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#pragma once
#include "WAVM/Inline/BasicTypes.h"
namespace WAVM {
template<typename Float> struct FloatComponents;
// The components of a 64-bit float
template<> struct FloatComponents<F64>
{
typedef U64 Bits;
typedef F64 Float;
static constexpr I64 maxSignificand = 0xfffffffffffff;
static constexpr Uptr numSignificandBits = 52;
static constexpr Uptr numSignificandHexits = 13;
static constexpr I64 canonicalSignificand = 0x8000000000000ull;
static constexpr I64 denormalExponent = -1023;
static constexpr I64 minNormalExponent = -1022;
static constexpr I64 maxNormalExponent = 1023;
static constexpr I64 exponentBias = 1023;
static constexpr I64 maxExponentBits = 0x7ff;
union
{
struct
{
U64 significand : 52;
U64 exponent : 11;
U64 sign : 1;
} bits;
Float value;
Bits bitcastInt;
};
};
// The components of a 32-bit float.
template<> struct FloatComponents<F32>
{
typedef U32 Bits;
typedef F32 Float;
static constexpr I32 maxSignificand = 0x7fffff;
static constexpr Uptr numSignificandBits = 23;
static constexpr Uptr numSignificandHexits = 6;
static constexpr I32 canonicalSignificand = 0x400000;
static constexpr I32 denormalExponent = -127;
static constexpr I32 minNormalExponent = -126;
static constexpr I32 maxNormalExponent = 127;
static constexpr I32 exponentBias = 127;
static constexpr I32 maxExponentBits = 0xff;
union
{
struct
{
U32 significand : 23;
U32 exponent : 8;
U32 sign : 1;
} bits;
Float value;
Bits bitcastInt;
};
};
}
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