[#BloombergLP-bbldc-BasicDayCount]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bbldc.adoc[bbldc]::BasicDayCount
:relfileprefix: ../../
:mrdocs:

This `class` provides a protocol for determining values based on dates according to derived implementations of specific day‐count conventions.

== Synopsis

Declared in `<bbldc_basicdaycount.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class BasicDayCount;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bbldc/BasicDayCount/2destructor.adoc[`~BasicDayCount`] [.small]#[destructor]# [.small]#[virtual]#
| Destroy this object.
| xref:BloombergLP/bbldc/BasicDayCount/daysDiff.adoc[`daysDiff`]  [.small]#[virtual]#
| Return the (signed) number of days between two dates.
| xref:BloombergLP/bbldc/BasicDayCount/yearsDiff.adoc[`yearsDiff`]  [.small]#[virtual]#
| Return the (signed fractional) number of years between two dates.
|===


== Derived Classes

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bbldc/BasicBasicDayCountAdapter.adoc[`BasicBasicDayCountAdapter`] 
| This `class` provides an adapter from `CONVENTION` to `bbldc::BasicDayCount`.
| xref:BloombergLP/bbldc/TerminatedBasicDayCountAdapter.adoc[`TerminatedBasicDayCountAdapter`] 
| This `class` provides an adapter from `CONVENTION` to `bbldc::BasicDayCount`.
|===


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