Spike, a RISC-V ISA Simulator
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#include <stdbool.h>
#include "platform.h"
#include "internals.h"
#include "specialize.h"
#include "softfloat.h"
bool f64_isSignalingNaN( float64_t a )
{
union ui64_f64 uA;
uA.f = a;
return softfloat_isSigNaNF64UI( uA.ui );
}