Use math functions from std namespace

<cmath> needs to declare the math functions in the std namespace. Optionally it
can also put them in the global namespace, but for example the standard library
for QNX 6.6 does not do so.

Change-Id: Ie4d15d419d7a93c1c04d2b6982dba740d522740a
Reviewed-by: Robin Burchell <robin.burchell@crimson.no>

3 files changed, 3 insertions, 3 deletions

diff --git a/src/benchmarkrunner.cpp b/src/benchmarkrunner.cpp
index 33dd32a..90c29a8 100644
--- a/src/benchmarkrunner.cpp
+++ b/src/benchmarkrunner.cpp
@@ -131,7 +131,7 @@ qreal stddev(qreal avg, const QList<qreal> &list)
         dev += (v - avg) * (v - avg);
 
     // Note: - 1 is intentional!
-    return ::sqrt(dev / (list.size() - 1));
+    return std::sqrt(dev / (list.size() - 1));
 }
 
 qreal average(const QList<qreal> &list)
diff --git a/src/resultrecorder.cpp b/src/resultrecorder.cpp
index e69794e..343c94a 100644
--- a/src/resultrecorder.cpp
+++ b/src/resultrecorder.cpp
@@ -156,7 +156,7 @@ void ResultRecorder::recordOperationsPerFrameAverage(qreal ops, int samples, qre
     benchMap["samples-total"] = samples; // compatibility
     benchMap["standard-deviation"] = stddev;
     benchMap["standard-deviation-all-samples"] = stddev; // compatibility
-    benchMap["standard-error"] = stddev / sqrt(samples);
+    benchMap["standard-error"] = stddev / std::sqrt(samples);
     benchMap["coefficient-of-variation"] = stddev / ops;
     benchMap["median"] = median;
 
diff --git a/src/testmodel.cpp b/src/testmodel.cpp
index d53c063..ef28459 100644
--- a/src/testmodel.cpp
+++ b/src/testmodel.cpp
@@ -76,7 +76,7 @@ void TestModel::setRowNumber(int rowNumber)
         m_urls.append(QUrl(QString("http://example.org/some-thing-here/%1").arg(i)));
         m_jsValues.append(QJSValue(i)); // TODO: should we test object types (like strings?)
         m_dateTimes.append(QDateTime(QDate(1995, 5, 20)).addSecs(i));
-        m_colors.append(QColor::fromHslF(fmod(0.57 * i, 1.0), 0.5, 0.5));
+        m_colors.append(QColor::fromHslF(std::fmod(0.57 * i, 1.0), 0.5, 0.5));
         m_sizes.append(QSize(i, i));
         m_points.append(QPoint(i, i));
         m_rects.append(QRect(0, 0, i, i));