f128M_eq_signaling.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
bool	f128M_eq_signaling (const float128_t *aPtr, const float128_t *bPtr)

Function Documentation

f128M_eq_signaling()

bool f128M_eq_signaling	(	const float128_t *	aPtr,
		const float128_t *	bPtr )

Definition at line 55 of file f128M_eq_signaling.c.

{
    const uint32_t *aWPtr, *bWPtr;
    uint32_t wordA, wordB, uiA96, uiB96;
    bool possibleOppositeZeros;
    uint32_t mashWord;
 
    aWPtr = (const uint32_t *) aPtr;
    bWPtr = (const uint32_t *) bPtr;
    if ( softfloat_isNaNF128M( aWPtr ) || softfloat_isNaNF128M( bWPtr ) ) {
        softfloat_raiseFlags( softfloat_flag_invalid );
        return false;
    }
    wordA = aWPtr[indexWord( 4, 2 )];
    wordB = bWPtr[indexWord( 4, 2 )];
    if ( wordA != wordB ) return false;
    uiA96 = aWPtr[indexWordHi( 4 )];
    uiB96 = bWPtr[indexWordHi( 4 )];
    possibleOppositeZeros = false;
    if ( uiA96 != uiB96 ) {
        possibleOppositeZeros = (((uiA96 | uiB96) & 0x7FFFFFFF) == 0);
        if ( ! possibleOppositeZeros ) return false;
    }
    mashWord = wordA | wordB;
    wordA = aWPtr[indexWord( 4, 1 )];
    wordB = bWPtr[indexWord( 4, 1 )];
    if ( wordA != wordB ) return false;
    mashWord |= wordA | wordB;
    wordA = aWPtr[indexWord( 4, 0 )];
    wordB = bWPtr[indexWord( 4, 0 )];
    return
        (wordA == wordB)
            && (! possibleOppositeZeros || ((mashWord | wordA | wordB) == 0));
 
}

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