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Create a branch for Aleksandar Andrejevic for his work on NTVDM. See http://jira.reactos.org/browse/CORE-7250 for more details.

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svn path=/branches/ntvdm/; revision=59241
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Hermès Bélusca-Maïto 2013-06-16 22:01:41 +00:00
parent 3e3200acef
commit 4f0b8d3db0
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lib/sdk/crt/math/i386/floorf.S Normal file
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/*
* Written by J.T. Conklin <jtc@netbsd.org>.
* Public domain.
*
* Changes for long double by Ulrich Drepper <drepper@cygnus.com>
*
* Removed header file dependency for use in libmingwex.a by
* Danny Smith <dannysmith@users.sourceforge.net>
*/
#include <asm.inc>
.code
.align 4
PUBLIC _floorf
_floorf:
fld dword ptr [esp + 4]
sub esp, 8
fstcw [esp + 4] /* store fpu control word */
/* We use here %edx although only the low 1 bits are defined.
But none of the operations should care and they are faster
than the 16 bit operations. */
mov edx, [esp + 4]
or edx, HEX(0400) /* round towards -oo */
and edx, HEX(0f7ff)
mov [esp], edx
fldcw [esp] /* load modified control word */
frndint /* round */
fldcw [esp + 4] /* restore original control word */
add esp, 8
ret
END