Switch C++-style C headers with their C equivalents.

The C++ headers define the C functions within the std:: namespace, but
we mainly don't use the std:: namespace for C functions. Therefore we
should include the C headers.

BUG=1833
R=tommi@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/1917004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@4486 4adac7df-926f-26a2-2b94-8c16560cd09d

webrtc/modules/video_coding/main/test/generic_codec_test.cc

@@ -10,7 +10,7 @@
 
 #include "webrtc/modules/video_coding/main/test/generic_codec_test.h"
 
-#include <cmath>
+#include <math.h>
 #include <stdio.h>
 
 #include "webrtc/common_video/interface/i420_video_frame.h"

webrtc/modules/video_coding/main/test/jitter_estimate_test.cc

@@ -9,7 +9,7 @@
  */
 
 #include <stdio.h>
-#include <ctime>
+#include <time.h>
 #include "JitterEstimateTest.h"
 
 using namespace webrtc;
@@ -25,8 +25,8 @@ _counter(0),
 _lossrate(0.0)
 {
     // Assign to random value between 0 and max of unsigned int
-    _seed = static_cast<unsigned>(std::time(0));
-    std::srand(_seed);
+    _seed = static_cast<unsigned>(time(0));
+    srand(_seed);
     _prevTimestamp = static_cast<unsigned int>((std::rand() + 1.0)/(RAND_MAX + 1.0)*(pow((float) 2, (long) sizeof(unsigned int)*8)-1));
     _prevWallClock = VCMTickTime::MillisecondTimestamp();
 }

webrtc/modules/video_coding/main/test/jitter_estimate_test.h

@@ -14,8 +14,8 @@
 #include "typedefs.h"
 #include "jitter_buffer.h"
 #include "jitter_estimator.h"
-#include <cstdlib>
-#include <cmath>
+#include <stdlib.h>
+#include <math.h>
 
 double const pi = 4*std::atan(1.0);
 
@@ -28,7 +28,7 @@ public:
     {
         double r1 = (std::rand() + 1.0)/(RAND_MAX + 1.0); // gives equal distribution in (0, 1]
         double r2 = (std::rand() + 1.0)/(RAND_MAX + 1.0);
-        return _mu + _sigma * std::sqrt(-2*std::log(r1))*std::cos(2*pi*r2);
+        return _mu + _sigma * sqrt(-2*std::log(r1))*std::cos(2*pi*r2);
     }
 
     double GetAverage()

webrtc/modules/video_coding/main/test/mt_test_common.cc

@@ -10,7 +10,7 @@
 
 #include "webrtc/modules/video_coding/main/test/mt_test_common.h"
 
-#include <cmath>
+#include <math.h>
 
 #include "webrtc/modules/rtp_rtcp/interface/rtp_header_parser.h"
 #include "webrtc/modules/utility/interface/rtp_dump.h"

webrtc/modules/video_coding/main/test/pcap_file_reader.cc

@@ -16,8 +16,9 @@
 #else
 #include <arpa/inet.h>
 #endif
-#include <cassert>
-#include <cstdio>
+#include <assert.h>
+#include <stdio.h>
+
 #include <map>
 #include <string>
 #include <vector>

webrtc/modules/video_coding/main/test/rtp_file_reader.cc

@@ -16,8 +16,8 @@
 #else
 #include <arpa/inet.h>
 #endif
-#include <cassert>
-#include <cstdio>
+#include <assert.h>
+#include <stdio.h>
 
 #include "webrtc/modules/video_coding/main/test/rtp_player.h"
 #include "webrtc/system_wrappers/interface/scoped_ptr.h"

webrtc/modules/video_coding/main/test/rtp_player.cc

@@ -10,7 +10,8 @@
 
 #include "webrtc/modules/video_coding/main/test/rtp_player.h"
 
-#include <cstdio>
+#include <stdio.h>
+
 #include <map>
 
 #include "webrtc/modules/rtp_rtcp/interface/rtp_header_parser.h"

webrtc/modules/video_coding/main/test/test_callbacks.cc

@@ -10,7 +10,7 @@
 
 #include "webrtc/modules/video_coding/main/test/test_callbacks.h"
 
-#include <cmath>
+#include <math.h>
 
 #include "webrtc/common_video/libyuv/include/webrtc_libyuv.h"
 #include "webrtc/modules/rtp_rtcp/interface/rtp_header_parser.h"

webrtc/modules/video_coding/main/test/test_callbacks.h

@@ -16,10 +16,11 @@
  */
 
 
-#include <cstdlib>
+#include <stdlib.h>
+#include <string.h>
+
 #include <fstream>
 #include <list>
-#include <string.h>
 
 #include "webrtc/modules/interface/module_common_types.h"
 #include "webrtc/modules/rtp_rtcp/interface/rtp_rtcp.h"

webrtc/modules/video_coding/main/test/test_macros.h

@@ -11,8 +11,8 @@
 #ifndef VCM_TEST_MACROS_H
 #define VCM_TEST_MACROS_H
 
-#include <cstdio>
-#include <cstdlib>
+#include <stdio.h>
+#include <stdlib.h>
 
 extern int vcmMacrosTests;
 extern int vcmMacrosErrors;

webrtc/modules/video_coding/main/test/test_util.cc

@@ -10,8 +10,9 @@
 
 #include "webrtc/modules/video_coding/main/test/test_util.h"
 
-#include <cassert>
-#include <cmath>
+#include <assert.h>
+#include <math.h>
+
 #include <iomanip>
 #include <sstream>
 

webrtc/modules/video_coding/main/test/vcm_payload_sink_factory.cc

@@ -10,8 +10,9 @@
 
 #include "webrtc/modules/video_coding/main/test/vcm_payload_sink_factory.h"
 
+#include <assert.h>
+
 #include <algorithm>
-#include <cassert>
 
 #include "webrtc/modules/rtp_rtcp/interface/rtp_rtcp.h"
 #include "webrtc/modules/video_coding/main/test/test_util.h"

webrtc/modules/video_coding/main/test/video_rtp_play_mt.cc

@@ -8,7 +8,7 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include <cassert>
+#include <assert.h>
 
 #include "webrtc/modules/video_coding/main/test/receiver_tests.h"
 #include "webrtc/modules/video_coding/main/test/vcm_payload_sink_factory.h"

webrtc/modules/video_coding/main/test/video_source.cc

@@ -10,7 +10,7 @@
 
 #include "webrtc/modules/video_coding/main/test/video_source.h"
 
-#include <cassert>
+#include <assert.h>
 
 #include "webrtc/test/testsupport/fileutils.h"