first commit

Utils.c

@@ -0,0 +1,102 @@
+#define _BSD_SOURCE 1
+#include <stdlib.h>
+#include <stdio.h>
+
+#include "Utils.h"
+
+inline void 
+printbin32(	const unsigned long ulVal,
+			const unsigned char bGroupByBytes)
+{
+	for(unsigned long idxBit = 1<<31;idxBit>0;idxBit>>=1)
+	{
+		if(bGroupByBytes)
+			switch(idxBit)
+			{
+				case 1<<23:
+				case 1<<15:
+				case 1<<7:
+					putchar(' ');
+			}
+		putchar(ulVal & idxBit ? '1' : '0');
+	}
+} 
+
+inline unsigned char
+count_bit32(const unsigned long ulVal)
+{
+	unsigned char cpt = 0;
+	for(unsigned long idxBit = 1<<31;idxBit>0;idxBit>>=1)
+		if(ulVal & idxBit)
+			cpt++;
+	return cpt;
+}
+
+inline unsigned char
+count_bit8(const unsigned char ulVal)
+{
+	unsigned char cpt = 0;
+	for(unsigned char idxBit = 1<<7;idxBit>0;idxBit>>=1)
+		if(ulVal & idxBit)
+			cpt++;
+	return cpt;
+}
+
+inline void 
+printbin32Info(	const unsigned long ulVal,
+				const unsigned short uhb,
+				const unsigned short ulb)
+{
+	printbin32(ulVal,1);
+	putchar('\n');
+	printf("%02d....%02d %02d....%02d %02d....%02d %02d....%02d\n",
+			uhb,
+			3*(uhb+ulb+1)/4, 3*((uhb+ulb+1)/4)-1,
+			(uhb+ulb+1)/2, ((uhb+ulb+1)/2)-1,
+			(uhb+ulb+1)/4, ((uhb+ulb+1)/4)-1,
+			ulb);
+}
+
+unsigned long get_notnull_random()
+{
+	unsigned long val;
+	do
+		val = random()<<1 ^ random();
+	while(!val);
+	return val;
+}
+
+unsigned long get_notnull_random_balanced()
+{
+	unsigned long val;
+	do
+		val = random()<<1 ^ random();
+	while(count_bit32(val) != 16);
+	return val;
+}
+ 
+
+unsigned char get_notnull8_random_balanced()
+{
+	unsigned char val;
+	static unsigned char prev = 0;
+	do
+		val = random()<<1 ^ random();
+	while((count_bit8(val) != 4) || (val == prev));
+	prev = val;
+	return val;
+}
+
+unsigned long get_notnull_random_balanced_mByte()
+{
+	unsigned long val;
+	static unsigned long prev = 0;
+	do
+		val = 	  (get_notnull8_random_balanced() << 24)
+				| (get_notnull8_random_balanced() << 16)
+				| (get_notnull8_random_balanced() << 8)
+				| (get_notnull8_random_balanced() << 0);
+	while(val == prev);
+	prev = val;
+	return val;
+}