Function float16_to_float

Source/astcenc_vecmathlib_sse_4.h:998–1011

* @brief Return a float value for a float16 vector. */

 * @brief Return a float value for a float16 vector.
 */
ASTCENC_SIMD_INLINE vfloat4 float16_to_float(vint4 a)
{
#if ASTCENC_F16C >= 1
	__m128i packed = _mm_packs_epi32(a.m, a.m);
	__m128 f32 = _mm_cvtph_ps(packed);
	return vfloat4(f32);
#else
	return vfloat4(
		sf16_to_float(static_cast<uint16_t>(a.lane<0>())),
		sf16_to_float(static_cast<uint16_t>(a.lane<1>())),
		sf16_to_float(static_cast<uint16_t>(a.lane<2>())),
		sf16_to_float(static_cast<uint16_t>(a.lane<3>())));
#endif
}

/**
 * @brief Return a float value for a float16 scalar.