68 lines
2.2 KiB
C
68 lines
2.2 KiB
C
|
/*
|
||
|
|
(c) Copyright 2019 Joel Sherrill <joel@rtems.org
|
||
|
|
All rights reserved.
|
||
|
|
|
||
|
|
Redistribution and use in source and binary forms, with or without
|
||
|
|
modification, are permitted provided that the following conditions
|
||
|
|
are met:
|
||
|
|
|
||
|
|
1. Redistributions of source code must retain the above copyright
|
||
|
|
notice, this list of conditions and the following disclaimer.
|
||
|
|
|
||
|
|
2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
notice, this list of conditions and the following disclaimer in the
|
||
|
|
documentation and/or other materials provided with the distribution.
|
||
|
|
|
||
|
|
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
|
||
|
|
HOLDER 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 OUT OF THE USE
|
||
|
|
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <fenv.h>
|
||
|
|
#include <errno.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
FUNCTION
|
||
|
|
<<fesetround>>---set current rounding direction
|
||
|
|
|
||
|
|
INDEX
|
||
|
|
fesetround
|
||
|
|
SYNOPSIS
|
||
|
|
#include <fenv.h>
|
||
|
|
int fesetround(int <[round]>);
|
||
|
|
|
||
|
|
Link with -lm.
|
||
|
|
|
||
|
|
DESCRIPTION
|
||
|
|
This method attempts to set the current rounding direction represented
|
||
|
|
by <[round]>. <[round]> must be the value of one of the
|
||
|
|
rounding-direction macros.
|
||
|
|
|
||
|
|
RETURNS
|
||
|
|
If the rounding mode was successfully established, this method returns
|
||
|
|
zero. Otherwise, a non-zero value is returned.
|
||
|
|
|
||
|
|
PORTABILITY
|
||
|
|
ANSI C requires <<fesetround>>.
|
||
|
|
|
||
|
|
Not all Newlib targets have a working implementation. Refer to
|
||
|
|
the file <<sys/fenv.h>> to see the status for your target.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*
|
||
|
|
* This is a non-functional implementation that should be overridden
|
||
|
|
* by an architecture specific implementation in newlib/libm/machine/ARCH.
|
||
|
|
*/
|
||
|
|
int fesetround(int round)
|
||
|
|
{
|
||
|
|
return -ENOTSUP;
|
||
|
|
}
|