gsl-nim GNU Scientific Library for nim

• This is GNU GSL C Api wrapped for nim (generated using c2nim).
• GSL Home Page
• GSL Github
• GSL Doc
• Header files

Install

• 1. install GNU GSL library

  • Ubuntu

    sudo apt-get install libgsl-dev

  • MacOs

    brew install gsl

  • Windows

    Why do you want to do this on windows? Use WSL maybe.

  • Build from source

    download source code from https://www.gnu.org/software/gsl/

    ./configure --prefix=???
    make
    make check
    make install
    

• 2. install gsl-nim package

  git clone https://github.com/YesDrX/gsl-nim
  cd gsl-nim
  nimble install
  

  or

  nimble install gsl
  

Sample code & Test code

samples

tests

• example : solve for root of a 5th order polynomial equation

import gsl/gsl_poly
import strformat

var
  i : cint
  a = @[-1.0, 0.0, 0.0, 0.0, 0.0, 1.0]
  z = newSeq[cdouble](10)

  w = gsl_poly_complex_workspace_alloc(6)

discard gsl_poly_complex_solve(a[0].addr, 6, w, z[0].addr)
gsl_poly_complex_workspace_free(w)

echo fmt"Roots for x^5 - 1 = 0"
for i in 0 .. 4:
  echo fmt"z{i} = {z[2*i]} + {z[2*i+1]} i"

• output

Roots for x^5 - 1 = 0
z0 = -0.8090169943749477 + 0.5877852522924734 i
z1 = -0.8090169943749477 + -0.5877852522924734 i
z2 = 0.3090169943749475 + 0.951056516295153 i
z3 = 0.3090169943749475 + -0.951056516295153 i
z4 = 0.9999999999999999 + 0.0 i