Convert to zoned format from decimal floating point format

A computer system for executing a machine instruction in a central processing unit, the computer system comprising:

• a memory;
• and
• a processor in communications with the memory, wherein the computer system is configured to perform a method, said method comprising:
• obtaining a machine instruction for execution, the machine instruction being defined for computer execution according to a computer architecture, the machine instruction comprising:
• at least one opcode field to provide an opcode, the opcode identifying a convert to zoned from decimal floating point function;
• a first register field designating a first register, the first register comprising a first operand;
• a second register field and a displacement field, wherein contents of a second register designated by the second register field are combined with contents of the displacement field to form an address of a second operand;
• and
• a mask field, the mask field comprising one or more controls used during execution of the machine instruction;
• and
• executing the machine instruction, the executing comprising:
• converting at least a portion of the first operand in a decimal floating point format to a zoned format;
• and
• placing a result of the converting at a location designated by the address of the second operand.

A method for executing a machine instruction in a central processing unit, the method comprising:

• obtaining, by a processor, a machine instruction for execution, the machine instruction being defined for computer execution according to a computer architecture, the machine instruction comprising:
• at least one opcode field to provide an opcode, the opcode identifying a convert to zoned from decimal floating point function;
• a first register field designating a first register, the first register comprising a first operand;
• a second register field and a displacement field, wherein contents of a second register designated by the second register field are combined with contents of the displacement field to form an address of a second operand;
• and
• a mask field, the mask field comprising one or more controls used during execution of the machine instruction;
• and
• executing the machine instruction, the executing comprising:
• converting at least a portion of the first operand in a decimal floating point format to a zoned format;
• and
• placing a result of the converting at a location designated by the address of the second operand.