From 0598a6d315ecadc5dd58cd8f5dde7c603c3f493c Mon Sep 17 00:00:00 2001
From: Karen Arutyunov <karen@codesynthesis.com>
Date: Mon, 30 Mar 2020 20:47:38 +0300
Subject: Add daytime() function

---
 libbutl/timestamp.mxx | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'libbutl/timestamp.mxx')

diff --git a/libbutl/timestamp.mxx b/libbutl/timestamp.mxx
index f4a06f9..9525ec0 100644
--- a/libbutl/timestamp.mxx
+++ b/libbutl/timestamp.mxx
@@ -194,4 +194,14 @@ LIBBUTL_MODEXPORT namespace butl
                const char* format,
                bool local,
                const char** end = nullptr);
+
+  // Rebase a time point from UNIX epoch to midnight in the local time zone
+  // (so the returned duration is always less than 24 hours).
+  //
+  // Specifically, convert the time point from Epoch to the local time and
+  // return the time elapsed since midnight. Throw std::system_error on
+  // underlying time conversion function failures.
+  //
+  LIBBUTL_SYMEXPORT duration
+  daytime (timestamp);
 }
-- 
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