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// See LICENSE.SoftFloat for license details.
#include <stdbool.h>
#include <stdint.h>
#include "platform.h"
#include "primitives.h"
#include "internals.h"
#include "specialize.h"
float32_t
softfloat_addMagsF32( uint_fast32_t uiA, uint_fast32_t uiB, bool signZ )
{
int_fast16_t expA;
uint_fast32_t sigA;
int_fast16_t expB;
uint_fast32_t sigB;
int_fast16_t expDiff;
uint_fast32_t uiZ;
int_fast16_t expZ;
uint_fast32_t sigZ;
union ui32_f32 uZ;
expA = expF32UI( uiA );
sigA = fracF32UI( uiA );
expB = expF32UI( uiB );
sigB = fracF32UI( uiB );
expDiff = expA - expB;
sigA <<= 6;
sigB <<= 6;
if ( ! expDiff ) {
if ( expA == 0xFF ) {
if ( sigA | sigB ) goto propagateNaN;
uiZ = uiA;
goto uiZ;
}
if ( ! expA ) {
uiZ = packToF32UI( signZ, 0, ( uiA + uiB ) & 0x7FFFFFFF );
goto uiZ;
}
expZ = expA;
sigZ = 0x40000000 + sigA + sigB;
} else {
if ( expDiff < 0 ) {
if ( expB == 0xFF ) {
if ( sigB ) goto propagateNaN;
uiZ = packToF32UI( signZ, 0xFF, 0 );
goto uiZ;
}
expZ = expB;
sigA += expA ? 0x20000000 : sigA;
sigA = softfloat_shift32RightJam( sigA, - expDiff );
} else {
if ( expA == 0xFF ) {
if ( sigA ) goto propagateNaN;
uiZ = uiA;
goto uiZ;
}
expZ = expA;
sigB += expB ? 0x20000000 : sigB;
sigB = softfloat_shift32RightJam( sigB, expDiff );
}
sigZ = 0x20000000 + sigA + sigB;
if ( sigZ < 0x40000000 ) {
--expZ;
sigZ <<= 1;
}
}
return softfloat_roundPackToF32( signZ, expZ, sigZ );
propagateNaN:
uiZ = softfloat_propagateNaNF32UI( uiA, uiB );
uiZ:
uZ.ui = uiZ;
return uZ.f;
}
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