Function float_to_float16

Source/astcenc_vecmathlib_neon_4.h:898–907

* @brief Return a float16 value for a float vector, using round-to-nearest. */

 * @brief Return a float16 value for a float vector, using round-to-nearest.
 */
ASTCENC_SIMD_INLINE vint4 float_to_float16(vfloat4 a)
{
	// Generate float16 value
	float16x4_t f16 = vcvt_f16_f32(a.m);

	// Convert each 16-bit float pattern to a 32-bit pattern
	uint16x4_t u16 = vreinterpret_u16_f16(f16);
	uint32x4_t u32 = vmovl_u16(u16);
	return vint4(vreinterpretq_s32_u32(u32));
}

/**
 * @brief Return a float16 value for a float scalar, using round-to-nearest.