rm using std::

Signed-off-by: James Cherry <[email protected]>

parasitics/ConcreteParasitics.cc

@@ -45,8 +45,6 @@
 
 namespace sta {
 
-using std::max;
-
 ConcreteParasitic::~ConcreteParasitic()
 {
 }
@@ -620,7 +618,7 @@ ConcreteParasiticNetwork::ensureParasiticNode(const Net *net,
     node = new ConcreteParasiticNode(net, id, network->highestNetAbove(net1) != net_);
     sub_nodes_[net_id] = node;
     if (net == net_)
-      max_node_id_ = max((int) max_node_id_, id);
+      max_node_id_ = std::max((int) max_node_id_, id);
   }
   else
     node = id_node->second;

parasitics/ReduceParasitics.cc

@@ -24,6 +24,7 @@
 
 #include "ReduceParasitics.hh"
 
+#include <algorithm>
 #include <map>
 #include <set>
 
@@ -38,8 +39,6 @@
 
 namespace sta {
 
-using std::max;
-
 typedef std::map<ParasiticNode*, double> ParasiticNodeValueMap;
 typedef std::map<ParasiticResistor*, double> ResistorCurrentMap;
 typedef std::set<ParasiticResistor*> ParasiticResistorSet;
@@ -174,7 +173,7 @@ ReduceToPi::reducePiDfs(const Pin *drvr_pin,
     + pinCapacitance(node);
   y1 = dwn_cap;
   y2 = y3 = 0.0;
-  max_resistance = max(max_resistance, src_resistance);
+  max_resistance = std::max(max_resistance, src_resistance);
 
   visit(node);
   ParasiticResistorSeq &resistors = resistor_map_[node];

parasitics/SpefReader.cc

@@ -43,8 +43,6 @@
 
 namespace sta {
 
-using std::string;
-
 bool
 readSpefFile(const std::string &filename,
              Instance *instance,
@@ -616,7 +614,7 @@ SpefTriple::value(int index) const
 ////////////////////////////////////////////////////////////////
 
 SpefScanner::SpefScanner(std::istream *stream,
-                         const string &filename,
+                         const std::string &filename,
                          SpefReader *reader,
                          Report *report) :
   yyFlexLexer(stream),