Add a sample program

ent.c

@@ -14,7 +14,7 @@ ent_getentropy(void* buf, size_t len)
 {
   int     fd;
   ssize_t ret;
-  char*   cuf;
+  char*   cuf = buf;
 
   assert(len <= 256);
   if (-1 == (fd = open("/dev/urandom", O_RDONLY))) {

meson.build

@@ -23,3 +23,7 @@ pkg_mod.generate(libraries : libent,
                  name : 'libent',
                  filebase : 'ent',
                  description : 'A library to get entropy.')
+
+ent_sample = executable('sample',
+                        ['sample.c'],
+                        dependencies : [ent_dep])

sample.c

@@ -0,0 +1,22 @@
+#include <stdio.h>
+#include <string.h>
+
+#include <ent/ent.h>
+
+
+int
+main()
+{
+	char buf[256];
+	int  i;
+
+	memset(buf, 0, sizeof(buf));
+	if (0 != ent_getentropy(buf, sizeof(buf))) {
+		perror("getentropy");
+	}
+	for (i = 0; i < sizeof buf; ++i) {
+		printf("%02hhx", buf[i]);
+	}
+	puts("");
+	return 0;
+}