Systems, apparatuses, and methods for controllable sine and/or cosine operations

A method comprising:

• decoding an instruction having fields for a packed data source operand, a packed data destination operand, and an immediate value, and
• executing the decoded instruction to:
• compute at least a real output value and an imaginary output value based on at least a cosine calculation and a sine calculation, wherein the cosine and sine calculations are each based on an index value from the packed data source operand;
• add the index value with an index increment value from the packed data source operand to create an updated index value;
• and
• store the real output value, the imaginary output value, and the updated index value to the packed data destination operand.

A non-transitory machine-readable medium storing an instruction which, when executed by a processor, causes the processor to perform a method, the method comprising:

• decoding an instruction having fields for a packed data source operand, a packed data destination operand, and an immediate value, and
• executing the decoded instruction to:
• compute at least a real output value and an imaginary output value based on at least a cosine calculation and a sine calculation, wherein the cosine and sine calculations are each based on an index value from the packed data source operand;
• add the index value with an index increment value from the packed data source operand to create an updated index value;
• and
• store the real output value, the imaginary output value, and the updated index value to the packed data destination operand.

An apparatus comprising:

• a decoder means to decode an instruction having fields for a packed data source operand, a packed data destination operand, and an immediate value;
• and
• an execution means to execute the decoded instruction to:
• compute at least a real output value and an imaginary output value based on at least a cosine calculation and a sine calculation, wherein the cosine and sine calculations are each based on an index value from the packed data source operand;
• add the index value with an index increment value from the packed data source operand to create an updated index value;
• and
• store the real output value, the imaginary output value, and the updated index value to the packed data destination operand.