1 files changed, 1 insertions, 0 deletions
diff --git a/src/random.h b/src/random.h
index 747cfeb..e2cba7d 100644
--- a/src/random.h
+++ b/src/random.h
@@ -21,6 +21,7 @@
 #include <stdlib.h> /* for size_t */
 
 double randn(void);
+void rand_ball(double *pos, double radius);
 void rand_sphere(double *dir);
 void ran_choose_weighted(int *dest, double *w, size_t k, int *src, size_t n);