Function float_to_bf16

support/Bfloat16.h:60–76

Convert float to bfloat16 * * @param[in] v Floating-point value to convert to bfloat * * @return Converted value */

 * @return Converted value
 */
inline uint16_t float_to_bf16(const float v)
{
#if defined(ARM_COMPUTE_ENABLE_BF16)
    const uint32_t *fromptr = reinterpret_cast<const uint32_t *>(&v);
    uint16_t        res;

    __asm __volatile("ldr    s0, [%[fromptr]]\n"
                     ".inst    0x1e634000\n" // BFCVT h0, s0
                     "str    h0, [%[toptr]]\n"
                     :
                     : [fromptr] "r"(fromptr), [toptr] "r"(&res)
                     : "v0", "memory");
    return res;
#else  /* defined(ARM_COMPUTE_ENABLE_BF16) */
    return portable_float_to_bf16(v);
#endif /* defined(ARM_COMPUTE_ENABLE_BF16) */
}

/** Truncate a float to bf16 precision.
 *