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Examples
logb.c
Go to the documentation of this file.
1
/* Math functions for i387.
2
Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
3
This file is part of the GNU C Library.
4
Contributed by John C. Bowman <bowman@ipp-garching.mpg.de>, 1995.
5
6
The GNU C Library is free software; you can redistribute it and/or
7
modify it under the terms of the GNU Lesser General Public
8
License as published by the Free Software Foundation; either
9
version 2.1 of the License, or (at your option) any later version.
10
11
The GNU C Library is distributed in the hope that it will be useful,
12
but WITHOUT ANY WARRANTY; without even the implied warranty of
13
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14
Lesser General Public License for more details.
15
16
You should have received a copy of the GNU Lesser General Public
17
License along with the GNU C Library; if not, write to the Free
18
Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19
Boston, MA 02110-1301, USA.
20
*/
21
22
#include <precomp.h>
23
24
double
_logb
(
double
__x)
25
{
26
register
double
__val
;
27
#ifdef __GNUC__
28
register
double
__junk;
29
__asm __volatile__
30
(
"fxtract\n\t"
31
:
"=t"
(__junk),
"=u"
(
__val
) :
"0"
(__x));
32
#else
33
#pragma message ("REVIEW ME"
)
34
__asm fld [__x];
35
__asm fxtract;
36
__asm fstp st(0);
37
__asm fstp [
__val
];
38
#endif
/*__GNUC__*/
39
return
__val
;
40
}
__val
_STLP_INLINE_LOOP _InputIter const _Tp & __val
Definition:
_algobase.h:656
_logb
double _logb(double __x)
Definition:
logb.c:24
sdk
lib
crt
float
i386
logb.c
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