Merge pull request #585 from boostorg/reduce_dec_float_truncation

codecov.yml

@@ -0,0 +1,32 @@
+codecov:
+  require_ci_to_pass: yes
+
+coverage:
+  precision: 1
+  round: up
+  range: '50...100'
+  status:
+    project:
+      default: # This can be anything, but it needs to exist as the name
+        # basic settings
+        target: 75%
+        threshold: 10%
+        if_ci_failed: error #success, failure, error, ignore
+        only_pulls: false
+    patch:
+      default:
+        target: 75%
+        threshold: 25%
+
+parsers:
+  gcov:
+    branch_detection:
+      conditional: no
+      loop: no
+      method: no
+      macro: no
+
+comment:
+  layout: 'reach,diff,flags,files,footer'
+  behavior: default
+  require_changes: no

include/boost/multiprecision/cpp_dec_float.hpp

@@ -635,8 +635,8 @@ class cpp_dec_float
       }
       else
       {
-         std::copy(result.cbegin() + 1,
-                   result.cbegin() + (std::min)(static_cast<std::int32_t>(prec_elems_for_multiply + 1), cpp_dec_float_elem_number),
+         std::copy(result.cbegin() + static_cast<std::ptrdiff_t>(1),
+                   result.cbegin() + static_cast<std::ptrdiff_t>(1 + (std::min)(prec_elems_for_multiply, cpp_dec_float_elem_number)),
                    data.begin());
       }
    }
@@ -673,8 +673,8 @@ class cpp_dec_float
          }
          else
          {
-            std::copy(result.cbegin() + 1,
-                      result.cbegin() + (std::min)(static_cast<std::int32_t>(prec_elems_for_multiply + 1), cpp_dec_float_elem_number),
+            std::copy(result.cbegin() + static_cast<std::ptrdiff_t>(1),
+                      result.cbegin() + static_cast<std::ptrdiff_t>(1 + (std::min)(prec_elems_for_multiply, cpp_dec_float_elem_number)),
                       data.begin());
          }
       }
@@ -719,8 +719,8 @@ class cpp_dec_float
          }
          else
          {
-            std::copy(result + 1,
-                      result + (std::min)(static_cast<std::int32_t>(prec_elems_for_multiply + 1), cpp_dec_float_elem_number),
+            std::copy(result + static_cast<std::ptrdiff_t>(1),
+                      result + static_cast<std::ptrdiff_t>(1 + (std::min)(prec_elems_for_multiply, cpp_dec_float_elem_number)),
                       data.begin());
          }
       }