source/8086-SSE/s_commonNaNToF128M.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 The Regents of the University of California.
All rights reserved.

Redistribution and use in source and binary forms, with or without
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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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 3. Neither the name of the University nor the names of its contributors may
    be used to endorse or promote products derived from this software without
    specific prior written permission.

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
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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 "primitives.h"
#include "specialize.h"

/*----------------------------------------------------------------------------
| Converts the common NaN pointed to by `aPtr' into a 128-bit floating-point
| NaN, and stores this NaN at the location pointed to by `zWPtr'.  Argument
| `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_commonNaNToF128M( const struct commonNaN *aPtr, uint32_t *zWPtr )
{

    softfloat_shortShiftRight128M( (const uint32_t *) &aPtr->v0, 16, zWPtr );
    zWPtr[indexWordHi( 4 )] |= (uint32_t) aPtr->sign<<31 | 0x7FFF8000;

}