Fast method for calculating powers of two as a floating...

Details Fast method for calculating powers of two as a floating... Fast method for calculating powers of two as a floating...

2004-02-18

2008-01-22

Malzahn, D. H. (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

Reexamination Certificate

active

07321914

ABSTRACT:
A computing system is adapted to calculate an exponent portion of a floating point data type, and is preferably employed in calculating powers of two in a computer language processing environment supporting a union declaration functionality and a left shift functionality. Accordingly, an input receives an exponent value, and a bias application module biases the exponent value based on a selected precision of a floating point data type. Also, a storage module stores the exponent value in a storage variable having a size determined based on the selected precision. Further, a left shift application module shifts the exponent value left by a number of bits determined based on the selected precision. Finally, an output returns the storage variable as the floating point data type having the selected precision.

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Steve Hollasch, “IEEE Standard 754 Floating Point Numbers”, http://www.research.microsoft.com/˜hollasch/cgindex/coding/ieeefloat.html, Jan. 2, 2003, pp. 1-8.

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