s_propagateNaNExtF80M.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
void	softfloat_propagateNaNExtF80M (const struct extFloat80M *aSPtr, const struct extFloat80M *bSPtr, struct extFloat80M *zSPtr)

Function Documentation

softfloat_propagateNaNExtF80M()

void softfloat_propagateNaNExtF80M	(	const struct extFloat80M *	aSPtr,
		const struct extFloat80M *	bSPtr,
		struct extFloat80M *	zSPtr )

Definition at line 51 of file s_propagateNaNExtF80M.c.

{
    bool isSigNaNA;
    const struct extFloat80M *sPtr;
    bool isSigNaNB;
    uint_fast16_t uiB64;
    uint64_t uiB0;
    uint_fast16_t uiA64;
    uint64_t uiA0;
    uint_fast16_t uiMagA64, uiMagB64;
 
    isSigNaNA = extF80M_isSignalingNaN( (const extFloat80_t *) aSPtr );
    sPtr = aSPtr;
    if ( ! bSPtr ) {
        if ( isSigNaNA ) softfloat_raiseFlags( softfloat_flag_invalid );
        goto copy;
    }
    isSigNaNB = extF80M_isSignalingNaN( (const extFloat80_t *) bSPtr );
    if ( isSigNaNA | isSigNaNB ) {
        softfloat_raiseFlags( softfloat_flag_invalid );
        if ( isSigNaNA ) {
            uiB64 = bSPtr->signExp;
            if ( isSigNaNB ) goto returnLargerUIMag;
            uiB0 = bSPtr->signif;
            if ( isNaNExtF80UI( uiB64, uiB0 ) ) goto copyB;
            goto copy;
        } else {
            uiA64 = aSPtr->signExp;
            uiA0 = aSPtr->signif;
            if ( isNaNExtF80UI( uiA64, uiA0 ) ) goto copy;
            goto copyB;
        }
    }
    uiB64 = bSPtr->signExp;
 returnLargerUIMag:
    uiA64 = aSPtr->signExp;
    uiMagA64 = uiA64 & 0x7FFF;
    uiMagB64 = uiB64 & 0x7FFF;
    if ( uiMagA64 < uiMagB64 ) goto copyB;
    if ( uiMagB64 < uiMagA64 ) goto copy;
    uiA0 = aSPtr->signif;
    uiB0 = bSPtr->signif;
    if ( uiA0 < uiB0 ) goto copyB;
    if ( uiB0 < uiA0 ) goto copy;
    if ( uiA64 < uiB64 ) goto copy;
 copyB:
    sPtr = bSPtr;
 copy:
    zSPtr->signExp = sPtr->signExp;
    zSPtr->signif = sPtr->signif | UINT64_C( 0xC000000000000000 );
 
}

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