source/RISCV/s_propagateNaNF16UI.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, 2016 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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 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
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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 "specialize.h"
#include "softfloat.h"

/*----------------------------------------------------------------------------
| Interpreting `uiA' and `uiB' as the bit patterns of two 16-bit floating-
| point values, at least one of which is a NaN, returns the bit pattern of
| the combined NaN result.  If either `uiA' or `uiB' has the pattern of a
| signaling NaN, the invalid exception is raised.
*----------------------------------------------------------------------------*/
uint_fast16_t
 softfloat_propagateNaNF16UI( uint_fast16_t uiA, uint_fast16_t uiB )
{

    if ( softfloat_isSigNaNF16UI( uiA ) || softfloat_isSigNaNF16UI( uiB ) ) {
        softfloat_raiseFlags( softfloat_flag_invalid );
    }
    return defaultNaNF16UI;

}