void f64_to_extF80M( float64_t a, extFloat80_t *zPtr )
{
struct extFloat80M *zSPtr;
union ui64_f64 uA;
uint64_t uiA;
bool sign;
int_fast16_t exp;
uint64_t frac;
struct commonNaN commonNaN;
uint_fast16_t uiZ64;
uint64_t uiZ0;
struct exp16_sig64 normExpSig;
/*------------------------------------------------------------------------
*------------------------------------------------------------------------*/
zSPtr = (struct extFloat80M *) zPtr;
uA.f = a;
uiA = uA.ui;
sign = signF64UI( uiA );
exp = expF64UI( uiA );
frac = fracF64UI( uiA );
/*------------------------------------------------------------------------
*------------------------------------------------------------------------*/
if ( exp == 0x7FF ) {
if ( frac ) {
softfloat_f64UIToCommonNaN( uiA, &commonNaN );
softfloat_commonNaNToExtF80M( &commonNaN, zSPtr );
return;
}
uiZ64 = packToExtF80UI64( sign, 0x7FFF );
uiZ0 = UINT64_C( 0x8000000000000000 );
goto uiZ;
}
/*------------------------------------------------------------------------
*------------------------------------------------------------------------*/
if ( ! exp ) {
if ( ! frac ) {
uiZ64 = packToExtF80UI64( sign, 0 );
uiZ0 = 0;
goto uiZ;
}
normExpSig = softfloat_normSubnormalF64Sig( frac );
exp = normExpSig.exp;
frac = normExpSig.sig;
}
/*------------------------------------------------------------------------
*------------------------------------------------------------------------*/
uiZ64 = packToExtF80UI64( sign, exp + 0x3C00 );
uiZ0 = UINT64_C( 0x8000000000000000 ) | frac<<11;
uiZ:
zSPtr->signExp = uiZ64;
zSPtr->signif = uiZ0;
}
void f128M_to_extF80M( const float128_t *aPtr, extFloat80_t *zPtr )
{
const uint32_t *aWPtr;
struct extFloat80M *zSPtr;
uint32_t uiA96;
bool sign;
int32_t exp;
struct commonNaN commonNaN;
uint32_t sig[4];
/*------------------------------------------------------------------------
*------------------------------------------------------------------------*/
aWPtr = (const uint32_t *) aPtr;
zSPtr = (struct extFloat80M *) zPtr;
/*------------------------------------------------------------------------
*------------------------------------------------------------------------*/
uiA96 = aWPtr[indexWordHi( 4 )];
sign = signF128UI96( uiA96 );
exp = expF128UI96( uiA96 );
/*------------------------------------------------------------------------
*------------------------------------------------------------------------*/
if ( exp == 0x7FFF ) {
if ( softfloat_isNaNF128M( aWPtr ) ) {
softfloat_f128MToCommonNaN( aWPtr, &commonNaN );
softfloat_commonNaNToExtF80M( &commonNaN, zSPtr );
return;
}
zSPtr->signExp = packToExtF80UI64( sign, 0x7FFF );
zSPtr->signif = UINT64_C( 0x8000000000000000 );
return;
}
/*------------------------------------------------------------------------
*------------------------------------------------------------------------*/
exp = softfloat_shiftNormSigF128M( aWPtr, 15, sig );
if ( exp == -128 ) {
zSPtr->signExp = packToExtF80UI64( sign, 0 );
zSPtr->signif = 0;
return;
}
if ( sig[indexWord( 4, 0 )] ) sig[indexWord( 4, 1 )] |= 1;
softfloat_roundPackMToExtF80M(
sign, exp, &sig[indexMultiwordHi( 4, 3 )], 80, zSPtr );
}