Changeset d2ad151 for libcfa/src/bits/random.hfa

Timestamp:

Nov 20, 2022, 10:24:14 PM (18 months ago)

Author:

Peter A. Buhr <pabuhr@…>

Branches:

ADT, ast-experimental, master

Children:

910e1d0

Parents:

25b0fde

Message:

major update of PRNG

File:

• libcfa/src/bits/random.hfa (modified) (4 diffs)

libcfa/src/bits/random.hfa

@@ -10 +10 @@
 // Created On       : Fri Jan 14 07:18:11 2022
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Fri Jan 14 07:18:58 2022
-// Update Count     : 1
+// Last Modified On : Sat Nov 19 17:47:43 2022
+// Update Count     : 8
 // 
 
@@ -18 +18 @@
 #include <stdint.h>
 
+#ifdef __x86_64__                                                                               // 64-bit architecture
+#define LEHMER64
+#else                                                                                                   // 32-bit architecture
+#define XORSHIFT_6_21_7
+#endif // __x86_64__
+
 // Pipelined to allow out-of-order overlap with reduced dependencies. Critically, the current random state is returned
 // (copied), and then compute and store the next random value.
@@ -23 +29 @@
 #if defined(__SIZEOF_INT128__)
 //--------------------------------------------------
+        #ifdef LEHMER64
+        #define PRNG_ARG_T __uint128_t
+        #define PRNG_NAME lehmer64
+        #endif // LEHMER64
+
         static inline uint64_t lehmer64( __uint128_t & state ) {
                 __uint128_t ret = state;
@@ -51 +62 @@
 
 //--------------------------------------------------
+
+#ifdef XORSHIFT_6_21_7
+#define PRNG_ARG_T uint32_t
+#define PRNG_NAME xorshift_6_21_7
+#endif // XORSHIFT_6_21_7
+
 static inline uint32_t xorshift_6_21_7( uint32_t & state ) {
         uint32_t ret = state;