Create an unrounded global amount variable 'one' for creating inverse price

mappings.

2 files changed, 11 insertions, 3 deletions

diff --git a/src/amount.cc b/src/amount.cc
index 5958962d..32dbf856 100644
--- a/src/amount.cc
+++ b/src/amount.cc
@@ -115,11 +115,15 @@ uint_fast32_t amount_t::sizeof_bigint_t()
   return sizeof(bigint_t);
 }
 
+amount_t * one = NULL;
+
 void amount_t::initialize()
 {
   mpz_init(temp);
   mpz_init(divisor);
 
+  one = new amount_t(amount_t(1L).unround());
+
   if (! current_pool)
     current_pool = new commodity_pool_t;
 
@@ -140,6 +144,8 @@ void amount_t::shutdown()
   mpz_clear(temp);
   mpz_clear(divisor);
 
+  delete one;
+
   if (current_pool) {
     checked_delete(current_pool);
     current_pool = NULL;
@@ -661,9 +667,9 @@ optional<amount_t> amount_t::value(const optional<datetime_t>& moment) const
 {
   if (quantity) {
     // jww (2008-09-21): 'none' is not the right argument here.
-    optional<amount_t> amt(commodity().find_price(none, moment));
-    if (amt)
-      return (*amt * number()).round();
+    optional<price_point_t> point(commodity().find_price(none, moment));
+    if (point)
+      return (point->price * number()).round();
   } else {
     throw_(amount_error, "Cannot determine value of an uninitialized amount");
   }
diff --git a/src/amount.h b/src/amount.h
index 0a9038f2..0667d9c3 100644
--- a/src/amount.h
+++ b/src/amount.h
@@ -722,6 +722,8 @@ public:
   bool valid() const;
 };
 
+extern amount_t * one;
+
 inline amount_t amount_t::exact(const string& value) {
   amount_t temp;
   temp.parse(value, AMOUNT_PARSE_NO_MIGRATE);