bound values in export to avoid trying to export +- infinity

Signed-off-by: Philippe Edwards <philippe.edwards@rte-france.com>

Author: phiedw

commons/src/main/java/com/powsybl/openrao/commons/MeasurementRounding.java

@@ -54,6 +54,7 @@ public static BigDecimal roundValueBasedOnMargin(double value, double margin, in
             // for a number x in [0, 1[, the position of the first decimal which is not a 0 is given by ⌈-log10(x)⌉
             relevantDecimals = Math.max(defaultDecimals, (int) Math.ceil(-Math.log10(Math.abs(margin))));
         }
-        return BigDecimal.valueOf(value).setScale(relevantDecimals, RoundingMode.HALF_UP);
+        double boundedValue = Math.min(Double.MAX_VALUE, Math.max(-Double.MAX_VALUE, value));
+        return BigDecimal.valueOf(boundedValue).setScale(relevantDecimals, RoundingMode.HALF_UP);
     }
 }

ra-optimisation/search-tree-rao/src/main/java/com/powsybl/openrao/searchtreerao/result/api/FlowResult.java

@@ -89,7 +89,7 @@ default double getRelativeMargin(FlowCnec flowCnec, Unit unit) {
     }
 
     default double getRelativeMargin(FlowCnec flowCnec, TwoSides side, Unit unit) {
-        if (Double.isNaN(getPtdfZonalSum(flowCnec, side)) || getPtdfZonalSum(flowCnec, side) == 0) {
+        if (Double.isNaN(getPtdfZonalSum(flowCnec, side))) {
             return Double.NaN;
         }
         return getMargin(flowCnec, side, unit) <= 0 ? getMargin(flowCnec, side, unit)