Remove unnecessary type casts

src/AstroDates.jl

@@ -10,7 +10,7 @@ using Dates: dayofyear
 const J2000 = 2.4515445e6
 
 function findyear(calendar, j2000day)
-    j2kday = Int64(j2000day)
+    j2kday = ifelse(j2000day isa Int32, widen(j2000day), j2000day)
     if calendar == :proleptic_julian
         return -((-4 * j2kday - 2920488) ÷ 1461)
     elseif calendar == :julian

src/Epochs/accessors.jl

@@ -29,12 +29,12 @@ function DateTime(ep::Epoch)
         end
     end
 
-    sec = ep.second + Int64(43200)
-    time = sec % Int64(86400)
+    sec = ep.second + 43200
+    time = sec % 86400
     if time < 0
-        time += Int64(86400)
+        time += 86400
     end
-    date = Int((sec - time) ÷ Int64(86400))
+    date = (sec - time) ÷ 86400
 
     date_comp = Date(AstroDates.J2000_EPOCH, date)
     time_comp = Time(time, ep.fraction)

src/Epochs/dates.jl

@@ -1,11 +1,9 @@
 function Epoch{S}(date::Date, time::Time{T}, args...) where {S,T}
-    hr = hour(time)
-    mn = minute(time)
-    s = second(Int, time)
-    daysec = Int64((j2000(date) - 0.5) * SECONDS_PER_DAY)
-    hoursec = Int64(hour(time) * SECONDS_PER_HOUR)
-    minutesec = Int64(minute(time) * SECONDS_PER_MINUTE)
-    sec = Int64(s) + minutesec + hoursec + daysec
+    daysec = round(Int64, (j2000(date) - 0.5) * SECONDS_PER_DAY)
+    horsec = round(Int64, hour(time) * SECONDS_PER_HOUR)
+    minsec = round(Int64, minute(time) * SECONDS_PER_MINUTE)
+    sec = daysec + horsec + minsec + second(time)
+
     return Epoch{S}(sec, time.fraction)
 end
 

test/epochs.jl

@@ -79,11 +79,11 @@ end
     @testset "Precision" begin
         ep = TAIEpoch(TAIEpoch(2000, 1, 1, 12), 2eps())
         @test ep.second == 0
-        @test ep.fraction ≈ 2eps()
+        @test ep.fraction == 2eps()
 
         ep += 10000centuries
         @test ep.second == value(seconds(10000centuries))
-        @test ep.fraction ≈ 2eps()
+        @test ep.fraction == 2eps()
 
         # Issue 44
         elong1 = 0.0