Various enhancement

.distfile

@@ -0,0 +1,9 @@
+.distfile
+LICENSE
+Makefile
+plot.gp
+plot3d.gp
+sadrand.c
+README
+runplot.sh
+runplot3d.sh

Makefile

@@ -1,6 +1,9 @@
 CC=gcc
-CFLAGS=-Wall
+CFLAGS=-Wall -O3
+CLFAGS-DBG=$(CFLAGS) -g
 LDFLAGS=-lm
+LDFLAGS-DBG=$(LDFLAGS) -g
+LDFLAGS+= -s
 
 all: sadrand
 
@@ -11,13 +14,22 @@ sadrand.o: sadrand.c
 	$(CC) $(CFLAGS) -c -o $@ $<
 
 sadrand-dbg: sadrand-dbg.o
-	$(CC) -g -o $@ $< $(LDFLAGS)
+	$(CC) -o $@ $< $(LDFLAGS-DBG)
 
 sadrand-dbg.o: sadrand.c
-	$(CC) -g $(CFLAGS) -c -o $@ $<
+	$(CC) $(CFLAGS-DBG) -c -o $@ $<
 
+pkg: sadrand.tar.gz
+sadrand.tar.gz: TMP=$(shell mktemp)
+sadrand.tar.gz: dist .distfile sadrand.c Makefile
+	tar -C .. \
+		-acvf '$(TMP)' $(shell cat .distfile | sed "s#^#$(shell basename `pwd`)/#" )
+	mv -v '$(TMP)' '$@'
 
-.PHONY: clean
+.PHONY: clean dist
 
 clean:
 	-rm *.o
+
+dist: clean
+	-rm sadrand sadrand-dbg sadrand.tar.gz

README

@@ -0,0 +1,24 @@
+sadrand
+=======
+
+Compare distribution of three random integer algorithm from random bytes.
+
+Building
+	make
+Running
+	./sadrand
+
+Getting help
+	./sadrand -h
+
+Plots
+-----
+
+Get a 2d plot
+	./runplot.sh
+
+Get a 3d plot
+	./runplot3d.sh
+
+Getting help
+	./runplot3d.sh

runplot3d.sh

@@ -10,6 +10,12 @@ then
     exit 1
 fi
 
+if [ "$1" =  "-h" -o "$1" = "--help" ]
+then
+	usage
+	exit 0
+fi
+
 maxres=${1:-100}
 minres=${2:-2}
 iter=${3:-10000}

sadrand.c

@@ -22,15 +22,17 @@ static struct option long_opts[] = {
 	{"iter", required_argument, 0, 'i'},
 	{"resolution", required_argument, 0, 'r'},
 	{"relative", no_argument, 0, 'R'},
+	{"help", no_argument, 0, 'h'},
 	{0, 0, 0, 0}
 };
 
 void usage(const char name[])
 {
-	dprintf(2, "Usage %s [-i ITER] [-r RESOLUTION] [-R]\n", name);
-	dprintf(2, "\t-i, --iter       Iteration count\n");
-	dprintf(2, "\t-r, --resolution Number of dice faces\n");
-	dprintf(2, "\t-R, --relative   Output relative count instead of absolute\n");
+	dprintf(2, "Usage %s [-i ITER] [-r RESOLUTION] [-R]\n\
+\t-i, --iter       Iteration count\n\
+\t-r, --resolution Number of dice faces\n\
+\t-R, --relative   Output relative count instead of absolute\n\
+\t-h, --help       Display this help and exit\n", name);
 }
 
 void rand_ctx_init(struct rand_ctx *ctx)
@@ -200,6 +202,8 @@ int main(int argc, char *argv[]) {
 	unsigned int *results[NTEST];
 
 	relative = 0;
+	iterations = 0x1000;
+	resolution = 100;
 
 	while (1)
 	{
@@ -207,7 +211,7 @@ int main(int argc, char *argv[]) {
 		int option_index = 0;
 		char *arg_endp;
 
-		c = getopt_long(argc, argv, "i:r:R",
+		c = getopt_long(argc, argv, "i:r:Rh",
 			long_opts, &option_index);
 		if(c == -1) { break; }
 		switch(c) 
@@ -256,6 +260,9 @@ int main(int argc, char *argv[]) {
 		case 'R':
 			relative = 1;
 			break;
+		case 'h':
+			usage(argv[0]);
+			exit(0);
 		case '?':
 			break;
 		}