Gave round/unround/truncate all in_place_ variants

src/amount.cc

@@ -464,32 +464,26 @@ amount_t amount_t::inverted() const
   return t;
 }
 
-amount_t amount_t::rounded() const
+void amount_t::in_place_round()
 {
   if (! quantity)
     throw_(amount_error, _("Cannot set rounding for an uninitialized amount"));
   else if (! keep_precision())
-    return *this;
+    return;
 
-  amount_t t(*this);
-  t._dup();
-  t.set_keep_precision(false);
-
-  return t;
+  _dup();
+  set_keep_precision(false);
 }
 
-amount_t amount_t::unrounded() const
+void amount_t::in_place_unround()
 {
   if (! quantity)
     throw_(amount_error, _("Cannot unround an uninitialized amount"));
   else if (keep_precision())
-    return *this;
+    return;
 
-  amount_t t(*this);
-  t._dup();
-  t.set_keep_precision(true);
-
-  return t;
+  _dup();
+  set_keep_precision(true);
 }
 
 void amount_t::in_place_reduce()

src/amount.h

@@ -320,17 +320,32 @@ public:
       default state of an amount, but if one has become unrounded, this
       sets the "keep precision" state back to false.
       @see set_keep_precision */
-  amount_t rounded() const;
+  amount_t rounded() const {
+    amount_t temp(*this);
+    temp.in_place_round();
+    return temp;
+  }
+  void in_place_round();
 
   /** Yields an amount which has lost all of its extra precision, beyond what
       the display precision of the commodity would have printed. */
   amount_t truncated() const {
-    return amount_t(to_string());
+    amount_t temp(*this);
+    temp.in_place_truncate();
+    return temp;
   }
-
+  void in_place_truncate() {
+    *this = amount_t(to_string());
+  }
+    
   /** Yields an amount whose display precision is never truncated, even
       though its commodity normally displays only rounded values. */
-  amount_t unrounded() const;
+  amount_t unrounded() const {
+    amount_t temp(*this);
+    temp.in_place_unround();
+    return temp;
+  }
+  void in_place_unround();
 
   /** reduces a value to its most basic commodity form, for amounts that
       utilize "scaling commodities".  For example, an amount of \c 1h

src/balance.h

@@ -312,24 +312,39 @@ public:
   }
 
   balance_t rounded() const {
+    balance_t temp(*this);
+    temp.in_place_round();
+    return temp;
+  }
+  void in_place_round() {
     balance_t temp;
     foreach (const amounts_map::value_type& pair, amounts)
       temp += pair.second.rounded();
-    return temp;
+    *this = temp;
   }
 
   balance_t truncated() const {
+    balance_t temp(*this);
+    temp.in_place_truncate();
+    return temp;
+  }
+  void in_place_truncate() {
     balance_t temp;
     foreach (const amounts_map::value_type& pair, amounts)
       temp += pair.second.truncated();
-    return temp;
+    *this = temp;
   }
 
   balance_t unrounded() const {
+    balance_t temp(*this);
+    temp.in_place_unround();
+    return temp;
+  }
+  void in_place_unround() {
     balance_t temp;
     foreach (const amounts_map::value_type& pair, amounts)
       temp += pair.second.unrounded();
-    return temp;
+    *this = temp;
   }
 
   balance_t reduced() const {

src/value.cc

@@ -1280,73 +1280,79 @@ value_t value_t::abs() const
   return NULL_VALUE;
 }
 
-value_t value_t::rounded() const
+void value_t::in_place_round()
 {
   switch (type()) {
   case INTEGER:
-    return *this;
+    return;
   case AMOUNT:
-    return as_amount().rounded();
+    as_amount_lval().in_place_round();
+    return;
   case BALANCE:
-    return as_balance().rounded();
+    as_balance_lval().in_place_round();
+    return;
   case SEQUENCE: {
     value_t temp;
     foreach (const value_t& value, as_sequence())
       temp.push_back(value.rounded());
-    return temp;
+    *this = temp;
+    return;
   }
   default:
     break;
   }
 
   throw_(value_error, _("Cannot set rounding for %1") << label());
-  return NULL_VALUE;
 }
 
-value_t value_t::truncated() const
+void value_t::in_place_truncate()
 {
   switch (type()) {
   case INTEGER:
-    return *this;
+    return;
   case AMOUNT:
-    return as_amount().truncated();
+    as_amount_lval().in_place_truncate();
+    return;
   case BALANCE:
-    return as_balance().truncated();
+    as_balance_lval().in_place_truncate();
+    return;
   case SEQUENCE: {
     value_t temp;
     foreach (const value_t& value, as_sequence())
       temp.push_back(value.truncated());
-    return temp;
+    *this = temp;
+    return;
   }
   default:
     break;
   }
 
   throw_(value_error, _("Cannot truncate %1") << label());
-  return NULL_VALUE;
 }
 
-value_t value_t::unrounded() const
+void value_t::in_place_unround()
 {
   switch (type()) {
   case INTEGER:
-    return *this;
+    return;
   case AMOUNT:
-    return as_amount().unrounded();
+    as_amount_lval().unrounded();
+    return;
   case BALANCE:
-    return as_balance().unrounded();
+    as_balance_lval().unrounded();
+    return;
   case SEQUENCE: {
     value_t temp;
     foreach (const value_t& value, as_sequence())
       temp.push_back(value.unrounded());
-    return temp;
+    *this = temp;
+    return;
   }
   default:
     break;
   }
 
   throw_(value_error, _("Cannot unround %1") << label());
-  return NULL_VALUE;
 }
 
 void value_t::annotate(const annotation_t& details)

src/value.h

@@ -409,9 +409,26 @@ public:
 
   value_t abs() const;
 
-  value_t rounded() const;
-  value_t truncated() const;
-  value_t unrounded() const;
+  value_t rounded() const {
+    value_t temp(*this);
+    temp.in_place_round();
+    return temp;
+  }
+  void in_place_round();
+
+  value_t truncated() const {
+    value_t temp(*this);
+    temp.in_place_truncate();
+    return temp;
+  }
+  void in_place_truncate();
+
+  value_t unrounded() const {
+    value_t temp(*this);
+    temp.in_place_unround();
+    return temp;
+  }
+  void in_place_unround();
 
   value_t reduced() const {
     value_t temp(*this);