Title :
Arithmetic processing unit for reciprocal operations
Author :
Rounioja, Kim ; Parviainen, Jan A.
Author_Institution :
Nokia Mobile Phones, Oulu, Finland
Abstract :
A new method for solving square root, reciprocal square root and division has been developed. The method utilizes look up tables that are compressed by normalizing the fixed point operand to floating point format, using symmetric table addition method and converting value back to fixed point format. Developed method enables significant speed-ups in graphics processing.
Keywords :
computer graphics; digital arithmetic; digital signal processing chips; arithmetic processing unit; division solution; fixed point operand; floating point format; graphics processing; look up tables; reciprocal operations; reciprocal square root; symmetric table addition method; Acceleration; Approximation methods; Arithmetic; Equations; Graphics; Hardware; Mobile handsets; Power dissipation; Rendering (computer graphics); Signal processing algorithms;
Conference_Titel :
System-on-Chip, 2003. Proceedings. International Symposium on
Print_ISBN :
0-7803-8160-2
DOI :
10.1109/ISSOC.2003.1267729
