s_propagateNaNF128UI.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
struct uint128	softfloat_propagateNaNF128UI (uint_fast64_t uiA64, uint_fast64_t uiA0, uint_fast64_t uiB64, uint_fast64_t uiB0)

Function Documentation

softfloat_propagateNaNF128UI()

struct uint128 softfloat_propagateNaNF128UI	(	uint_fast64_t	uiA64,
		uint_fast64_t	uiA0,
		uint_fast64_t	uiB64,
		uint_fast64_t	uiB0 )

Definition at line 54 of file s_propagateNaNF128UI.c.

{
    bool isSigNaNA, isSigNaNB;
    uint_fast64_t uiNonsigA64, uiNonsigB64, uiMagA64, uiMagB64;
    struct uint128 uiZ;
 
    /*------------------------------------------------------------------------
    *------------------------------------------------------------------------*/
    isSigNaNA = softfloat_isSigNaNF128UI( uiA64, uiA0 );
    isSigNaNB = softfloat_isSigNaNF128UI( uiB64, uiB0 );
    /*------------------------------------------------------------------------
    | Make NaNs non-signaling.
    *------------------------------------------------------------------------*/
    uiNonsigA64 = uiA64 | UINT64_C( 0x0000800000000000 );
    uiNonsigB64 = uiB64 | UINT64_C( 0x0000800000000000 );
    /*------------------------------------------------------------------------
    *------------------------------------------------------------------------*/
    if ( isSigNaNA | isSigNaNB ) {
        softfloat_raiseFlags( softfloat_flag_invalid );
        if ( isSigNaNA ) {
            if ( isSigNaNB ) goto returnLargerMag;
            if ( isNaNF128UI( uiB64, uiB0 ) ) goto returnB;
            goto returnA;
        } else {
            if ( isNaNF128UI( uiA64, uiA0 ) ) goto returnA;
            goto returnB;
        }
    }
 returnLargerMag:
    uiMagA64 = uiA64 & UINT64_C( 0x7FFFFFFFFFFFFFFF );
    uiMagB64 = uiB64 & UINT64_C( 0x7FFFFFFFFFFFFFFF );
    if ( uiMagA64 < uiMagB64 ) goto returnB;
    if ( uiMagB64 < uiMagA64 ) goto returnA;
    if ( uiA0 < uiB0 ) goto returnB;
    if ( uiB0 < uiA0 ) goto returnA;
    if ( uiNonsigA64 < uiNonsigB64 ) goto returnA;
 returnB:
    uiZ.v64 = uiNonsigB64;
    uiZ.v0  = uiB0;
    return uiZ;
 returnA:
    uiZ.v64 = uiNonsigA64;
    uiZ.v0  = uiA0;
    return uiZ;
 
}

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