1 files changed, 3 insertions, 0 deletions
diff --git a/solid_angle.h b/solid_angle.h
new file mode 100644
index 0000000..99fda37
--- /dev/null
+++ b/solid_angle.h
@@ -0,0 +1,3 @@
+#include <math.h>
+
+double get_solid_angle(double *pos, double *pmt, double *n, double r);