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-rw-r--r--src/mathfunc.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mathfunc.h b/src/mathfunc.h
index 8258c22..89a34e6 100644
--- a/src/mathfunc.h
+++ b/src/mathfunc.h
@@ -40,6 +40,8 @@ bool has_inf(const gsl_vector *v);
bool has_nan(const gsl_matrix *m);
bool has_inf(const gsl_matrix *m);
+bool is_integer(const std::string & s);
+
double VectorVar(const gsl_vector *v);
void CenterMatrix(gsl_matrix *G);
void CenterMatrix(gsl_matrix *G, const gsl_vector *w);