688fd61ae8
It is automatically set when -fPIC is passed to the compiler. Reviewed by: dim, kib Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D1179
65 lines
2.1 KiB
C
65 lines
2.1 KiB
C
/*-
|
|
* Copyright (c) 2004 David Schultz <das@FreeBSD.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 AUTHOR 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 AUTHOR 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include <math.h>
|
|
|
|
#include "fpmath.h"
|
|
|
|
/*
|
|
* XXX These routines belong in libm, but they must remain in libc for
|
|
* binary compat until we can bump libm's major version number.
|
|
*
|
|
* Note this only applies to the dynamic versions of libm and libc, so
|
|
* for the static and profiled versions we stub out the definitions.
|
|
* Otherwise you cannot link statically to libm and libc at the same
|
|
* time, when calling both functions.
|
|
*/
|
|
|
|
#ifdef __PIC__
|
|
__weak_reference(__isnan, isnan);
|
|
__weak_reference(__isnanf, isnanf);
|
|
|
|
int
|
|
__isnan(double d)
|
|
{
|
|
union IEEEd2bits u;
|
|
|
|
u.d = d;
|
|
return (u.bits.exp == 2047 && (u.bits.manl != 0 || u.bits.manh != 0));
|
|
}
|
|
|
|
int
|
|
__isnanf(float f)
|
|
{
|
|
union IEEEf2bits u;
|
|
|
|
u.f = f;
|
|
return (u.bits.exp == 255 && u.bits.man != 0);
|
|
}
|
|
#endif /* __PIC__ */
|