s_propagateNaNF64UI.c File Reference

#include <stdbool.h>
#include <stdint.h>
#include "platform.h"
#include "internals.h"
#include "specialize.h"
#include "softfloat.h"

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Functions
uint_fast64_t	softfloat_propagateNaNF64UI (uint_fast64_t uiA, uint_fast64_t uiB)

Function Documentation

softfloat_propagateNaNF64UI()

uint_fast64_t softfloat_propagateNaNF64UI	(	uint_fast64_t	uiA,
		uint_fast64_t	uiB )

Definition at line 51 of file s_propagateNaNF64UI.c.

{
    bool isSigNaNA, isSigNaNB;
    uint_fast64_t uiNonsigA, uiNonsigB, uiMagA, uiMagB;
 
    /*------------------------------------------------------------------------
    *------------------------------------------------------------------------*/
    isSigNaNA = softfloat_isSigNaNF64UI( uiA );
    isSigNaNB = softfloat_isSigNaNF64UI( uiB );
    /*------------------------------------------------------------------------
    | Make NaNs non-signaling.
    *------------------------------------------------------------------------*/
    uiNonsigA = uiA | UINT64_C( 0x0008000000000000 );
    uiNonsigB = uiB | UINT64_C( 0x0008000000000000 );
    /*------------------------------------------------------------------------
    *------------------------------------------------------------------------*/
    if ( isSigNaNA | isSigNaNB ) {
        softfloat_raiseFlags( softfloat_flag_invalid );
        if ( isSigNaNA ) {
            if ( isSigNaNB ) goto returnLargerMag;
            return isNaNF64UI( uiB ) ? uiNonsigB : uiNonsigA;
        } else {
            return isNaNF64UI( uiA ) ? uiNonsigA : uiNonsigB;
        }
    }
 returnLargerMag:
    uiMagA = uiA & UINT64_C( 0x7FFFFFFFFFFFFFFF );
    uiMagB = uiB & UINT64_C( 0x7FFFFFFFFFFFFFFF );
    if ( uiMagA < uiMagB ) return uiNonsigB;
    if ( uiMagB < uiMagA ) return uiNonsigA;
    return (uiNonsigA < uiNonsigB) ? uiNonsigA : uiNonsigB;
 
}

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