Processor and control method of processor
AssigneeFujitsu Limited
InventorMikio Hondo
Life of this patent
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Abstract
A processor includes: an exponent generating unit that generates an exponent part of a coefficient represented by a floating point number format based on a first part of received input data, the coefficient being obtained when an exponential function is decomposed into a series operation and the coefficient for the series operation; a storage unit that stores a mantissa part of the coefficient; a constant generating unit that reads constant data corresponding to a second part of the input data from the storage unit; and a selecting unit that selects and outputs the constant data from the constant generating unit when an instruction to be executed is a coefficient calculation instruction for calculation of the coefficient of the exponential function.
Claims6
A processor comprising:
- an exponent generating unit that generates an exponent part of a coefficient represented by a floating point number format based on a first part of received input data, the coefficient being obtained when an exponential function is decomposed into a series operation and the coefficient for the series operation;
- a storage unit that stores a mantissa part of the coefficient;
- a constant generating unit that reads constant data corresponding to a second part of the input data from the storage unit;
- and
- a selecting unit that selects and outputs the constant data from the constant generating unit when an instruction to be executed is a coefficient calculation instruction for calculation of the coefficient of the exponential function.
A control method of a processor, comprising:
- generating, by an exponent generating unit of the processor, an exponent part of a coefficient represented by a floating point number format based on a first part of received input data, the coefficient being obtained when an exponential function is decomposed into a series operation and the coefficient for the series operation;
- reading, by a constant generating unit of the processor, constant data corresponding to a second part of the input data from a storage unit that stores a mantissa part of the coefficient;
- and
- selecting and outputting, by a selecting unit of the processor, the constant data from the constant generating unit when an instruction to be executed is a coefficient calculation instruction for calculation of the coefficient of the exponential function.
Dependencies are inferred from the claim text.