Hello,

I'd like to use arduino for probability calculations.

I need functions for cumulatives of exponential, Weibull, normal and Gamma distributions which works like excel ones: Norm.dist() Expon.dist() Weibull.dist() Gamma.dist()

Are there such ones for arduino?

The documentation for math.h is here; http://www.nongnu.org/avr-libc/user-manual/group__avr__math.html

You will have to write your own functions and bear in mind that Arduinos have limited memory.

I'd like to use arduino for probability calculations

Why? Arduinos are microcontrollers not microcomputers.

Pete

which works like excel ones

They won't exactly, because the Arduino supports only single precision floating point operations.

You can easily find C code for these functions with Google.