From 371deae98f85f26171b6da6041b6404720c5dcf1 Mon Sep 17 00:00:00 2001
From: Nathan Byrd <techy1@gmail.com>
Date: Fri, 5 Mar 2021 17:23:12 -0600
Subject: [PATCH 1/2] Corrected fidelity of datetime.fromtimestamp()

---
 adafruit_datetime.py | 18 ++++++++++--------
 1 file changed, 10 insertions(+), 8 deletions(-)

diff --git a/adafruit_datetime.py b/adafruit_datetime.py
index b430f40..7d85b74 100755
--- a/adafruit_datetime.py
+++ b/adafruit_datetime.py
@@ -1284,16 +1284,18 @@ def _fromtimestamp(cls, t, utc, tz):
         A timezone info object may be passed in as well.
         """
         if isinstance(t, float):
-            frac, t = _math.modf(t)
+            frac = t - int(t)
+            t = int(t)
+            us = round(frac * 1e6)
+            if us >= 1000000:
+                t += 1
+                us -= 1000000
+            elif us < 0:
+                t -= 1
+                us += 1000000
         else:
             frac = 0
-        us = round(frac * 1e6)
-        if us >= 1000000:
-            t += 1
-            us -= 1000000
-        elif us < 0:
-            t -= 1
-            us += 1000000
+            us = 0
 
         if utc:
             raise NotImplementedError(

From d1f502ffd563d1bd43f2ca8ddadd00ee8f923c0a Mon Sep 17 00:00:00 2001
From: Nathan Byrd <techy1@gmail.com>
Date: Wed, 10 Mar 2021 19:26:34 -0600
Subject: [PATCH 2/2] Updated per code review comments

---
 adafruit_datetime.py | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/adafruit_datetime.py b/adafruit_datetime.py
index 7d85b74..cb4fef9 100755
--- a/adafruit_datetime.py
+++ b/adafruit_datetime.py
@@ -1284,8 +1284,7 @@ def _fromtimestamp(cls, t, utc, tz):
         A timezone info object may be passed in as well.
         """
         if isinstance(t, float):
-            frac = t - int(t)
-            t = int(t)
+            frac, t = _math.modf(t)
             us = round(frac * 1e6)
             if us >= 1000000:
                 t += 1
@@ -1294,7 +1293,6 @@ def _fromtimestamp(cls, t, utc, tz):
                 t -= 1
                 us += 1000000
         else:
-            frac = 0
             us = 0
 
         if utc: