CryptoPkg/Library/IntrinsicLib/Ia32/MathFtol.c

   1 /** @file
   2   64-bit Math Worker Function.
   3   The 32-bit versions of C compiler generate calls to library routines
   4   to handle 64-bit math. These functions use non-standard calling conventions.
   5
   6 Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>
   7 SPDX-License-Identifier: BSD-2-Clause-Patent
   8
   9 **/
  10
  11 /*
  12  * Floating point to integer conversion.
  13  */
  14 __declspec(naked) void
  15 _ftol2 (
  16   void
  17   )
  18 {
  19   _asm {
  20     fistp qword ptr [esp-8]
  21     mov   edx, [esp-4]
  22     mov   eax, [esp-8]
  23     ret
  24   }
  25 }