1 files changed, 47 insertions, 0 deletions
diff --git a/src/uint32p.c b/src/uint32p.c
new file mode 100644
index 0000000..94327de
--- /dev/null
+++ b/src/uint32p.c
@@ -0,0 +1,47 @@
+#include "uint_t.h"
+
+/**
+  * @file uint32p.c
+  * @author djb
+  * @ref qmail
+  * @brief packing/unpacking 32 bit integer to/from char string
+  */
+
+void uint32_pack(char s[4],uint32 u) 
+{
+  s[0] = u & 255; u >>= 8;
+  s[1] = u & 255; u >>= 8;
+  s[2] = u & 255;
+  s[3] = u >> 8;
+}
+void uint32_pack_big(char s[4],uint32 u)
+{
+  s[3] = u & 255; u >>= 8;
+  s[2] = u & 255; u >>= 8;
+  s[1] = u & 255;
+  s[0] = u >> 8;
+}
+
+void uint32_unpack(char s[4],uint32 *u)
+{
+  uint32 result;
+
+  result =  (unsigned char) s[3]; result <<= 8;
+  result += (unsigned char) s[2]; result <<= 8;
+  result += (unsigned char) s[1]; result <<= 8;
+  result += (unsigned char) s[0];
+
+  *u = result;
+}
+
+void uint32_unpack_big(char s[4],uint32 *u)
+{
+  uint32 result;
+
+  result =  (unsigned char) s[0]; result <<= 8;
+  result += (unsigned char) s[1]; result <<= 8;
+  result += (unsigned char) s[2]; result <<= 8;
+  result += (unsigned char) s[3];
+
+  *u = result;
+}