GNU Scientific Library – Reference Manual: Elliptic Functions (Jacobi)

Next: Error Functions, Previous: Elliptic Integrals, Up: Special Functions [Index]

### 7.14 Elliptic Functions (Jacobi)

The Jacobian Elliptic functions are defined in Abramowitz & Stegun, Chapter 16. The functions are declared in the header file `gsl_sf_elljac.h`.

Function: int gsl_sf_elljac_e (double u, double m, double * sn, double * cn, double * dn)

  This function computes the Jacobian elliptic functions sn(u|m), cn(u|m), dn(u|m) by descending Landen transformations.