Changeset d856110 in mainline

Timestamp:

2013-07-29T14:27:57Z (11 years ago)

Author:

Maurizio Lombardi <m.lombardi85@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

736b07b, b886b60, bdae198, ed29fe4

Parents:

bf963b9

Message:

add rand() and srand() to the posix library.

Location:

uspace/lib/posix

Files:

• include/posix/stdlib.h (modified) (2 diffs)
• source/stdlib.c (modified) (1 diff)

uspace/lib/posix/include/posix/stdlib.h

@@ -46 +46 @@
         #define NULL  ((void *) 0)
 #endif
+
+#define RAND_MAX  714025
 
 /* Process Termination */
@@ -122 +124 @@
 extern int __POSIX_DEF__(mkstemp)(char *tmpl);
 
+/* Pseudo-random number generator */
+extern int __POSIX_DEF__(rand)(void);
+extern void __POSIX_DEF__(srand)(unsigned int seed);
+
 /* Legacy Declarations */
 extern char *__POSIX_DEF__(mktemp)(char *tmpl);

uspace/lib/posix/source/stdlib.c

@@ -394 +394 @@
 
 /**
+ * Generate a pseudo random integer in the range 0 to RAND_MAX inclusive.
+ *
+ * @return The pseudo random integer.
+ */
+int posix_rand(void)
+{
+        return (int) random();
+}
+
+/**
+ * Initialize a new sequence of pseudo-random integers.
+ *
+ * @param seed The seed of the new sequence.
+ */
+void posix_srand(unsigned int seed)
+{
+        srandom(seed);
+}
+
+/**
  * Creates and opens an unique temporary file from template.
  *