update doc

greg7mdp · Mar 6, 2022 · 002b81e · 002b81e
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Showing 2 changed files with 5 additions and 3 deletions.
diff --git a/docs/hmap.md b/docs/hmap.md
@@ -50,8 +50,8 @@ The full types with template parameters can be found in the [gtl/phmap_fwd_decl.
 
 |  type                 |    memory usage   | additional *peak* memory usage when resizing  |
 |-----------------------|-------------------|-----------------------------------------------|
-| flat tables           | ![flat_mem_usage](https://github.com/greg7mdp/gtl/blob/master/html/img/flat_mem_usage.png?raw=true) | ![flat_peak_usage](https://github.com/greg7mdp/gtl/blob/master/html/img/flat_peak.png?raw=true) |
-| node tables           | ![node_mem_usage](https://github.com/greg7mdp/gtl/blob/master/html/img/node_mem_usage.png?raw=true) | ![node_peak_usage](https://github.com/greg7mdp/gtl/blob/master/html/img/node_peak.png?raw=true) |
+| flat tables           | ![flat_mem_usage](https://github.com/greg7mdp/gtl/blob/main/html/img/flat_mem_usage.png?raw=true) | ![flat_peak_usage](https://github.com/greg7mdp/gtl/blob/main/html/img/flat_peak.png?raw=true) |
+| node tables           | ![node_mem_usage](https://github.com/greg7mdp/gtl/blob/main/html/img/node_mem_usage.png?raw=true) | ![node_peak_usage](https://github.com/greg7mdp/gtl/blob/main/html/img/node_peak.png?raw=true) |
 
 
 - *size()* is the number of values in the container, as returned by the size() method

diff --git a/gtl/bit_vector.hpp b/gtl/bit_vector.hpp
@@ -653,7 +653,7 @@ class view {
         size_t num_bytes = (size() + 7) >> 3;
         size_t start = res.size();
         size_t cur = start + num_bytes * 2;
-        res.resize(cur);
+        res.resize(cur); // resize string as we display bits right to left, lsb is the rightmost
 
         auto to_hex = [](unsigned char b) -> char { return (b > 9) ? 'a' + b - 10 : '0' + b; };
         typename S::bit_sequence seq(_bv.storage(), _first, _last, 0);
@@ -663,6 +663,8 @@ class view {
             for (size_t i=0; i<8; ++i) {
                 if (cur == start)
                     break;
+
+                // lsb is rightmost... populate string from the end
                 unsigned char b = (unsigned char)v;
                 v >>= 8;
                 res[--cur] = to_hex(b & 0xf);