s_propagateNaNF128M.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_propagateNaNF128M (const uint32_t *aWPtr, const uint32_t *bWPtr, uint32_t *zWPtr)

Function Documentation

softfloat_propagateNaNF128M()

void softfloat_propagateNaNF128M	(	const uint32_t *	aWPtr,
		const uint32_t *	bWPtr,
		uint32_t *	zWPtr )

Definition at line 53 of file s_propagateNaNF128M.c.

{
    bool isSigNaNA;
    const uint32_t *ptr;
    bool isSigNaNB;
    uint32_t uiA96, uiB96, wordMagA, wordMagB;
 
    isSigNaNA = f128M_isSignalingNaN( (const float128_t *) aWPtr );
    ptr = aWPtr;
    if ( ! bWPtr ) {
        if ( isSigNaNA ) softfloat_raiseFlags( softfloat_flag_invalid );
        goto copy;
    }
    isSigNaNB = f128M_isSignalingNaN( (const float128_t *) bWPtr );
    if ( isSigNaNA | isSigNaNB ) {
        softfloat_raiseFlags( softfloat_flag_invalid );
        if ( isSigNaNA ) {
            if ( isSigNaNB ) goto returnLargerUIMag;
            if ( softfloat_isNaNF128M( bWPtr ) ) goto copyB;
            goto copy;
        } else {
            if ( softfloat_isNaNF128M( aWPtr ) ) goto copy;
            goto copyB;
        }
    }
 returnLargerUIMag:
    uiA96 = aWPtr[indexWordHi( 4 )];
    uiB96 = bWPtr[indexWordHi( 4 )];
    wordMagA = uiA96 & 0x7FFFFFFF;
    wordMagB = uiB96 & 0x7FFFFFFF;
    if ( wordMagA < wordMagB ) goto copyB;
    if ( wordMagB < wordMagA ) goto copy;
    wordMagA = aWPtr[indexWord( 4, 2 )];
    wordMagB = bWPtr[indexWord( 4, 2 )];
    if ( wordMagA < wordMagB ) goto copyB;
    if ( wordMagB < wordMagA ) goto copy;
    wordMagA = aWPtr[indexWord( 4, 1 )];
    wordMagB = bWPtr[indexWord( 4, 1 )];
    if ( wordMagA < wordMagB ) goto copyB;
    if ( wordMagB < wordMagA ) goto copy;
    wordMagA = aWPtr[indexWord( 4, 0 )];
    wordMagB = bWPtr[indexWord( 4, 0 )];
    if ( wordMagA < wordMagB ) goto copyB;
    if ( wordMagB < wordMagA ) goto copy;
    if ( uiA96 < uiB96 ) goto copy;
 copyB:
    ptr = bWPtr;
 copy:
    zWPtr[indexWordHi( 4 )] = ptr[indexWordHi( 4 )] | 0x00008000;
    zWPtr[indexWord( 4, 2 )] = ptr[indexWord( 4, 2 )];
    zWPtr[indexWord( 4, 1 )] = ptr[indexWord( 4, 1 )];
    zWPtr[indexWord( 4, 0 )] = ptr[indexWord( 4, 0 )];
 
}

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