Patent ID: 11650819

Abstract:
Systems, methods, and apparatuses relating to instructions to multiply floating-point values of about one are described. In one embodiment, a hardware processor includes a decoder to decode a single instruction into a decoded single instruction, the single instruction having a first field that identifies a first floating-point number, a second field that identifies a second floating-point number, and a third field that indicates an about one threshold; and an execution circuit to execute the decoded single instruction to: cause a first comparison of an exponent of the first floating-point number to the about one threshold, cause a second comparison of an exponent of the second floating-point number to the about one threshold, provide as a resultant of the single instruction a value of the first floating-point number one when both the first comparison indicates the exponent of the first floating-point number does not exceed the about one threshold and the second comparison indicates the exponent of the second floating-point number does not exceed the about one threshold, provide as the resultant of the single instruction the second floating-point number when the first comparison indicates the exponent of the first floating-point number does not exceed the about one threshold, and provide as the resultant of the single instruction a product of a multiplication of the first floating-point number and the second floating-point number when the first comparison indicates the exponent of the first floating-point number exceeds the about one threshold or and the second comparison indicates the exponent of the second floating-point number exceeds the about one threshold.