X-Git-Url: https://git.auder.net/?a=blobdiff_plain;f=code%2Fstage1%2Fsrc%2FUtil%2Futils.c;h=efd4dd2fe8d08f335574aa44e5ce018fc1fc4cc6;hb=ebf1280e432d51f47238ce8df86750ba3a7d6d1f;hp=9713e30ef3f00727a9f9f7bb6b3f3b824f52ae2e;hpb=aa7daeaacfda268c392adf1c5efbccea77be9fe0;p=epclust.git

diff --git a/code/stage1/src/Util/utils.c b/code/stage1/src/Util/utils.c
index 9713e30..efd4dd2 100644
--- a/code/stage1/src/Util/utils.c
+++ b/code/stage1/src/Util/utils.c
@@ -58,24 +58,45 @@ char readReal(FILE* stream, Real* real)
 }
 
 // convert n-bytes binary integers to uint32_t
-uint32_t bInt_to_uint(Byte* pInteger, size_t bytesCount)
+uint32_t bInt_to_uint(Byte* pInteger)
 {
-	uint32_t integer = 0;
-	for (size_t i = 0; i < bytesCount; i++)
-		integer += ((uint32_t) (pInteger[i])) << (i << 3);
-	return integer;
+	uint32_t res;
+	memcpy(&res, pInteger, 4);
+	return res;
 }
 
-// serialize integers with a portable bytes order
-void write_int(uint32_t integer, size_t bytesCount, Byte* buffer)
+// serialize integers
+void write_int(uint32_t x, Byte* buffer)
 {
-	Byte chunk;
-	// write from left to right, from least to most significative bit
-	for (size_t i = 0; i < bytesCount; i++)
-	{
-		chunk = (integer >> (i << 3)) & 0xFF;
-		buffer[i] = chunk;
-	}
+	union {
+		uint32_t i;
+		char bytes[4];
+	} u;
+	u.i = x;
+	for (size_t i = 0; i < 4; i++)
+		buffer[i] = u.bytes[i];
+}
+
+//WARNING: assuming float is 32bits...
+// convert 4-bytes binary float to float
+float bReal_to_double(Byte* pFloat)
+{
+	float res;
+	memcpy(&res, pFloat, 4);
+	return res;
+}
+
+//WARNING: assuming float is 32bits...
+// serialize double with a NON-portable bytes order
+void write_real(float x, Byte* buffer)
+{
+	union {
+		float d;
+		char bytes[4];
+	} u;
+	u.d = x;
+	for (size_t i = 0; i < 4; i++)
+		buffer[i] = u.bytes[i];
 }
 
 // Expected size of a Work message in bytes: