Changes in libcfa/src/stdlib.cfa [2210cfc:15b05c8]

File:

• libcfa/src/stdlib.cfa (modified) (3 diffs)

libcfa/src/stdlib.cfa

@@ -10 +10 @@
 // Created On       : Thu Jan 28 17:10:29 2016
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Mon Jan 10 17:07:21 2022
-// Update Count     : 572
+// Last Modified On : Mon Jan  3 09:36:27 2022
+// Update Count     : 519
 //
 
 #include "stdlib.hfa"
-//#include "concurrency/kernel/fwd.hfa"
-#include "concurrency/invoke.h"                                                 // random_state
 
 //---------------------------------------
@@ -223 +221 @@
 //---------------------------------------
 
+static uint32_t seed = 0;                                                               // current seed
+static thread_local uint32_t state;                                             // random state
+
+void set_seed( uint32_t seed_ ) { state = seed = seed_; }
+uint32_t get_seed() { return seed; }
+
 #define GENERATOR LCG
 
 inline uint32_t MarsagliaXor( uint32_t & state ) {
+        if ( unlikely( seed == 0 ) ) set_seed( rdtscl() );
+        else if ( unlikely( state == 0 ) ) state = seed;
         state ^= state << 6;
         state ^= state >> 21;
@@ -233 +239 @@
 
 inline uint32_t LCG( uint32_t & state ) {                               // linear congruential generator
+        if ( unlikely( seed == 0 ) ) set_seed( rdtscl() );
+        else if ( unlikely( state == 0 ) ) state = seed;
         return state = 36969 * (state & 65535) + (state >> 16); // 36969 is NOT prime!
 } // LCG
 
-uint32_t __thread_seed = rdtscl();                                              // global thread seed
-
-void set_seed( uint32_t seed ) { __thread_seed = seed; }
-uint32_t get_seed() { return  __thread_seed; }
 uint32_t prng( PRNG & prng ) with( prng ) { callcnt += 1; return GENERATOR( state ); }
 
-uint32_t prng( void ) { return GENERATOR( __thread_seed ); } // [0,UINT_MAX]
+uint32_t prng( void ) { return GENERATOR( state ); }
 
 //---------------------------------------