METHOD AND APPARATUS FOR PERFORMING FLOATING-POINT DIVISION

摘要

A method and apparatus provides for performing floating-point division using input check/output correction floating-point division logic and a floating-point division fix-up instruction (e.g., an instruction, command, signal or other indicator). In one example, the apparatus includes a processor having a floating-point arithmetic logic unit (ALU) that includes the input check/output correction floating-point division logic. The input check/output correction floating-point division logic is responsive to the floating-point division fix-up instruction executable by the floating-point ALU that causes the input check/output correction floating-point division logic to examine a first input representing a numerator and a second input representing a denominator to determine whether a special case of floating-point division occurs. The floating-point division fix-up instruction also causes the input check/output correction floating-point division logic to provide an output representing a floating-point division result based on the determined special case of floating-point division and a third input representing a candidate quotient.