A couple more compile fixes for Linux

Author: JustSid

source/viewer/utilities/data_decimator.cpp

@@ -2,6 +2,7 @@
 // Created by Sidney on 28/07/2020.
 //
 
+#include <cmath>
 #include "data_decimator.h"
 
 std::vector<telemetry_data_point> decimate_data(const std::vector<telemetry_data_point> &input, uint32_t threshold)
@@ -21,8 +22,8 @@ std::vector<telemetry_data_point> decimate_data(const std::vector<telemetry_data
 	for(size_t i = 0; i < threshold - 2; ++ i)
 	{
 		// Calculate the average
-		size_t range_start = floor((i + 1) * increment) + 1;
-		size_t range_end = std::min((size_t)(floor((i + 2) * increment) + 1), input.size());
+		size_t range_start = std::floor((i + 1) * increment) + 1;
+		size_t range_end = std::min((size_t)(std::floor((i + 2) * increment) + 1), input.size());
 
 		double average_x = 0.0;
 		double average_y = 0.0;
@@ -38,8 +39,8 @@ std::vector<telemetry_data_point> decimate_data(const std::vector<telemetry_data
 
 
 
-		range_start = floor((i + 0) * increment) + 1;
-		range_end = std::min((size_t)(floor((i + 1) * increment) + 1), input.size());
+		range_start = std::floor((i + 0) * increment) + 1;
+		range_end = std::min((size_t)(std::floor((i + 1) * increment) + 1), input.size());
 
 		const double point_a_x = input[a].timestamp;
 		const double point_a_y = input[a].value.get<double>();

source/viewer/widgets/chart_widget.cpp

@@ -449,7 +449,7 @@ void chart_widget::rescale_axes()
 			case telemetry_unit::memory:
 				min_value = scale_memory(axis->minimum);
 				max_value = scale_memory(axis->maximum);
-				max_value = 1 << uint32_t(ceil(log2(max_value)));
+				max_value = 1 << uint32_t(std::ceil(std::log2(max_value)));
 				break;
 
 			default:

source/viewer/widgets/document_window.cpp

@@ -737,7 +737,7 @@ void document_window::update_telemetry()
 
 				QTreeWidgetItem *item = new QTreeWidgetItem(root);
 				item->setText(0, QString::number(event.get_id()));
-				item->setText(1, QString::number(ceilf(event.get_duration() * 1000.0f)));
+				item->setText(1, QString::number(std::ceil(event.get_duration() * 1000.0f)));
 				item->setText(2, path);
 
 				for (auto &child: event.get_children())