ntohl etc.

2 files changed, 26 insertions, 0 deletions

diff --git a/src/library.js b/src/library.js
index 5a429131..355a0c61 100644
--- a/src/library.js
+++ b/src/library.js
@@ -5715,6 +5715,20 @@ LibraryManager.library = {
   },
 
   // ==========================================================================
+  // arpa/inet.h
+  // ==========================================================================
+
+  htonl: function(value) {
+    return ((value & 0xff) << 24) + ((value & 0xff00) << 8) +
+           ((value & 0xff0000) >> 8) + ((value & 0xff000000) >> 24);
+  },
+  htons: function(value) {
+    return ((value & 0xff) << 8) + ((value & 0xff00) >> 8);
+  },
+  ntohl: 'htonl',
+  ntohs: 'htons',
+
+  // ==========================================================================
   // emscripten.h
   // ==========================================================================
 
diff --git a/tests/runner.py b/tests/runner.py
index 126071a0..68ad6361 100755
--- a/tests/runner.py
+++ b/tests/runner.py
@@ -3837,6 +3837,18 @@ def process(filename):
       '''
       self.do_run(src, re.sub('(^|\n)\s+', '\\1', expected))
 
+    def test_inet(self):
+      src = r'''
+        #include <stdio.h>
+        #include <arpa/inet.h>
+
+        int main() {
+          printf("*%x,%x,%x,%x*\n", htonl(0x12345678), htons(0xabcd), ntohl(0x43211234), ntohs(0xbeaf));
+          return 0;
+        }
+      '''
+      self.do_run(src, '*78563412,cdab,34122143,afbe*')
+
     def test_ctype(self):
       # The bit fiddling done by the macros using __ctype_b_loc requires this.
       Settings.CORRECT_SIGNS = 1