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isprime

calculates if a number is prime

(1977 downloads for this version - 1977 downloads for all versions)

Details

Version

1.0

Author

JFER GIRJ

Maintainer

JFER GIRJ

Category

Numerical Maths

License

BSD (4.4)

Supported Scilab Version

5.4

Creation Date

April 14, 2012

Description

            Returns %T or %F 

Use:

isprime(arg).  arg is integer >=0

Files (1)

[96 bytes]

fn_isprime.sce

Miscellaneous file

Returns 1 if true, 0 if not

Use:

isprime(arg).  arg is integer >=0



thanks to Allan CORNET for show me how to improve performance of this function

Upload date : 2012-04-16 21:16:36
MD5         : c57f81aaa7e065093e6c60487c9b850c
SHA1        : 4bb66ed3b73a3148a749d795f52d053348061b28
Downloads   : 1977

News (0)

Comments (2) ↑ Leave a comment

Comment from Allan CORNET -- April 14, 2012, 10:10:54 AM

Hi,

A faster and easier way is:


function r = isprime(number)
  p = factor(number);
  r = (size(p, '*') == 1);
endfunction


Thanks

Allan

Comment from JFER GIRJ

-- April 16, 2012, 06:55:33 PM

thanks for the tip.  I'm new with scilab and i need to learn.  I appreciate your comment

JF