Hello all!

I am in the need of help in creating random decimal numbers in C.
The values are supposed to be in the intervall of -1.4 to 1.4.
Would anyone who knows how to solve this be so kind as to pose a code passage containing the solution?

Many, many thanks and kind regards!

Well, sorry, but this is a Matlab forum and you might get better advice on a C forum! However, one possibility would be to use the rand() function, if its statistical properties are good enough for your application (you have to test). As far as I remember, it returns integers in the range 0 to RAND_MAX, so to get a float in the range 0 to 1 you just cast the result and divide by RAND_MAX.

Wel, sorry, but I am writing S-Functions in C which delivers way better performance than M-File S-Functions. Therefor this can be understood as a Matlab related problem. But thanks for the information.

Dear Ansgar,

there is an implementation of Marsaglia's KISS random number generator in the C-Mex function SHUFFLE published in the FEX.

Good luck, Jan