ammend RNG note

Author: pachadotdev

docs/last-updated.json

@@ -1,3 +1,3 @@
 {
-  "last_updated": "Last updated: 2025-11-29 20:43:17"
+  "last_updated": "Last updated: 2025-11-30 09:25:47"
 }

docs/search.json

@@ -260,9 +260,6 @@ <h2>Are all values in a vector ‘true’?</h2>
   all2_cpp_3(x &gt; 2)
 )</code></pre>
 </div>
-<div id="references" class="section level2">
-<h2>References</h2>
-</div>
 
 
 

docs/vignettes/08-logical-functions-2.html

@@ -286,9 +286,6 @@ <h2>Cumulative maximum</h2>
   cummax_cpp(x)
 )</code></pre>
 </div>
-<div id="references" class="section level2">
-<h2>References</h2>
-</div>
 
 
 

docs/vignettes/09-rolling-functions-2.html

@@ -249,9 +249,6 @@ <h2>Root Mean Square Error (RMSE)</h2>
   rmse2_cpp(x, 0, na_rm = TRUE)
 )</code></pre>
 </div>
-<div id="references" class="section level2">
-<h2>References</h2>
-</div>
 
 
 

docs/vignettes/10-statistical-functions-2.html

@@ -97,9 +97,6 @@ <h1></h1>
 return ptr;</code></pre>
 <p>Similarly, the <code>Rcpp</code> version checks the engine with:</p>
 <pre class="r"><code>stopifnot(inherits(engine, "tesseract"))</code></pre>
-<div id="references" class="section level2">
-<h2>References</h2>
-</div>
 
 
 

docs/vignettes/12-external-pointers.html

@@ -193,9 +193,6 @@ <h2>Anticonf scripts</h2>
 optimization level used by R. It also serves the goal of testing that a
 simple file can be compiled.</p>
 </div>
-<div id="references" class="section level2">
-<h2>References</h2>
-</div>
 
 
 

docs/vignettes/13-compiler-optimization.html

@@ -692,6 +692,26 @@ <h2>How do I modify a matrix rownames/colnames on C++ side?</h2>
   return out;
 }</code></pre>
 </div>
+<div id="how-do-i-use-the-same-seed-defined-in-r-for-random-number-generation-in-c" class="section level2">
+<h2>How do I use the same seed defined in R for random number generation
+in C++?</h2>
+<p>If you use <code>set.seed(42)</code> (or any other value) in R, you
+need to explicitly use <code>GetRNGstate()</code> and
+<code>PutRNGstate()</code> in your C++ code to synchronize the RNG state
+between R and C++. Otherwise, the result will not be replicable for not
+correctly using the Random Number Generator (RNG) state from R.</p>
+<pre class="cpp"><code>#include "cpp4r/doubles.hpp"
+#include "R.h"
+#include "Rmath.h"
+
+// single draw from standard normal using R's RNG (replicable result)
+[[cpp4r::register]] double using_rng_() {
+  GetRNGstate();
+  double x = Rf_rnorm(0, 1);
+  PutRNGstate();
+  return x;
+}</code></pre>
+</div>