Minor optimisation for MHD_YES/MHD_NO comparison

Comparing against MHD_NO (binary zero) is more efficient

5 files changed, 22 insertions, 22 deletions

diff --git a/src/microhttpd/basicauth.c b/src/microhttpd/basicauth.c
index d9532d4a..d39019f5 100644
--- a/src/microhttpd/basicauth.c
+++ b/src/microhttpd/basicauth.c
@@ -151,7 +151,7 @@ MHD_queue_basic_auth_fail_response (struct MHD_Connection *connection,
     ret = MHD_NO;
 
   free (header);
-  if (MHD_YES == ret)
+  if (MHD_NO != ret)
   {
     ret = MHD_queue_response (connection,
                               MHD_HTTP_UNAUTHORIZED,
diff --git a/src/microhttpd/connection.c b/src/microhttpd/connection.c
index 02497cc6..f9f15cec 100644
--- a/src/microhttpd/connection.c
+++ b/src/microhttpd/connection.c
@@ -259,7 +259,7 @@ MHD_get_connection_values (struct MHD_Connection *connection,
     {
       ret++;
       if ( (NULL != iterator) &&
-           (MHD_YES != iterator (iterator_cls,
+           (MHD_NO == iterator (iterator_cls,
                                  pos->kind,
                                  pos->header,
                                  pos->value)) )
@@ -1333,7 +1333,7 @@ build_header_response (struct MHD_Connection *connection)
          close the connection */
       /* 'close' header doesn't exist yet, see if we need to add one;
          if the client asked for a close, no need to start chunk'ing */
-      if ( (MHD_YES == keepalive_possible (connection)) &&
+      if ( (MHD_NO != keepalive_possible (connection)) &&
            (MHD_str_equal_caseless_ (MHD_HTTP_VERSION_1_1,
                                      connection->version) ) )
       {
@@ -1430,7 +1430,7 @@ build_header_response (struct MHD_Connection *connection)
 #ifdef UPGRADE_SUPPORT
          (NULL == response->upgrade_handler) &&
 #endif /* UPGRADE_SUPPORT */
-         (MHD_YES == keepalive_possible (connection)) )
+         (MHD_NO != keepalive_possible (connection)) )
       must_add_keep_alive = true;
     break;
   case MHD_CONNECTION_BODY_SENT:
@@ -1631,7 +1631,7 @@ transmit_error_response (struct MHD_Connection *connection,
                              status_code,
                              response);
   MHD_destroy_response (response);
-  if (MHD_YES != iret)
+  if (MHD_NO == iret)
   {
     /* can't even send a reply, at least close the connection */
     CONNECTION_CLOSE_ERROR (connection,
@@ -2426,7 +2426,7 @@ process_request_body (struct MHD_Connection *connection)
     if (MHD_SIZE_UNKNOWN != connection->remaining_upload_size)
       connection->remaining_upload_size -= processed_size;
   }
-  while (MHD_YES == instant_retry);
+  while (MHD_NO != instant_retry);
   if ( (available > 0) &&
        (buffer_head != connection->read_buffer) )
     memmove (connection->read_buffer,
@@ -2666,7 +2666,7 @@ parse_connection_headers (struct MHD_Connection *connection)
                                MHD_HTTP_BAD_REQUEST,
                                response);
     MHD_destroy_response (response);
-    if (MHD_YES != iret)
+    if (MHD_NO == iret)
     {
       /* can't even send a reply, at least close the connection */
       CONNECTION_CLOSE_ERROR (connection,
@@ -3012,7 +3012,7 @@ MHD_connection_handle_write (struct MHD_Connection *connection)
       if (NULL != response->crc)
         MHD_mutex_lock_chk_ (&response->mutex);
 #endif
-      if (MHD_YES != try_ready_normal_body (connection))
+      if (MHD_NO == try_ready_normal_body (connection))
       {
         /* mutex was already unlocked by try_ready_normal_body */
         return;
@@ -3494,7 +3494,7 @@ MHD_connection_handle_idle (struct MHD_Connection *connection)
       {
         connection->state = MHD_CONNECTION_UPGRADE;
         /* This connection is "upgraded".  Pass socket to application. */
-        if (MHD_YES !=
+        if (MHD_NO ==
             MHD_response_execute_upgrade_ (connection->response,
                                            connection))
         {
@@ -3536,7 +3536,7 @@ MHD_connection_handle_idle (struct MHD_Connection *connection)
         connection->state = MHD_CONNECTION_BODY_SENT;
         continue;
       }
-      if (MHD_YES == try_ready_normal_body (connection))
+      if (MHD_NO != try_ready_normal_body (connection))
       {
 #if defined(MHD_USE_POSIX_THREADS) || defined(MHD_USE_W32_THREADS)
         if (NULL != connection->response->crc)
@@ -3569,7 +3569,7 @@ MHD_connection_handle_idle (struct MHD_Connection *connection)
         connection->state = MHD_CONNECTION_BODY_SENT;
         continue;
       }
-      if (MHD_YES == try_ready_chunked_body (connection))
+      if (MHD_NO != try_ready_chunked_body (connection))
       {
 #if defined(MHD_USE_POSIX_THREADS) || defined(MHD_USE_W32_THREADS)
         if (NULL != connection->response->crc)
diff --git a/src/microhttpd/digestauth.c b/src/microhttpd/digestauth.c
index d8d3b4ea..c3260d1b 100644
--- a/src/microhttpd/digestauth.c
+++ b/src/microhttpd/digestauth.c
@@ -814,7 +814,7 @@ check_argument_match (struct MHD_Connection *connection,
                               &test_header,
                               &num_headers);
   free (argb);
-  if (MHD_YES != ret)
+  if (MHD_NO == ret)
   {
     return MHD_NO;
   }
@@ -1025,7 +1025,7 @@ digest_auth_check_all (struct MHD_Connection *connection,
    * Checking if that combination of nonce and nc is sound
    * and not a replay attack attempt. Also adds the nonce
    * to the nonce-nc map if it does not exist there.
-   */if (MHD_YES !=
+   */if (MHD_NO ==
       check_nonce_nc (connection,
                       nonce,
                       nci))
@@ -1114,7 +1114,7 @@ digest_auth_check_all (struct MHD_Connection *connection,
         args = "";
       else
         args++;
-      if (MHD_YES !=
+      if (MHD_NO ==
           check_argument_match (connection,
                                 args) )
       {
@@ -1363,7 +1363,7 @@ MHD_queue_auth_fail_response2 (struct MHD_Connection *connection,
                      realm,
                      &da,
                      nonce);
-    if (MHD_YES !=
+    if (MHD_NO ==
         check_nonce_nc (connection,
                         nonce,
                         0))
@@ -1417,7 +1417,7 @@ MHD_queue_auth_fail_response2 (struct MHD_Connection *connection,
       else
         ret = MHD_NO;
 #if 0
-      if ( (MHD_YES == ret) && (AND in state : 100 continue aborting ...))
+      if ( (MHD_NO != ret) && (AND in state : 100 continue aborting ...))
         ret = MHD_add_response_header (response,
                                        MHD_HTTP_HEADER_CONNECTION,
                                        "close");
@@ -1428,7 +1428,7 @@ MHD_queue_auth_fail_response2 (struct MHD_Connection *connection,
       ret = MHD_NO;
   }
 
-  if (MHD_YES == ret)
+  if (MHD_NO != ret)
   {
     ret = MHD_queue_response (connection,
                               MHD_HTTP_UNAUTHORIZED,
diff --git a/src/microhttpd/internal.c b/src/microhttpd/internal.c
index ba601fa0..33542c4a 100644
--- a/src/microhttpd/internal.c
+++ b/src/microhttpd/internal.c
@@ -213,7 +213,7 @@ MHD_parse_arguments_ (struct MHD_Connection *connection,
         key_len = daemon->unescape_callback (daemon->unescape_callback_cls,
                                              connection,
                                              args);
-        if (MHD_YES != cb (connection,
+        if (MHD_NO == cb (connection,
                            args,
                            key_len,
                            NULL,
@@ -234,7 +234,7 @@ MHD_parse_arguments_ (struct MHD_Connection *connection,
       value_len = daemon->unescape_callback (daemon->unescape_callback_cls,
                                              connection,
                                              equals);
-      if (MHD_YES != cb (connection,
+      if (MHD_NO == cb (connection,
                          args,
                          key_len,
                          equals,
@@ -255,7 +255,7 @@ MHD_parse_arguments_ (struct MHD_Connection *connection,
       key_len = daemon->unescape_callback (daemon->unescape_callback_cls,
                                            connection,
                                            args);
-      if (MHD_YES != cb (connection,
+      if (MHD_NO == cb (connection,
                          args,
                          key_len,
                          NULL,
@@ -279,7 +279,7 @@ MHD_parse_arguments_ (struct MHD_Connection *connection,
     value_len = daemon->unescape_callback (daemon->unescape_callback_cls,
                                            connection,
                                            equals);
-    if (MHD_YES != cb (connection,
+    if (MHD_NO == cb (connection,
                        args,
                        key_len,
                        equals,
diff --git a/src/microhttpd/response.c b/src/microhttpd/response.c
index 27b3ee3f..141372b9 100644
--- a/src/microhttpd/response.c
+++ b/src/microhttpd/response.c
@@ -262,7 +262,7 @@ MHD_get_response_headers (struct MHD_Response *response,
   {
     numHeaders++;
     if ((NULL != iterator) &&
-        (MHD_YES != iterator (iterator_cls,
+        (MHD_NO == iterator (iterator_cls,
                               pos->kind,
                               pos->header,
                               pos->value)))