| 摘要 |
A processor (100) contains a storage area (120) for a dynamic rounding mode control value, and a circuit (124) coupled to the storage area configured to execute an instruction using a rounding mode. When the instruction is a first predetermined instruction, a first predetermined rounding mode is used during execution of the instruction. When the instruction is not the first predetermined instruction and the rounding mode specified by the instruction is not a dynamic override, the circuit executes the instruction using a rounding mode (110) specified by the instruction. When the instruction is not the first predetermined instruction and the rounding mode specified by the instruction is the dynamic override, the circuit executes the instruction using a rounding mode specified by the dynamic rounding mode control value (115). |
