softfloat/f32_eq.c


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#include <stdbool.h>
#include <stdint.h>
#include "platform.h"
#include "internals.h"
#include "specialize.h"
#include "softfloat.h"

bool f32_eq( float32_t a, float32_t b )
{
    union ui32_f32 uA;
    uint_fast32_t uiA;
    union ui32_f32 uB;
    uint_fast32_t uiB;

    uA.f = a;
    uiA = uA.ui;
    uB.f = b;
    uiB = uB.ui;
    if (
           ( ( expF32UI( uiA ) == 0xFF ) && fracF32UI( uiA ) )
        || ( ( expF32UI( uiB ) == 0xFF ) && fracF32UI( uiB ) )
    ) {
        if (
            softfloat_isSigNaNF32UI( uiA ) || softfloat_isSigNaNF32UI( uiB )
        ) {
            softfloat_raiseFlags( softfloat_flag_invalid );
        }
        return false;
    }
    return ( uiA == uiB ) || ! (uint32_t) ( ( uiA | uiB )<<1 );

}