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-rw-r--r--host/lib/utils/gain_group.cpp8
1 files changed, 6 insertions, 2 deletions
diff --git a/host/lib/utils/gain_group.cpp b/host/lib/utils/gain_group.cpp
index 9428702d1..71caf33be 100644
--- a/host/lib/utils/gain_group.cpp
+++ b/host/lib/utils/gain_group.cpp
@@ -39,7 +39,7 @@ static bool compare_by_step_size(
*
* Due to small doubleing-point inaccuracies:
* num = n*step + e, where e is a small inaccuracy.
- * When e is negative, floor would yeild (n-1)*step,
+ * When e is negative, floor would yield (n-1)*step,
* despite that n*step is really the desired result.
* This function is designed to mitigate that issue.
*
@@ -49,7 +49,11 @@ static bool compare_by_step_size(
* \return a multiple of step approximating num
*/
template <typename T> static T floor_step(T num, T step, T e = T(0.001)){
- return step*int(num/step + e);
+ if (num < T(0)) {
+ return step*int(num/step - e);
+ } else {
+ return step*int(num/step + e);
+ }
}
gain_group::~gain_group(void){