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Forum: ARM programming with GCC/GNU tools Error function erf(x) implementation in C.


Author: Tony Montana (Company: El Padrino Inc.) (polux)
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Hi, does anyone knows where I can find a good and simple implementation 
of erf(x) for C or C++?, because I need to convert it to Verilog A....

Author: Nikolaos Kavvadias (Company: http://www.nkavvadias.com) (nikolaos_k)
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Hi

you should consider implementing an approximation of the function via 
polynomial evaluation. This involves the computation of 
fixed-/floating-point coefficients for the polynomial either the Taylor 
or the Remez (minimax) way.

One good source for approximations of transcendental functions is 
fdlibm:

http://www.netlib.org/fdlibm

Best regards
Nikolaos Kavvadias
Research Scientist, Hardware developer, B.Sc, M.Sc, Ph.D.
http://www.nkavvadias.com

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