extF80M_lt.c File Reference

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

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Functions
bool	extF80M_lt (const extFloat80_t *aPtr, const extFloat80_t *bPtr)

Function Documentation

extF80M_lt()

bool extF80M_lt	(	const extFloat80_t *	aPtr,
		const extFloat80_t *	bPtr )

Definition at line 54 of file extF80M_lt.c.

{
    const struct extFloat80M *aSPtr, *bSPtr;
    uint_fast16_t uiA64;
    uint64_t uiA0;
    uint_fast16_t uiB64;
    uint64_t uiB0;
    bool signA, ltMags;
 
    /*------------------------------------------------------------------------
    *------------------------------------------------------------------------*/
    aSPtr = (const struct extFloat80M *) aPtr;
    bSPtr = (const struct extFloat80M *) bPtr;
    /*------------------------------------------------------------------------
    *------------------------------------------------------------------------*/
    uiA64 = aSPtr->signExp;
    uiA0  = aSPtr->signif;
    uiB64 = bSPtr->signExp;
    uiB0  = bSPtr->signif;
    /*------------------------------------------------------------------------
    *------------------------------------------------------------------------*/
    if ( isNaNExtF80UI( uiA64, uiA0 ) || isNaNExtF80UI( uiB64, uiB0 ) ) {
        softfloat_raiseFlags( softfloat_flag_invalid );
        return false;
    }
    /*------------------------------------------------------------------------
    *------------------------------------------------------------------------*/
    signA = signExtF80UI64( uiA64 );
    if ( (uiA64 ^ uiB64) & 0x8000 ) {
        /*--------------------------------------------------------------------
        | Signs are different.
        *--------------------------------------------------------------------*/
        return signA && ((uiA0 | uiB0) != 0);
    } else {
        /*--------------------------------------------------------------------
        | Signs are the same.
        *--------------------------------------------------------------------*/
        if ( ! ((uiA0 & uiB0) & UINT64_C( 0x8000000000000000 )) ) {
            return (softfloat_compareNonnormExtF80M( aSPtr, bSPtr ) < 0);
        }
        if ( uiA64 == uiB64 ) {
            if ( uiA0 == uiB0 ) return false;
            ltMags = (uiA0 < uiB0);
        } else {
            ltMags = (uiA64 < uiB64);
        }
        return signA ^ ltMags;
    }
 
}

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