Changes in libcfa/src/stdlib.cfa [5d1ebb9:aa8e24c3]

File:

• libcfa/src/stdlib.cfa (modified) (2 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 : Thu Jan 13 21:38:30 2022
-// Update Count     : 593
+// Last Modified On : Wed Dec 29 15:32:44 2021
+// Update Count     : 512
 //
 
 #include "stdlib.hfa"
-#include "bits/random.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
 
-uint32_t __global_random_seed;                                                  // sequential/concurrent
-uint32_t __global_random_state;                                         // sequential only
-
-void set_seed( PRNG & prng, uint32_t seed_ ) with( prng ) { state = seed = seed_; GENERATOR( state ); } // set seed
+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;
+        state ^= state << 7;
+        return state;
+} // MarsagliaXor
+
+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 = 36973 * (state & 65535) + (state >> 16);
+} // LCG
+
 uint32_t prng( PRNG & prng ) with( prng ) { callcnt += 1; return GENERATOR( state ); }
 
-void set_seed( uint32_t seed ) { __global_random_seed = seed; GENERATOR( __global_random_state ); }
-uint32_t get_seed() { return __global_random_seed; }
-uint32_t prng( void ) { return GENERATOR( __global_random_state ); } // [0,UINT_MAX]
+uint32_t prng( void ) { return GENERATOR( state ); }
 
 //---------------------------------------