Trigonometric Functions With Error Estimates

Function: double gsl_sf_sin_err (double x, double dx)

Function: int gsl_sf_sin_err_e (double x, double dx, gsl_sf_result * result)

These routines compute the sine of an angle x with an associated absolute error dx, @math{\sin(x \pm dx)}.

Function: double gsl_sf_cos_err (double x, double dx)

Function: int gsl_sf_cos_err_e (double x, double dx, gsl_sf_result * result)

These routines compute the cosine of an angle x with an associated absolute error dx, @math{\cos(x \pm dx)}.