Apparatus and method for rounding a floating point value to an integral floating point value

摘要

Processing circuitry is provided to perform an operation FRINT for rounding a floating point value to an integral floating point value. Control circuitry controls the processing circuitry to perform the FRINT operation in response to an FRINT instruction. The processing circuitry includes shifting circuitry for generating a rounding value by shifting a base value adding circuitry for adding the rounding value to the significand of the floating point value to generate a sum value mask generating circuitry for generating a mask for clearing fractional valued bits of the sum value and masking circuitry for applying the mask to the sum value to generate the integral floating point value.