Floating point round-off amount determination processors, methods, systems, and instructions

(canceled)

An apparatus comprising:

• a plurality of registers;
• and
• a floating point execution unit coupled with the plurality of the registers, the floating point execution unit operable, in response to a floating point round-off amount determination instruction indicating a source of one or more floating point data elements, indicating a number of fraction bits after a radix point, and indicating a destination, to store a result including one or more result floating point data elements in the destination, each of the one or more result floating point data elements including a difference between a corresponding floating point data element of the source in a corresponding position and a rounded version of the corresponding floating point data element of the source that has been rounded to the indicated number of the fraction bits.

(canceled)

(canceled)

An article of manufacture comprising:

• a machine-readable storage medium including one or more solid data storage materials, the machine-readable storage medium storing a floating point round-off amount determination instruction,
• the floating point round-off amount determination instruction to indicate a source of one or more floating point data elements, to indicate a number of fraction bits after a radix point, and to indicate a destination storage location, and the floating point round-off amount determination instruction if executed by a machine operable to cause the machine to perform operations comprising:
• storing a result including one or more result floating point data elements in the destination storage location, each of the one or more result floating point data elements including a difference between a corresponding floating point data element of the source in a corresponding position and a rounded version of the corresponding floating point data element of the source that has been rounded to the indicated number of the fraction bits.