1 files changed, 1 insertions, 0 deletions

diff --git a/lib/GSL/gsl-aux.h b/lib/GSL/gsl-aux.h
index 89bd75e..2be07c1 100644
--- a/lib/GSL/gsl-aux.h
+++ b/lib/GSL/gsl-aux.h
@@ -61,6 +61,7 @@ int deriv(int code, double f(double, void*), double x, double h, double * result
 
 double gsl_sf_erf(double);
 double gsl_sf_erf_Z(double);
+double gsl_sf_gamma(double);
 
 int gsl_sf_bessel_J0_e(double, double*); // hmmm...
 int gsl_sf_exp_e10_e(double, double*);   // HMMMMM...