use cmath

* avoid using #include <math.h>
* add std:: namespace prefix when calling <cmath> functions

3 files changed, 6 insertions, 7 deletions

diff --git a/vdslib/src/tests/distribution/datadistributiontest.cpp b/vdslib/src/tests/distribution/datadistributiontest.cpp
index 8bdc1d86120..f81e0992756 100644
--- a/vdslib/src/tests/distribution/datadistributiontest.cpp
+++ b/vdslib/src/tests/distribution/datadistributiontest.cpp
@@ -6,7 +6,6 @@
 #include <vespa/vdslib/distribution/distribution.h>
 #include <vespa/vdslib/state/clusterstate.h>
 #include <vespa/vdslib/state/random.h>
-#include <math.h>
 #include <ctime>
 #include <tests/distribution/bucketvector.h>
 #include <tests/distribution/randombucket.h>
diff --git a/vdslib/src/tests/distribution/distributiontest.cpp b/vdslib/src/tests/distribution/distributiontest.cpp
index 6103762abd8..698b5f8da09 100644
--- a/vdslib/src/tests/distribution/distributiontest.cpp
+++ b/vdslib/src/tests/distribution/distributiontest.cpp
@@ -736,7 +736,7 @@ getMaxAbs(const std::vector<int> distribution, double avg, int start)
 {
     int max = start;
     for (uint32_t i = 0; i < distribution.size(); i++) {
-        if(fabs(distribution[i]-avg) > fabs(distribution[max]-avg))
+        if (std::fabs(distribution[i]-avg) > std::fabs(distribution[max]-avg))
             max = i;
     }
     return max;
diff --git a/vdslib/src/vespa/vdslib/distribution/distribution.cpp b/vdslib/src/vespa/vdslib/distribution/distribution.cpp
index 0ed571b1b35..d5cea4920c2 100644
--- a/vdslib/src/vespa/vdslib/distribution/distribution.cpp
+++ b/vdslib/src/vespa/vdslib/distribution/distribution.cpp
@@ -286,8 +286,8 @@ Distribution::getIdealDisk(const NodeState& nodeState, uint16_t nodeIndex,
                     continue;
                 }
                 if (diskState.getCapacity() != 1.0) {
-                    score = pow(score,
-                                1.0 / diskState.getCapacity().getValue());
+                    score = std::pow(score,
+                                     1.0 / diskState.getCapacity().getValue());
                 }
                 if (score > maxScore) {
                     maxScore = score;
@@ -412,7 +412,7 @@ Distribution::getIdealGroups(const document::BucketId& bucket,
         if (it->second->getCapacity() != 1) {
                 // Capacity shouldn't possibly be 0.
                 // Verified in Group::setCapacity()
-            score = pow(score, 1.0 / it->second->getCapacity().getValue());
+            score = std::pow(score, 1.0 / it->second->getCapacity().getValue());
         }
         if (score > tmpResults.back()._score) {
             tmpResults.push_back(ScoredGroup(it->second, score));
@@ -457,7 +457,7 @@ Distribution::getIdealDistributorGroup(const document::BucketId& bucket,
         if (it->second->getCapacity() != 1) {
                 // Capacity shouldn't possibly be 0.
                 // Verified in Group::setCapacity()
-            score = pow(score, 1.0 / it->second->getCapacity().getValue());
+            score = std::pow(score, 1.0 / it->second->getCapacity().getValue());
         }
         if (score > result._score) {
             if (!_distributorAutoOwnershipTransferOnWholeGroupDown
@@ -577,7 +577,7 @@ Distribution::getIdealNodes(const NodeType& nodeType,
             double score = random.nextDouble();
             ++randomIndex;
             if (nodeState.getCapacity() != vespalib::Double(1.0)) {
-                score = pow(score, 1.0 / nodeState.getCapacity().getValue());
+                score = std::pow(score, 1.0 / nodeState.getCapacity().getValue());
             }
             if (score > tmpResults.back()._score) {
                 for (std::list<ScoredNode>::iterator it = tmpResults.begin();