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Class Information
Number: 708/502
Name: Electrical computers: arithmetic processing and calculating > Electrical digital calculating computer > Particular function performed > Arithmetical operation > Floating point > Reciprocal
Description: Subject matter wherein the operation performed is the determination of the reciprocal.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7406589 |
Processor having efficient function estimate instructions |
Jul. 29, 2008 |
| 7124161 |
Apparatus and method for implementing efficient arithmetic circuits in programmable logic devices |
Oct. 17, 2006 |
| 7117238 |
Method and system for performing pipelined reciprocal and reciprocal square root operations |
Oct. 3, 2006 |
| 7080112 |
Method and apparatus for computing an approximation to the reciprocal of a floating point number in IEEE format |
Jul. 18, 2006 |
| 7027598 |
Residue number system based pre-computation and dual-pass arithmetic modular operation approach to implement encryption protocols efficiently in electronic integrated circuits |
Apr. 11, 2006 |
| 7027597 |
Pre-computation and dual-pass modular arithmetic operation approach to implement encryption protocols efficiently in electronic integrated circuits |
Apr. 11, 2006 |
| 6963895 |
Floating point pipeline method and circuit for fast inverse square root calculations |
Nov. 8, 2005 |
| 6952710 |
Apparatus, methods and computer program products for performing high speed division calculations |
Oct. 4, 2005 |
| 6941334 |
Higher precision divide and square root approximations |
Sep. 6, 2005 |
| 6912559 |
System and method for improving the accuracy of reciprocal square root operations performed by a floating-point unit |
Jun. 28, 2005 |
| 6769006 |
Method and apparatus for calculating a reciprocal |
Jul. 27, 2004 |
| 6732134 |
Handler for floating-point denormalized numbers |
May. 4, 2004 |
| 6665693 |
Digital signal processing circuits, systems, and methods implementing approximations for a reciprocal |
Dec. 16, 2003 |
| 6654777 |
Single precision inverse square root generator |
Nov. 25, 2003 |
| 6601080 |
Hybrid representation scheme for factor L in sparse direct matrix factorization |
Jul. 29, 2003 |
| 6581085 |
Approximation circuit and method |
Jun. 17, 2003 |
| 6553120 |
Method for data decorrelation |
Apr. 22, 2003 |
| 6460063 |
Division circuit and graphic display processing apparatus |
Oct. 1, 2002 |
| 6385713 |
Microprocessor with parallel inverse square root logic for performing graphics function on packed data elements |
May. 7, 2002 |
| 6349319 |
Floating point square root and reciprocal square root computation unit in a processor |
Feb. 19, 2002 |
| 6341300 |
Parallel fixed point square root and reciprocal square root computation unit in a processor |
Jan. 22, 2002 |
| 6260054 |
Reciprocal generator using piece-wise-linear segments of varying width with floating-point format |
Jul. 10, 2001 |
| 6256653 |
Multi-function bipartite look-up table |
Jul. 3, 2001 |
| 6223192 |
Bipartite look-up table with output values having minimized absolute error |
Apr. 24, 2001 |
| 6175907 |
Apparatus and method for fast square root calculation within a microprocessor |
Jan. 16, 2001 |
| 6163791 |
High accuracy estimates of elementary functions |
Dec. 19, 2000 |
| 6128639 |
Array address and loop alignment calculations |
Oct. 3, 2000 |
| 6078938 |
Method and system for solving linear systems |
Jun. 20, 2000 |
| 5973705 |
Geometry pipeline implemented on a SIMD machine |
Oct. 26, 1999 |
| 5875355 |
Method for transposing multi-bit matrix wherein first and last sub-string remains unchanged while intermediate sub-strings are interchanged |
Feb. 23, 1999 |
| 5768171 |
Method and apparatus for improving the precision or area of a memory table used in floating-point computations |
Jun. 16, 1998 |
| 5305248 |
Fast IEEE double precision reciprocals and square roots |
Apr. 19, 1994 |
| 5220524 |
Machine method to perform newton iterations for reciprocals |
Jun. 15, 1993 |
| 5206823 |
Apparatus to perform Newton iterations for reciprocal and reciprocal square root |
Apr. 27, 1993 |
| 5157624 |
Machine method to perform newton iterations for reciprocal square roots |
Oct. 20, 1992 |
| 4823301 |
Method and circuit for computing reciprocals |
Apr. 18, 1989 |
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