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-rw-r--r--src/mathfunc.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mathfunc.cpp b/src/mathfunc.cpp
index d3804dd..91c0271 100644
--- a/src/mathfunc.cpp
+++ b/src/mathfunc.cpp
@@ -40,6 +40,7 @@
#pragma message "GSL version " GSL_VERSION
#endif
+#include "gsl/gsl_sys.h" // for gsl_isnan, gsl_isinf, gsl_isfinite
#include "gsl/gsl_blas.h"
#include "gsl/gsl_cdf.h"
#include "gsl/gsl_linalg.h"