Floating-point multiply-add fused unit compatible with double-precision and double-single-precision and compatibility processing method thereof
A processing method and single-precision technology, applied in the direction of electrical digital data processing, digital data processing components, instruments, etc., can solve the problems of increasing the area overhead of floating-point multipliers and adding floating-point multipliers
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[0049] In order to make the object, technical solution and advantages of the present invention clearer, the floating-point multiply-accumulator and its floating-point multiply-accumulate processing method of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention rather than limit the present invention.
[0050] In order to reduce the delay of the floating-point multiplier-adder, the floating-point multiplier-accumulator in the embodiment of the present invention adopts a dual-path algorithm, and on the basis of the dual-path algorithm, double-precision and double-single-precision operations are performed on the two paths for multiplexing.
[0051] The two-path algorithm is to calculate the exponent difference d1=exp(A)-(exp(B)+exp(C) according to the exponent of the data operand A, the exponen...
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