Changeset 407e251 in mainline

Timestamp:

2024-06-12T20:50:42Z (3 weeks ago)

Author:

Miroslav Cimerman <mc@…>

Children:

d85d4f2

Parents:

c4ed9fa

Message:

Add option for 16-bit random number generation

Location:

uspace/lib/c

Files:

• generic/rndgen.c (modified) (1 diff)
• include/rndgen.h (modified) (1 diff)

uspace/lib/c/generic/rndgen.c

@@ -92 +92 @@
 }
 
+/** Generate random 16-bit integer.
+ *
+ * @param rndgen Random number generator
+ * @param rw Place to store random 16-bit integer
+ * @return EOK on success or error code
+ */
+errno_t rndgen_uint16(rndgen_t *rndgen, uint16_t *rw)
+{
+        int i;
+        uint8_t b;
+        uint16_t w;
+        errno_t rc;
+
+        w = 0;
+        for (i = 0; i < 2; i++) {
+                rc = rndgen_uint8(rndgen, &b);
+                if (rc != EOK)
+                        return rc;
+
+                w = (w << 8) | b;
+        }
+
+        *rw = w;
+        return EOK;
+}
+
 /** Generate random 32-bit integer.
  *

uspace/lib/c/include/rndgen.h

@@ -47 +47 @@
 extern void rndgen_destroy(rndgen_t *);
 extern errno_t rndgen_uint8(rndgen_t *, uint8_t *);
+extern errno_t rndgen_uint16(rndgen_t *, uint16_t *);
 extern errno_t rndgen_uint32(rndgen_t *, uint32_t *);