version 5.4.0

remove CORS default header from PIHTTPServer
fix several docs
fix PIMathVector::dot return type
add units directory with PIUnits facility

libs/main/units/piunits_class_distance.cpp

@@ -0,0 +1,69 @@
+/*
+    PIP - Platform Independent Primitives
+    Distance units
+    Ivan Pelipenko peri4ko@yandex.ru
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "piunits_class_distance.h"
+
+
+PIString PIUnits::Class::Distance::name(int type) const {
+	switch (type) {
+	case Meter: return "meter"_tr("PIUnitsDistance");
+	}
+	return Class::Internal::unknown;
+}
+
+
+PIString PIUnits::Class::Distance::unit(int type) const {
+	switch (type) {
+	case Meter: return "m"_tr("PIUnitsDistance");
+	}
+	return Class::Internal::unknown;
+}
+
+
+double PIUnits::Class::Distance::convert(double v, int from, int to) const {
+	switch (to) {
+	case Meter: return v;
+	}
+	return v;
+}
+
+
+PIString PIUnits::Class::Distance::valueToString(double v, char format, int prec) const {
+	return PIString::fromNumber(v, format, prec);
+}
+
+
+bool PIUnits::Class::Distance::supportPrefixes(int type) const {
+	return true;
+}
+
+
+bool PIUnits::Class::Distance::supportPrefixesNon3(int type) const {
+	return true;
+}
+
+
+bool PIUnits::Class::Distance::supportPrefixesGreater(int type) const {
+	return ClassBase::supportPrefixesGreater(type);
+}
+
+
+bool PIUnits::Class::Distance::supportPrefixesSmaller(int type) const {
+	return ClassBase::supportPrefixesSmaller(type);
+}