mirror of
https://github.com/ilyakooo0/urbit.git
synced 2024-12-24 23:44:56 +03:00
60 lines
2.7 KiB
C
60 lines
2.7 KiB
C
|
|
/*============================================================================
|
|
|
|
This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
|
|
Package, Release 3, by John R. Hauser.
|
|
|
|
Copyright 2011, 2012, 2013, 2014 The Regents of the University of California
|
|
(Regents). All Rights Reserved. Redistribution and use in source and binary
|
|
forms, with or without modification, are permitted provided that the following
|
|
conditions are met:
|
|
|
|
Redistributions of source code must retain the above copyright notice,
|
|
this list of conditions, and the following two paragraphs of disclaimer.
|
|
Redistributions in binary form must reproduce the above copyright notice,
|
|
this list of conditions, and the following two paragraphs of disclaimer in the
|
|
documentation and/or other materials provided with the distribution. Neither
|
|
the name of the Regents nor the names of its contributors may be used to
|
|
endorse or promote products derived from this software without specific prior
|
|
written permission.
|
|
|
|
IN NO EVENT SHALL REGENTS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT,
|
|
SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING
|
|
OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF REGENTS HAS
|
|
BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
REGENTS SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
PURPOSE. THE SOFTWARE AND ACCOMPANYING DOCUMENTATION, IF ANY, PROVIDED
|
|
HEREUNDER IS PROVIDED "AS IS". REGENTS HAS NO OBLIGATION TO PROVIDE
|
|
MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
|
|
|
|
=============================================================================*/
|
|
|
|
#include <stdint.h>
|
|
#include "platform.h"
|
|
#include "primitives.h"
|
|
#include "specialize.h"
|
|
#include "softfloat.h"
|
|
|
|
/*----------------------------------------------------------------------------
|
|
| Assuming the 128-bit floating-point value pointed to by `aWPtr' is a NaN,
|
|
| converts this NaN to the common NaN form, and stores the resulting common
|
|
| NaN at the location pointed to by `zPtr'. If the NaN is a signaling NaN,
|
|
| the invalid exception is raised. Argument `aWPtr' points to an array of
|
|
| four 32-bit elements that concatenate in the platform's normal endian order
|
|
| to form a 128-bit floating-point value.
|
|
*----------------------------------------------------------------------------*/
|
|
void
|
|
softfloat_f128MToCommonNaN( const uint32_t *aWPtr, struct commonNaN *zPtr )
|
|
{
|
|
|
|
if ( f128M_isSignalingNaN( (const float128_t *) aWPtr ) ) {
|
|
softfloat_raiseFlags( softfloat_flag_invalid );
|
|
}
|
|
zPtr->sign = aWPtr[indexWordHi( 4 )]>>31;
|
|
softfloat_shortShiftLeft128M( aWPtr, 16, (uint32_t *) &zPtr->v0 );
|
|
|
|
}
|
|
|