Negative zero control in instruction execution

A computer system for facilitating processing within a computing environment, the computer system comprising:

• a memory storing instructions;
• and
• a processor coupled to the memory and configured to execute the instructions, wherein the computer system is configured to perform a method based on execution of the instructions by the processor, the method comprising:
• obtaining an instruction, of the instructions, to perform one or more operations using an input value, the instruction being a single architected instruction, and the instruction comprising a negative zero control indicator indicating whether negative zero control is enabled for execution of the instruction;
• and
• executing the instruction, the executing comprising:
• performing the one or more operations using the input value to obtain a result, wherein the one or more operations comprises obtaining a portion of the input value to move into a location as an output of execution of the instruction, the portion of the input value comprising numerical values and a sign associated with those numerical values, wherein the result comprises the obtained portion of the input value, in which the sign of the obtained portion of the input value is a sign of the result;
• determining whether to control the sign of the result, the determining being based at least in part on the negative zero control indicator being set to a defined value, wherein the determining whether to control the sign of the result determines whether to control output of the sign of the portion of the input value, as provided in the result, in the output of the execution of the instruction;
• and
• performing further processing, as part executing the instruction, based on the determining.

A computer-implemented method of facilitating processing within a computing environment, the computer-implemented method comprising:

• obtaining an instruction to perform one or more operations using an input value, the instruction being a single architected instruction, and the instruction comprising a negative zero control indicator indicating whether negative zero control is enabled for execution of the instruction;
• and
• executing the instruction, the executing comprising:
• performing the one or more operations using the input value to obtain a result, wherein the one or more operations comprises obtaining a portion of the input value to move into a location as an output of execution of the instruction, the portion of the input value comprising numerical values and a sign associated with those numerical values, wherein the result comprises the obtained portion of the input value, in which the sign of the obtained portion of the input value is a sign of the result;
• determining whether to control the sign of the result, the determining being based at least in part on the negative zero control indicator being set to a defined value, wherein the determining whether to control the sign of the result determines whether to control output of the sign of the portion of the input value, as provided in the result, in the output of the execution of the instruction;
• and
• performing further processing, as part of executing the instruction, based on the determining.