kolibrios-gitea/contrib/sdk/sources/newlib/math/f_frexpf.S
Sergey Semyonov (Serge) 754f9336f0 upload sdk
git-svn-id: svn://kolibrios.org@4349 a494cfbc-eb01-0410-851d-a64ba20cac60
2013-12-15 08:09:20 +00:00

49 lines
847 B
ArmAsm

/*
* ====================================================
* Copyright (C) 1998, 2002 by Red Hat Inc. All rights reserved.
*
* Permission to use, copy, modify, and distribute this
* software is freely granted, provided that this notice
* is preserved.
* ====================================================
*/
#if !defined(_SOFT_FLOAT)
/*
Fast version of frexpf using Intel float instructions.
float _f_frexpf (float x, int *exp);
Function splits x into y * 2 ** z. It then
returns the value of y and updates *exp with z.
There is no error checking or setting of errno.
*/
#include "i386mach.h"
.global SYM (_f_frexpf)
SOTYPE_FUNCTION(_f_frexpf)
SYM (_f_frexpf):
pushl ebp
movl esp,ebp
flds 8(ebp)
movl 12(ebp),eax
fxtract
fld1
fchs
fxch
fscale
fstp st1
fxch
fld1
faddp
fistpl 0(eax)
leave
ret
#endif