source/RISCV/s_propagateNaNF128M.c

/*============================================================================

This C source file is part of the SoftFloat IEEE Floating-Point Arithmetic
Package, Release 3e, by John R. Hauser.

Copyright 2011, 2012, 2013, 2014, 2015, 2018 The Regents of the University of
California.  All rights reserved.

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 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,
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    be used to endorse or promote products derived from this software without
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THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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=============================================================================*/

#include <stdint.h>
#include "platform.h"
#include "primitiveTypes.h"
#include "specialize.h"
#include "softfloat.h"

/*----------------------------------------------------------------------------
| Assuming at least one of the two 128-bit floating-point values pointed to by
| 'aWPtr' and 'bWPtr' is a NaN, stores the combined NaN result at the location
| pointed to by 'zWPtr'.  If either original floating-point value is a
| signaling NaN, the invalid exception is raised.  Each of 'aWPtr', 'bWPtr',
| and 'zWPtr' 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_propagateNaNF128M(
     const uint32_t *aWPtr, const uint32_t *bWPtr, uint32_t *zWPtr )
{

    if (
        f128M_isSignalingNaN( (const float128_t *) aWPtr )
            || (bWPtr && f128M_isSignalingNaN( (const float128_t *) bWPtr ))
    ) {
        softfloat_raiseFlags( softfloat_flag_invalid );
    }
    zWPtr[indexWord( 4, 3 )] = defaultNaNF128UI96;
    zWPtr[indexWord( 4, 2 )] = defaultNaNF128UI64;
    zWPtr[indexWord( 4, 1 )] = defaultNaNF128UI32;
    zWPtr[indexWord( 4, 0 )] = defaultNaNF128UI0;

}