3 files changed, 3 insertions, 0 deletions
diff --git a/src/c/elementaryFunctions/nansum/dnansuma.c b/src/c/elementaryFunctions/nansum/dnansuma.c
index adc4a02b..2944d635 100644
--- a/src/c/elementaryFunctions/nansum/dnansuma.c
+++ b/src/c/elementaryFunctions/nansum/dnansuma.c
@@ -15,6 +15,7 @@
 #include "types.h"
 #include "uint16.h"
 #include "addition.h"
+#include "isnan.h"
 
 double dnansuma(double *in, int size)
 {
diff --git a/src/c/elementaryFunctions/nansum/snansuma.c b/src/c/elementaryFunctions/nansum/snansuma.c
index 8c1cebbb..0b8c9c37 100644
--- a/src/c/elementaryFunctions/nansum/snansuma.c
+++ b/src/c/elementaryFunctions/nansum/snansuma.c
@@ -15,6 +15,7 @@
 #include "types.h"
 #include "uint16.h"
 #include "addition.h"
+#include "isnan.h"
 
 float snansuma(float *in, int size)
 {
diff --git a/src/c/elementaryFunctions/nansum/znansuma.c b/src/c/elementaryFunctions/nansum/znansuma.c
index cb839f02..7f679e47 100644
--- a/src/c/elementaryFunctions/nansum/znansuma.c
+++ b/src/c/elementaryFunctions/nansum/znansuma.c
@@ -15,6 +15,7 @@
 #include "types.h"
 #include "doubleComplex.h"
 #include "addition.h"
+#include "isnan.h"
 
 doubleComplex znansuma(doubleComplex *in, int size)
 {