstp    [ebp+var_1C]  }  v8 = (signed int)((unsigned int)value >> 22 << 22) >> 22;  __asm { fild    [ebp+var_C] }  result = _ESI;  __asm  {    fmul    st, st(1)    fstp    [ebp+var_18]    fimul   [ebp+var_8]    fstp    [ebp+var_14]    fld     dword ptr [edi]    fsub    [ebp+var_1C]    fstp    dword ptr [esi]    fld     dword ptr [edi+4]    fsub    [ebp+var_18]    fstp    dword ptr [esi+4]    fld     dword ptr [edi+8]    fsub    [ebp+var_14]    fstp    dword ptr [esi+8]  }  return result;}