Remove type converts

include/ck/utility/data_type.hpp

@@ -973,151 +973,6 @@ using f8x16_t = typename vector_type<f8_t, 16>::type;
 using f8x32_t = typename vector_type<f8_t, 32>::type;
 using f8x64_t = typename vector_type<f8_t, 64>::type;
 
-// Convert X to Y
-template <typename Y, typename X>
-__host__ __device__ constexpr Y type_convert(X x)
-{
-    static_assert(!std::is_reference_v<Y> && !std::is_reference_v<X>);
-
-    return static_cast<Y>(x);
-}
-
-// convert bfp16 to fp32
-template <>
-inline __host__ __device__ constexpr float type_convert<float, bhalf_t>(bhalf_t x)
-{
-    union
-    {
-        uint32_t int32;
-        float fp32;
-    } u = {uint32_t(x) << 16};
-
-    return u.fp32;
-}
-
-// convert fp32 to bfp16
-template <>
-inline __host__ __device__ constexpr bhalf_t type_convert<bhalf_t, float>(float x)
-{
-    union
-    {
-        float fp32;
-        uint32_t int32;
-    } u = {x};
-
-    return uint16_t(u.int32 >> 16);
-}
-
-// convert bfp16 to fp16 via fp32
-template <>
-inline __host__ __device__ constexpr half_t type_convert<half_t, bhalf_t>(bhalf_t x)
-{
-    float x_fp32 = type_convert<float>(x);
-
-    return static_cast<half_t>(x_fp32);
-}
-
-// convert fp16 to bfp16 via fp32
-template <>
-inline __host__ __device__ constexpr bhalf_t type_convert<bhalf_t, half_t>(half_t x)
-{
-    float x_fp32 = static_cast<float>(x);
-
-    return type_convert<bhalf_t>(x_fp32);
-}
-
-// convert bfp16 to int32 via fp32
-template <>
-inline __host__ __device__ constexpr int32_t type_convert<int32_t, bhalf_t>(bhalf_t x)
-{
-    float x_fp32 = type_convert<float>(x);
-
-    return static_cast<int32_t>(x_fp32);
-}
-
-// convert int32 to bfp16 via fp32
-template <>
-inline __host__ __device__ constexpr bhalf_t type_convert<bhalf_t, int32_t>(int32_t x)
-{
-    float x_fp32 = static_cast<float>(x);
-
-    return type_convert<bhalf_t>(x_fp32);
-}
-
-// convert bfp16 to int8 via fp32
-template <>
-inline __host__ __device__ constexpr int8_t type_convert<int8_t, bhalf_t>(bhalf_t x)
-{
-    float x_fp32 = type_convert<float>(x);
-
-    return static_cast<int8_t>(x_fp32);
-}
-
-// convert int8 to bfp16 via fp32
-template <>
-inline __host__ __device__ constexpr bhalf_t type_convert<bhalf_t, int8_t>(int8_t x)
-{
-    float x_fp32 = static_cast<float>(x);
-
-    return type_convert<bhalf_t>(x_fp32);
-}
-
-// Declare a template function for bf16 conversion using RTN
-template <typename Y, typename X>
-__host__ __device__ constexpr Y bf16_convert_rtn(X x);
-
-// Convert fp32 to bf16 with RTN if higher precision is needed
-template <>
-inline __host__ __device__ constexpr bhalf_t bf16_convert_rtn<bhalf_t, float>(float x)
-{
-    union
-    {
-        float fp32;
-        uint32_t int32;
-    } u = {x};
-
-    // When the exponent bits are not all 1s, then the value is zero, normal,
-    // or subnormal. We round the bfloat16 mantissa up by adding 0x7FFF, plus
-    // 1 if the least significant bit of the bfloat16 mantissa is 1 (odd).
-    // This causes the bfloat16's mantissa to be incremented by 1 if the 16
-    // least significant bits of the float mantissa are greater than 0x8000,
-    // or if they are equal to 0x8000 and the least significant bit of the
-    // bfloat16 mantissa is 1 (odd). This causes it to be rounded to even when
-    // the lower 16 bits are exactly 0x8000. If the bfloat16 mantissa already
-    // has the value 0x7f, then incrementing it causes it to become 0x00 and
-    // the exponent is incremented by one, which is the next higher FP value
-    // to the unrounded bfloat16 value. When the bfloat16 value is subnormal
-    // with an exponent of 0x00 and a mantissa of 0x7f, it may be rounded up
-    // to a normal value with an exponent of 0x01 and a mantissa of 0x00.
-    // When the bfloat16 value has an exponent of 0xFE and a mantissa of 0x7F,
-    // incrementing it causes it to become an exponent of 0xFF and a mantissa
-    // of 0x00, which is Inf, the next higher value to the unrounded value.
-    bool flag0 = ~u.int32 & 0x7f800000;
-
-    // When all of the exponent bits are 1, the value is Inf or NaN.
-    // Inf is indicated by a zero mantissa. NaN is indicated by any nonzero
-    // mantissa bit. Quiet NaN is indicated by the most significant mantissa
-    // bit being 1. Signaling NaN is indicated by the most significant
-    // mantissa bit being 0 but some other bit(s) being 1. If any of the
-    // lower 16 bits of the mantissa are 1, we set the least significant bit
-    // of the bfloat16 mantissa, in order to preserve signaling NaN in case
-    // the bfloat16's mantissa bits are all 0.
-    bool flag1 = !flag0 && (u.int32 & 0xffff);
-
-    u.int32 += flag0 ? 0x7fff + ((u.int32 >> 16) & 1) : 0; // Round to nearest, round to even
-    u.int32 |= flag1 ? 0x10000 : 0x0;                      // Preserve signaling NaN
-
-    return uint16_t(u.int32 >> 16);
-}
-
-// convert fp16 to bfp16 via fp32 with RTN if higher precision is needed
-template <>
-inline __host__ __device__ constexpr bhalf_t bf16_convert_rtn<bhalf_t, half_t>(half_t x)
-{
-    float x_fp32 = static_cast<float>(x);
-
-    return bf16_convert_rtn<bhalf_t>(x_fp32);
-}
 template <typename T>
 struct NumericLimits;