From 227bb0a3ce364ac616b01edf094ad243a7077c40 Mon Sep 17 00:00:00 2001
From: Tobie Morgan Hitchcock <tobie@abcum.com>
Date: Wed, 19 Oct 2022 11:06:17 +0100
Subject: [PATCH] =?UTF-8?q?Ensure=20database=20doesn=E2=80=99t=20panic=20w?=
 =?UTF-8?q?hen=20rounding=20decimal=20values=20with=20more=20than=2016=20d?=
 =?UTF-8?q?ecimal=20places?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

Closes #1378
---
 lib/src/sql/number.rs | 27 ++++++++++++++++++++++++---
 1 file changed, 24 insertions(+), 3 deletions(-)

diff --git a/lib/src/sql/number.rs b/lib/src/sql/number.rs
index 736a2c7d..5af6c8ec 100644
--- a/lib/src/sql/number.rs
+++ b/lib/src/sql/number.rs
@@ -285,7 +285,14 @@ impl Number {
 		match self {
 			Number::Int(v) => v.into(),
 			Number::Float(v) => v.ceil().into(),
-			Number::Decimal(v) => (v + BigDecimal::from_f32(0.5).unwrap()).round(0).into(),
+			Number::Decimal(v) => {
+				if v.digits() > 16 {
+					let v = (v.to_f64().unwrap_or_default() + 0.5).round();
+					BigDecimal::from_f64(v).unwrap_or_default().into()
+				} else {
+					(v + BigDecimal::from_f32(0.5).unwrap()).round(0).into()
+				}
+			}
 		}
 	}
 
@@ -293,7 +300,14 @@ impl Number {
 		match self {
 			Number::Int(v) => v.into(),
 			Number::Float(v) => v.floor().into(),
-			Number::Decimal(v) => (v - BigDecimal::from_f32(0.5).unwrap()).round(0).into(),
+			Number::Decimal(v) => {
+				if v.digits() > 16 {
+					let v = (v.to_f64().unwrap_or_default() - 0.5).round();
+					BigDecimal::from_f64(v).unwrap_or_default().into()
+				} else {
+					(v - BigDecimal::from_f32(0.5).unwrap()).round(0).into()
+				}
+			}
 		}
 	}
 
@@ -301,7 +315,14 @@ impl Number {
 		match self {
 			Number::Int(v) => v.into(),
 			Number::Float(v) => v.round().into(),
-			Number::Decimal(v) => v.round(0).into(),
+			Number::Decimal(v) => {
+				if v.digits() > 16 {
+					let v = v.to_f64().unwrap_or_default().round();
+					BigDecimal::from_f64(v).unwrap_or_default().into()
+				} else {
+					v.round(0).into()
+				}
+			}
 		}
 	}