Merge pull request #4980 from bigscoop/price-stepsize

[core] Add adapting of price to step size

Author: timmolter

xchange-core/src/main/java/org/knowm/xchange/utils/OrderValuesHelper.java

@@ -90,6 +90,11 @@ public BigDecimal adjustPrice(BigDecimal price, RoundingMode roundingMode) {
     if (scale != null) {
       result = result.setScale(scale, roundingMode);
     }
+
+    BigDecimal stepSize = metaData.getPriceStepSize();
+    if (stepSize != null && stepSize.signum() != 0) {
+      result = BigDecimalUtils.roundToStepSize(result, stepSize, roundingMode);
+    }
     return result;
   }
 }