From 7803955cae3dffb37c315e95764df8e949eea590 Mon Sep 17 00:00:00 2001
From: mbartlett21 <29034492+mbartlett21@users.noreply.github.com>
Date: Mon, 14 Jun 2021 12:17:53 +0000
Subject: [PATCH] Use `try_from_secs_*` in `Duration::from_secs_*` functions.

`Duration::from_secs_{f32, f64}` now use the results from the
non-panicking functions and unwrap it.
---
 library/core/src/time.rs | 36 ++++++------------------------------
 1 file changed, 6 insertions(+), 30 deletions(-)

diff --git a/library/core/src/time.rs b/library/core/src/time.rs
index 22e8e143986..cc37000bb14 100644
--- a/library/core/src/time.rs
+++ b/library/core/src/time.rs
@@ -679,21 +679,9 @@ impl Duration {
     #[inline]
     #[rustc_const_unstable(feature = "duration_consts_2", issue = "72440")]
     pub const fn from_secs_f64(secs: f64) -> Duration {
-        const MAX_NANOS_F64: f64 = ((u64::MAX as u128 + 1) * (NANOS_PER_SEC as u128)) as f64;
-        let nanos = secs * (NANOS_PER_SEC as f64);
-        if !nanos.is_finite() {
-            panic!("got non-finite value when converting float to duration");
-        }
-        if nanos >= MAX_NANOS_F64 {
-            panic!("overflow when converting float to duration");
-        }
-        if nanos < 0.0 {
-            panic!("underflow when converting float to duration");
-        }
-        let nanos = nanos as u128;
-        Duration {
-            secs: (nanos / (NANOS_PER_SEC as u128)) as u64,
-            nanos: (nanos % (NANOS_PER_SEC as u128)) as u32,
+        match Duration::try_from_secs_f64(secs) {
+            Ok(v) => v,
+            Err(e) => crate::panicking::panic(e.description()),
         }
     }
 
@@ -752,21 +740,9 @@ impl Duration {
     #[inline]
     #[rustc_const_unstable(feature = "duration_consts_2", issue = "72440")]
     pub const fn from_secs_f32(secs: f32) -> Duration {
-        const MAX_NANOS_F32: f32 = ((u64::MAX as u128 + 1) * (NANOS_PER_SEC as u128)) as f32;
-        let nanos = secs * (NANOS_PER_SEC as f32);
-        if !nanos.is_finite() {
-            panic!("got non-finite value when converting float to duration");
-        }
-        if nanos >= MAX_NANOS_F32 {
-            panic!("overflow when converting float to duration");
-        }
-        if nanos < 0.0 {
-            panic!("underflow when converting float to duration");
-        }
-        let nanos = nanos as u128;
-        Duration {
-            secs: (nanos / (NANOS_PER_SEC as u128)) as u64,
-            nanos: (nanos % (NANOS_PER_SEC as u128)) as u32,
+        match Duration::try_from_secs_f32(secs) {
+            Ok(v) => v,
+            Err(e) => crate::panicking::panic(e.description()),
         }
     }