Document new tests

doc/latex/biblatex/biblatex.tex

@@ -9184,6 +9184,23 @@ \subsubsection{Stand-alone Tests}
 
 As \cmd{ifend$<$datetype$>$dateuncertain} but for use in \cmd{mkbibdate*} formatting commands (\secref{aut:fmt:lng}) inside which the appropriate \cmd{ifend$<$datetype$>$dateuncertain} command is aliased to this command.
 
+\cmditem{iflabeldateisdate}{true}{false}
+
+Expands to \prm{true} if labeldate is defined and was obtained from date, and to \prm{false} otherwise.
+
+\cmditem{ifdatehasyearonlyprecision}{datetype}{true}{false}
+
+Expands to \prm{true} if the \prm{datetype}date is defined and would be shown with year precision \cmd{print$<$datetype$>$date}, and to false otherwise.
+
+\cmditem{ifdatehastime}{datetype}{true}{false}
+
+Expands to \prm{true} if the \prm{datetype}date is defined, has a time component and \opt{$<$datetype$>$dateusetime} is true, and to false otherwise.
+
+\cmditem{ifdateshavedifferentprecision}{datetype1}{datetype2}{true}{false}
+
+Expands to \prm{true} if the two dates \prm{datetype1} and \prm{datetype2} would show in different precision when printed with \cmd{print$<$datetype1$>$date} and \cmd{print$<$datetype2$>$date} respectively, and to \prm{false} otherwise.
+
+
 \cmditem{ifcaselang}[language]{true}{false}
 
 Expands to \prm{true} if the the optional \prm{language} is one of those

tex/latex/biblatex/biblatex.sty

@@ -3356,17 +3356,17 @@
     and
     (test {\iffieldequalstr{labeldatesource}{}}
      or test {\iffieldequalstr{labeldatesource}{year}})}}
-     
+
 \def\blx@imc@ifdatehasyearonlyprecision#1{%
   \ifboolexpr{not test {\iffieldundef{#1year}}
               and (test {\ifcsstring{blx@dateformat@#1date}{year}}
                    or (test {\iffieldundef{#1month}}
                        and test {\iffieldundef{#1season}}))}}
-                       
+
 \def\blx@imc@ifdatehastime#1{%
   \ifboolexpr{togl {blx@#1dateusetime}
                  and not test {\iffieldundef{#1hour}}}}
-                 
+
 \def\blx@imc@ifdateshavedifferentprecision#1#2{%
   \ifboolexpr{   (test {\ifdatehasyearonlyprecision{#1}}
                   and not test {\ifdatehasyearonlyprecision{#2}})