2007-03-14 20:30:32 +00:00
|
|
|
/*
|
|
|
|
* COPYRIGHT: See COPYING in the top level directory
|
|
|
|
* PROJECT: ReactOS kernel
|
|
|
|
* PURPOSE: Run-Time Library
|
2015-09-19 13:50:57 +00:00
|
|
|
* FILE: lib/sdk/crt/math/i386/ceil_asm.s
|
2007-03-14 20:30:32 +00:00
|
|
|
* PROGRAMER: Alex Ionescu (alex@relsoft.net)
|
|
|
|
*
|
|
|
|
* Copyright (C) 2002 Michael Ringgaard.
|
2021-09-13 01:33:14 +00:00
|
|
|
* All rights reserved.
|
2007-03-14 20:30:32 +00:00
|
|
|
*
|
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
|
* modification, are permitted provided that the following conditions
|
|
|
|
* are met:
|
2021-09-13 01:33:14 +00:00
|
|
|
*
|
|
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer.
|
2007-03-14 20:30:32 +00:00
|
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer in the
|
2021-09-13 01:33:14 +00:00
|
|
|
* documentation and/or other materials provided with the distribution.
|
2007-03-14 20:30:32 +00:00
|
|
|
* 3. Neither the name of the project nor the names of its contributors
|
|
|
|
* may be used to endorse or promote products derived from this software
|
2021-09-13 01:33:14 +00:00
|
|
|
* without specific prior written permission.
|
2007-03-14 20:30:32 +00:00
|
|
|
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
|
|
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
|
|
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
|
|
* OR SERVICES// LOSS OF USE, DATA, OR PROFITS// OR BUSINESS INTERRUPTION)
|
|
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
2021-09-13 01:33:14 +00:00
|
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
2007-03-14 20:30:32 +00:00
|
|
|
* SUCH DAMAGE.
|
|
|
|
*/
|
|
|
|
|
2010-11-27 22:12:15 +00:00
|
|
|
#include <asm.inc>
|
|
|
|
|
|
|
|
PUBLIC _ceil
|
2007-03-14 20:30:32 +00:00
|
|
|
|
|
|
|
/* FUNCTIONS ***************************************************************/
|
2010-11-27 22:12:15 +00:00
|
|
|
.code
|
2007-03-14 20:30:32 +00:00
|
|
|
|
|
|
|
_ceil:
|
|
|
|
push ebp
|
|
|
|
mov ebp,esp
|
|
|
|
sub esp,4 // Allocate temporary space
|
|
|
|
fld qword ptr [ebp+8] // Load real from stack
|
|
|
|
fstcw [ebp-2] // Save control word
|
|
|
|
fclex // Clear exceptions
|
2010-11-27 22:12:15 +00:00
|
|
|
mov word ptr [ebp-4], HEX(0b63) // Rounding control word
|
2007-03-14 20:30:32 +00:00
|
|
|
fldcw [ebp-4] // Set new rounding control
|
|
|
|
frndint // Round to integer
|
|
|
|
fclex // Clear exceptions
|
|
|
|
fldcw [ebp-2] // Restore control word
|
|
|
|
mov esp,ebp // Deallocate temporary space
|
|
|
|
pop ebp
|
|
|
|
ret
|
2010-11-27 22:12:15 +00:00
|
|
|
|
|
|
|
END
|