[mirror_edk2.git] / CryptoPkg / Library / IntrinsicLib / Ia32 / MathFtol.c

/** @file\r
  64-bit Math Worker Function.\r
  The 32-bit versions of C compiler generate calls to library routines\r
  to handle 64-bit math. These functions use non-standard calling conventions.\r
\r
Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>\r
SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
/*\r
 * Floating point to integer conversion.\r
 */\r
__declspec(naked) void\r
_ftol2 (\r
  void\r
  )\r
{\r
  _asm {\r
    fistp qword ptr [esp-8]\r
    mov   edx, [esp-4]\r
    mov   eax, [esp-8]\r
    ret\r
  }\r
}\r
Commit	Line	Data
96dbfad9 XL	1	/** @file\r
	2	64-bit Math Worker Function.\r
	3	The 32-bit versions of C compiler generate calls to library routines\r
	4	to handle 64-bit math. These functions use non-standard calling conventions.\r
	5	\r
	6	Copyright (c) 2019, Intel Corporation. All rights reserved.<BR>\r
	7	SPDX-License-Identifier: BSD-2-Clause-Patent\r
	8	\r
	9	**/\r
	10	\r
	11	/*\r
	12	* Floating point to integer conversion.\r
	13	*/\r
7c342378 MK	14	__declspec(naked) void\r
	15	_ftol2 (\r
	16	void\r
	17	)\r
96dbfad9 XL	18	{\r
	19	_asm {\r
	20	fistp qword ptr [esp-8]\r
	21	mov edx, [esp-4]\r
	22	mov eax, [esp-8]\r
	23	ret\r
	24	}\r
	25	}\r