Updated the Doxygen docs so that all the core numerics files are in the same

module group.

doc/Doxyfile

@@ -523,7 +523,7 @@ WARN_LOGFILE           =
 # directories like "/usr/src/myproject". Separate the files or directories 
 # with spaces.
 
-INPUT                  = %srcdir%/src
+INPUT                  = %srcdir%/src %srcdir%/test/unit
 
 # This tag can be used to specify the character encoding of the source files 
 # that doxygen parses. Internally doxygen uses the UTF-8 encoding, which is 

src/amount.h

@@ -29,6 +29,10 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+/**
+ * @defgroup numerics Core numerics
+ */
+
 /**
  * @file   amount.h
  * @author John Wiegley
@@ -36,6 +40,8 @@
  *
  * @brief  Basic type for handling commoditized math: amount_t.
  *
+ * @ingroup numerics
+ *
  * This file contains the most basic numerical type in Ledger:
  * amount_t, which relies upon commodity.h (commodity_t) for handling
  * commoditized amounts.  This class allows Ledger to handle

src/balance.h

@@ -29,6 +29,10 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+/**
+ * @defgroup numerics Core numerics
+ */
+
 /**
  * @file   balance.h
  * @author John Wiegley
@@ -36,6 +40,8 @@
  *
  * @brief  Basic type for adding multiple commodities together.
  *
+ * @ingroup numerics
+ *
  * Unlike the amount_t class, which throws an exception if amounts of
  * differing commodities are added or subtracted, the balance_t class
  * is designed to allow this, tracking the amounts of each component

src/balpair.h

@@ -29,6 +29,10 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+/**
+ * @defgroup numerics Core numerics
+ */
+
 /**
  * @file   balpair.h
  * @author John Wiegley
@@ -36,6 +40,8 @@
  *
  * @brief  Provides an abstraction around balance_t for tracking costs.
  *
+ * @ingroup numerics
+ *
  * When a transaction's amount is added to a balance, only the "value"
  * of the amount is added -- not the associated cost of the
  * transaction.  To provide for this, the balance_pair_t type allows

src/commodity.h

@@ -29,6 +29,10 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+/**
+ * @defgroup numerics Core numerics
+ */
+
 /**
  * @file   commodity.h
  * @author John Wiegley
@@ -36,6 +40,8 @@
  *
  * @brief  Types for handling commodities.
  *
+ * @ingroup numerics
+ *
  * This file contains one of the most basic types in Ledger:
  * commodity_t, and its annotated cousin, annotated_commodity_t.
  */

src/value.h

@@ -29,6 +29,10 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+/**
+ * @defgroup numerics Core numerics
+ */
+
 /**
  * @file   value.h
  * @author John Wiegley
@@ -36,6 +40,8 @@
  *
  * @brief  Abstract dynamic type representing various numeric types.
  *
+ * @ingroup numerics
+ *
  * A value_t object can be one of many types, and changes its type
  * dynamically based on how it is used.  For example, if you assign
  * the number 10 to a value object, it's internal type will be