UefiCpuPkg/Include/Library/UefiCpuLib.h

   1 /** @file
   2   Public header file for UEFI CPU library class.
   3
   4   This library class defines some routines that are generic for IA32 family CPU
   5   to be UEFI specification compliant.
   6
   7   Copyright (c) 2009, Intel Corporation. All rights reserved.<BR>
   8   SPDX-License-Identifier: BSD-2-Clause-Patent
   9
  10 **/
  11
  12 #ifndef __UEFI_CPU_LIB_H__
  13 #define __UEFI_CPU_LIB_H__
  14
  15
  16
  17 /**
  18   Initializes floating point units for requirement of UEFI specification.
  19
  20   This function initializes floating-point control word to 0x027F (all exceptions
  21   masked,double-precision, round-to-nearest) and multimedia-extensions control word
  22   (if supported) to 0x1F80 (all exceptions masked, round-to-nearest, flush to zero
  23   for masked underflow).
  24
  25 **/
  26 VOID
  27 EFIAPI
  28 InitializeFloatingPointUnits (
  29   VOID
  30   );
  31
  32 #endif