Formatting/fussiness

1 files changed, 10 insertions, 6 deletions

diff --git a/libcrystfel/src/utils.h b/libcrystfel/src/utils.h
index 44e6af6c..02aca4c7 100644
--- a/libcrystfel/src/utils.h
+++ b/libcrystfel/src/utils.h
@@ -269,21 +269,25 @@ static inline struct quaternion invalid_quaternion(void)
 	return quat;
 }
 
-/* function to compute mean and variance stably
+
+/**
  * \param x value
  * \param w weight
  * \param sumw pointer to accumulator variable for the sum of weights
  * \param mean pointer to online mean value
  * \param M2 pointer to online variance times sumw
+ *
+ * Function to compute mean and variance stably
  */
-static inline void mean_variance(const double x,
-                                 const double w,
-                                 double* sumw, double* mean, double* M2)
+static inline void mean_variance(const double x, const double w,
+                                 double *sumw, double *mean, double *M2)
 {
-	if (w<DBL_MIN) return;
 	const double temp  = w + *sumw;
 	const double delta = x - *mean;
-	const double R     = delta * w / temp;
+	const double R = delta * w / temp;
+
+	if ( w < DBL_MIN ) return;
+
 	*mean += R;
 	*M2   += *sumw*delta*R;
 	*sumw  = temp;